Exterior Lighting - Headlamps

Mondeo 2007.5 (02/2007-)

Print

Diagnosis and Testing

Refer to Wiring Diagrams Section 417-01, for schematic and connector information.

Special Tool(s)

General Equipment

Inspection and Verification

NOTE: The generic electronic module (GEM) is part of the central junction box (CJB).
NOTE: If a new GEM module is being installed, the new module must be configured following installation. For this purpose, the vehicle-specific data is
read out of the module to be changed using the diagnostic equipment and is transferred to the new module.
NOTE: Before reading out the vehicle-specific data make sure that all electrical connections in the vehicle are reconnected so that the module and the
diagnostic unit can communicate correctly.
NOTE: Ensure correct engagement of the wiring harness connectors.

1.

1. Verify the customer concern.

2.

2. Visually inspect for obvious signs of mechanical or electrical damage.

Visual Inspection Chart

3.

3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step. TEST the

system for normal operation

4.

4. If the concern persists after the visual inspection, PERFORM a fault diagnosis with the diagnostic unit and RECTIFY any displayed faults in

accordance with the displayed fault description. TEST the system for normal operation

5.

5. For vehicles with no stored fault(s), PROCEED in accordance with the symptom chart according to the fault symptom.

6.

6. After testing or rectifying the fault and after completion of operations, READ OUT the fault memories of all vehicle modules and DELETE any stored

faults. READ OUT all fault memories again after a road test.

Diagnostic Trouble Code (DTC) Table - Generic Electronic Module (GEM)

Terminal Probe Kit

29-011A

Digital Multimeter.

Diagnostic tool.

Electrical



Fuse(s)



Bulb(s).



Headlamp.



Electrical connectors.



Switch.



Vehicle wiring harness.

DTC

Description

Action

B1D06-13

Circuit of left-hand turn signal lamps faulty.

REFER to:

Turn Signal, Cornering and Hazard Lamps

(417-01 Exterior Lighting,

Diagnosis and Testing).

B1D06-11

Circuit of left-hand turn signal lamps faulty (short to ground).

REFER to:

Turn Signal, Cornering and Hazard Lamps

(417-01 Exterior Lighting,

Diagnosis and Testing).

B11D3-11

Circuit of left-hand side turn signal lamp faulty (short to
ground).

REFER to:

Turn Signal, Cornering and Hazard Lamps

(417-01 Exterior Lighting,

Diagnosis and Testing).

B11D3-13

Circuit of left-hand side turn signal lamp faulty (open circuit).

REFER to:

Turn Signal, Cornering and Hazard Lamps

(417-01 Exterior Lighting,

Diagnosis and Testing).

B1D07-11

Circuit of right-hand turn signal lamps faulty (short to ground).

REFER to:

Turn Signal, Cornering and Hazard Lamps

(417-01 Exterior Lighting,

Diagnosis and Testing).

B1D07-13

Circuit of right-hand turn signal lamps faulty.

REFER to:

Turn Signal, Cornering and Hazard Lamps

(417-01 Exterior Lighting,

Diagnosis and Testing).

B11CB-11

Circuit of right-hand side turn signal lamp faulty (short to
ground).

REFER to:

Turn Signal, Cornering and Hazard Lamps

(417-01 Exterior Lighting,

Diagnosis and Testing).

B11CB-13

Circuit of right-hand side turn signal lamp faulty (open circuit).

REFER to:

Turn Signal, Cornering and Hazard Lamps

(417-01 Exterior Lighting,

Diagnosis and Testing).

B113C-11

Circuit of hazard warning switch illumination faulty (short to
ground).

REFER to:

Turn Signal, Cornering and Hazard Lamps

(417-01 Exterior Lighting,

Diagnosis and Testing).

B113C-15

Circuit of hazard warning switch illumination faulty (short to
voltage or open circuit).

REFER to:

Turn Signal, Cornering and Hazard Lamps

(417-01 Exterior Lighting,

Diagnosis and Testing).

B1D35-24

Circuit of hazard warning switch faulty.

REFER to:

Turn Signal, Cornering and Hazard Lamps

(417-01 Exterior Lighting,

Diagnosis and Testing).

B1130-07

Light switch unit, component fault.

REFER TO: Symptom chart.

B1D00-11

Circuit of left-hand headlamp faulty (short to ground).

REFER TO: Symptom chart.

B1D01-11

Circuit of right-hand headlamp faulty (short to ground).

REFER TO: Symptom chart.

B1D00-13

Circuit of left-hand headlamp faulty (open circuit).

REFER TO: Symptom chart.

B1D01-13

Circuit of right-hand headlamp faulty (open circuit).

REFER TO: Symptom chart.

B1098-11

Circuit of left-hand marker lamp (parking lamp) faulty (short to
ground).

REFER to:

Parking, Rear and License Plate Lamps

(417-01 Exterior Lighting,

Diagnosis and Testing).

B1098-13

Circuit of left-hand marker lamp (parking lamp) faulty (open
circuit).

REFER to:

Parking, Rear and License Plate Lamps

(417-01 Exterior Lighting,

Diagnosis and Testing).

B1099-11

Circuit of right-hand marker lamp (parking lamp) faulty (short to
ground).

REFER to:

Parking, Rear and License Plate Lamps

(417-01 Exterior Lighting,

Diagnosis and Testing).

B1099-13

Circuit of right-hand marker lamp (parking lamp) faulty (open
circuit).

REFER to:

Parking, Rear and License Plate Lamps

(417-01 Exterior Lighting,

Diagnosis and Testing).

B109B-13

Circuit of license plate lamps faulty.

REFER to:

Parking, Rear and License Plate Lamps

(417-01 Exterior Lighting,

Diagnosis and Testing).

B109B-11

Circuit of license plate lamps faulty (short to ground).

REFER to:

Parking, Rear and License Plate Lamps

(417-01 Exterior Lighting,

Diagnosis and Testing).

B1A79-13

Circuit of rear fog lamps faulty.

REFER to:

Fog Lamps

(417-01 Exterior Lighting, Diagnosis and Testing).

B1A79-11

Circuit of rear fog lamps faulty (short to ground).

REFER to:

Fog Lamps

(417-01 Exterior Lighting, Diagnosis and Testing).

C0023-11.

C0023-13

Stop lamp circuit faulty.

REFER to:

Stoplamps

(417-01 Exterior Lighting, Diagnosis and Testing).

B1115-11

Circuit of high-mounted stop lamp faulty (short to ground).

REFER to:

Stoplamps

(417-01 Exterior Lighting, Diagnosis and Testing).

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Diagnostic Trouble Code (DTC) Table - Lighting Control Module

Symptom Chart

B1115-13

Circuit of high-mounted stop lamp faulty (open circuit).

REFER to:

Stoplamps

(417-01 Exterior Lighting, Diagnosis and Testing).

B10AD-09

Rain sensor/light sensor, component fault.

REFER to:

Autolamps

(417-01 Exterior Lighting, Diagnosis and Testing),

Wipers and Washers

(501-16 Wipers and Washers, Diagnosis and

Testing).

B10AD-04

Internal circuit of rain sensor/light sensor faulty.

REFER to:

Autolamps

(417-01 Exterior Lighting, Diagnosis and Testing),

Wipers and Washers

(501-16 Wipers and Washers, Diagnosis and

Testing).

DTC

Description

Action

B1041-

54

Headlamp range control, faulty configuration

RE-CALIBRATE the lighting control module with the diagnostic unit. TEST the system for
normal operation

B1041-

55

Headlamp range control, internal fault

CLEAR the fault memory. If the fault occurs again after a functional test, RENEW the
adaptive front lighting module.

B10AE-

11

Motor - headlamp range control, short to ground

REFER to:

Headlamp Leveling

(417-01 Exterior Lighting, Diagnosis and Testing).

B10AE-

12

Motor - headlamp range control, short to voltage supply

REFER to:

Headlamp Leveling

(417-01 Exterior Lighting, Diagnosis and Testing).

B10AE-

64

Signal from headlamp range control motor faulty

REFER to:

Headlamp Leveling

(417-01 Exterior Lighting, Diagnosis and Testing).

B11A2-

11

Circuit of headlamp switch faulty (short to ground or open
circuit).

REFER TO: Symptom chart.

B11A2-

12

Circuit of headlamp switch faulty (short to voltage).

REFER TO: Symptom chart.

B1A57-

01

Left headlamp, headlamp range control motor

REFER to:

Headlamp Leveling

(417-01 Exterior Lighting, Diagnosis and Testing).

B1A57-

87

Left headlamp, headlamp range control motor

REFER to:

Headlamp Leveling

(417-01 Exterior Lighting, Diagnosis and Testing).

B1A58-

01

Right headlamp, headlamp range control motor

REFER to:

Headlamp Leveling

(417-01 Exterior Lighting, Diagnosis and Testing).

B1A58-

87

Right headlamp, headlamp range control motor

REFER to:

Headlamp Leveling

(417-01 Exterior Lighting, Diagnosis and Testing).

B1A59-

11

Power supply of angle of inclination sensor, short to ground

REFER to:

Headlamp Leveling

(417-01 Exterior Lighting, Diagnosis and Testing).

B1A59-

12

Power supply of angle of inclination sensor, short to voltage
supply

REFER to:

Headlamp Leveling

(417-01 Exterior Lighting, Diagnosis and Testing).

B1A98-

83

LIN BUS

REFER to:

Communications Network

(418-00 Module Communications Network, Diagnosis

and Testing).

B1A98-

86

LIN BUS

REFER to:

Communications Network

(418-00 Module Communications Network, Diagnosis

and Testing).

B1A98-

88

Circuit of LIN bus faulty

REFER to:

Communications Network

(418-00 Module Communications Network, Diagnosis

and Testing).

B1C98-

11

Circuit of left cornering light, short to ground

REFER TO: Symptom chart.

B1C98-

13

Circuit of left cornering light, open circuit

REFER TO: Symptom chart.

B1C99-

11

Circuit of right cornering light, short to ground

REFER TO: Symptom chart.

B1C99-

13

Circuit of right cornering light, open circuit

REFER TO: Symptom chart.

B1D64-

01

Status of adaptive front lighting servo motor faulty

RENEW left-hand headlamp.

B1D64-

87

No communication possible with left-hand adaptive front
lighting servo motor

REFER to:

Communications Network

(418-00 Module Communications Network, Diagnosis

and Testing). RENEW left-hand headlamp.

B1D65-

01

Status of adaptive front lighting servo motor faulty

RENEW right-hand headlamp.

B1D65-

87

No communication possible with right-hand adaptive front
lighting servo motor

REFER to:

Communications Network

(418-00 Module Communications Network, Diagnosis

and Testing). RENEW right-hand headlamp.

U0001-

88

No communications possible via the HS CAN bus

REFER to:

Communications Network

(418-00 Module Communications Network, Diagnosis

and Testing).

U0122-

00

No communication possible with the integrated vehicle
dynamics control (IVDC) module

CHECK the integrated vehicle dynamics control (IVDC) module.
REFER to:

Communications Network

(418-00 Module Communications Network, Diagnosis

and Testing).

U0126-

00

No communication possible with the steering angle sensor
module

CHECK the steering wheel angle sensor (SAS).
REFER to:

Communications Network

(418-00 Module Communications Network, Diagnosis

and Testing).

U0140-

00

No communication possible with the central junction box
(CJB)

CHECK the CJB.
REFER to:

Communications Network

(418-00 Module Communications Network, Diagnosis

and Testing).

U2100-

00

Incomplete vehicle configuration parameters

REFER to:

Communications Network

(418-00 Module Communications Network, Diagnosis

and Testing).

U2101-

00

Vehicle configuration parameters faulty

CHECK the vehicle configuration parameters.
REFER to:

Communications Network

(418-00 Module Communications Network, Diagnosis

and Testing).

U3003-

16

Battery voltage too low, voltage less than 10.5 volts

CHECK the battery and charging system.

U3003-

17

Battery voltage too high, voltage more than 16 volts

CHECK the battery and charging system.

U3003-

62

Power supply to CJB too low.

CHECK the battery and charging system.

Symptom

Possible Sources

Action

Dipped beam and main beam are inoperative.

Fuse(s)
Circuit(s).
GEM
Engine junction box (EJB).

*
*
*
*

GO to Pinpoint Test

A.

*

Daytime running lights (DRL) inoperative.

Fuse(s)
Circuit(s).
Lighting control module.
GEM

*
*
*
*

GO to Pinpoint Test

E.

*

The low beams are inoperative (both sides).

GEM

*

CHECK the GEM with the diagnostic unit and if necessary RENEW.

*

The high beams are inoperative (both sides).

Circuit(s).
Steering wheel module.
High beam headlamp switch.

*
*
*

GO to Pinpoint Test

B.

*

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Pinpoint Tests

NOTE: Use a digital multimeter for all electrical measurements.

CJB
GEM

*
*

One low beam headlamp is inoperative.

Fuse.
Circuit(s).
Conventional headlamp.
Gas discharge headlamps.
GEM

*
*
*
*
*

GO to Pinpoint Test

C.

*

One high beam headlamp is inoperative.

Fuse.
Circuit(s).
Conventional headlamp.
Gas discharge headlamps.
GEM

*
*
*
*
*

GO to Pinpoint Test

D.

*

The headlamps are on continuously.

Circuit(s).
Lighting control module.
Steering wheel module.
High beam headlamp switch.
Conventional headlamp.
Gas discharge headlamps.
GEM

*
*
*
*
*
*
*

GO to Pinpoint Test

E.

*

Headlamp flasher inoperative (high beam OK).

Circuit(s).
Steering wheel module.
High beam headlamp switch.

*
*
*

GO to Pinpoint Test

F.

*

Adaptive front lighting inoperative.

Circuit(s).
Adaptive front lighting module.
Steering angle sensor.

*
*
*

GO to Pinpoint Test

G.

*

Automatic headlamps inoperative.

Circuit(s).
Steering wheel module.
Rain sensor.

*
*
*

REFER to:

Autolamps

(417-01 Exterior Lighting, Diagnosis and Testing).

*

Cornering lights inoperative or permanently on.

Circuit(s).
Steering wheel module.
Steering angle sensor.

*
*
*

GO to Pinpoint Test

H.

*

PINPOINT TEST A : DIPPED BEAM AND MAIN BEAM INOPERATIVE

TEST CONDITIONS

DETAILS/RESULTS/ACTIONS

A1: CHECK FUSE F17 (60 A) (EJB)

Ignition switch in position 0.

1

Disconnect fuse F17 (60 A) (EJB).

2

CHECK fuse F17 (60 A) (EJB).

3

Is the fuse OK.?
Yes

GO to A2

.

No

RENEW fuse F17 (60 A) (EJB). TEST the system for normal operation If the fuse blows again, LOCATE and RECTIFY
short using the Wiring Diagrams. TEST the system for normal operation

A2: CHECK THE VOLTAGE AT FUSE F17 (60 A) (EJB)

Connect fuse F17 (60 A) (EJB).

1

Ignition switch in position II.

2

Measure the voltage between fuse F17 (60A) (EJB) and ground.

3

Does meter display battery voltage?
Yes

GO to A3

.

No

LOCATE AND RECTIFY the break in the voltage supply of fuse F17 (60 A) (EJB) using the Wiring Diagrams. TEST the
system for normal operation

A3: CHECK FUSE F18 (60 A) (EJB)

Ignition switch in position 0.

1

Disconnect fuse F18 (60 A) (EJB).

2

CHECK fuse F18 (60 A) (EJB).

3

Is the fuse OK.?
Yes

GO to A4

.

No

RENEW fuse F18 (60 A) (EJB). TEST the system for normal operation If the fuse blows again, LOCATE and RECTIFY
short using the Wiring Diagrams. TEST the system for normal operation

A4: CHECK THE VOLTAGE AT FUSE F18 (60 A) (EJB)

Connect fuse F18 (60 A) (EJB).

1

Ignition switch in position II.

2

Measure the voltage between fuse F18 (60 A) (EJB) and ground.

3

Does meter display battery voltage?
Yes

GO to A5

.

No

LOCATE AND RECTIFY the break in the voltage supply of fuse F18 (60 A) (EJB) using the Wiring Diagrams. TEST the
system for normal operation

A5: CHECK THE POWER SUPPLY TO THE GEM FOR OPEN CIRCUIT

Ignition switch in position 0.

1

Disconnect GEM from connector C1BP02-G.

2

Ignition switch in position II.

3

Measure the voltage between the GEM, connector C1BP02-G, pin 1, circuit SBB17A (RD), wiring harness side and
ground.

4

Does the meter display battery voltage?
Yes

GO to A6

.

No

LOCATE and RECTIFY the break in the circuit SBB17A (RD) between the GEM and fuse F17 (60 A) (EJB) with the aid of

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the wiring diagrams. TEST the system for normal operation

A6: CHECK THE GROUND CONNECTION OF THE GEM FOR OPEN CIRCUIT

Ignition switch in position 0.

1

Disconnect GEM from connector C1BP02-A.

2

Measure the resistance between the GEM, connector C1BP02-A, pin 54, circuit GD123F (BK/GY), wiring harness side
and ground.

3

Is a resistance of less than 2 Ohms registered?
Yes

GO to A7

.

No

LOCATE and RECTIFY the break in the circuits between the GEM and ground connection G1D132B with the aid of the
Wiring Diagrams. TEST the system for normal operation

A7: CHECK THE GROUND CONNECTION OF THE GEM FOR OPEN CIRCUIT

Ignition switch in position 0.

1

Disconnect GEM from connector C1BP02-B.

2

Measure the resistance between the GEM, connector C1BP02-B, pin 65:



LHD: circuit GD140J (BK/GN), wiring harness side and ground.



RHD: circuit GD134U (BK/VT), wiring harness side and ground.

3

Is a resistance of less than 2 Ohms registered?
Yes

INSTALL a new GEM. TEST the system for normal operation

No

- LHD: LOCATE and RECTIFY the break in the circuits between the GEM and ground connection G3D138 with the aid of
the Wiring Diagrams. TEST the system for normal operation
- RHD: LOCATE and RECTIFY the break in the circuits between the GEM and ground connection G3D133 with the aid of
the Wiring Diagrams. TEST the system for normal operation

PINPOINT TEST B : THE HIGH BEAMS ARE INOPERATIVE

TEST CONDITIONS

DETAILS/RESULTS/ACTIONS

B1: DETERMINE THE FAULT CONDITION

Ignition switch in position II.

1

CHECK the high beam headlamps after every step.

2

OPERATE headlamp flasher.

3

SWITCH ON main beam.

4

Do the high beam headlamps only work in one switch position?
Yes

GO to B8

.

No

GO to B2

.

B2: CHECK FUSE F9 (15 A) (CJB).

Ignition switch in position 0.

1

Disconnect Fuse F9 (15 A) (CJB).

2

CHECK Fuse F9 (15 A) (CJB).

3

Is the fuse OK.?
Yes

GO to B3

.

No

RENEW fuse F9 (15 A) (CJB). TEST the system for normal operation If the fuse blows again, LOCATE and RECTIFY short
using the Wiring Diagrams. TEST the system for normal operation

B3: CHECK THE VOLTAGE SUPPLY TO FUSE F9 (15 A) (CJB) FOR OPEN CIRCUIT

Connect Fuse F9 (15 A) (CJB).

1

Ignition switch in position II.

2

Measure the voltage between fuse F9 (15 A) (CJB) and ground.

3

Does the meter display battery voltage?
Yes

GO to B4

.

No

LOCATE AND RECTIFY the break in the voltage supply of fuse F9 (15 A) (CJB) using the Wiring Diagrams. TEST the
system for normal operation

B4: CHECK FUSE F7 (7.5 A) (CJB).

Ignition switch in position 0.

1

Disconnect Fuse F7 (7.5 A) (CJB).

2

CHECK Fuse F7 (7.5 A) (CJB).

3

Is the fuse OK.?
Yes

GO to B5

.

No

RENEW fuse F7 (7.5 A) (CJB). TEST the system for normal operation If the fuse blows again, LOCATE and RECTIFY short
using the Wiring Diagrams. TEST the system for normal operation

B5: CHECK THE VOLTAGE SUPPLY TO FUSE F7 (7.5 A) (CJB) FOR OPEN CIRCUIT

Connect Fuse F7 (7.5 A) (CJB).

1

Ignition switch in position II.

2

Measure the voltage between fuse F7 (7.5 A) (CJB) and ground.

3

Does meter display battery voltage?
Yes

GO to B6

.

No

LOCATE AND RECTIFY the break in the voltage supply of fuse F7 (7.5 A) (CJB) using the Wiring Diagrams. TEST the
system for normal operation

B6: CHECK THE VOLTAGE SUPPLY TO THE STEERING WHEEL MODULE FOR OPEN CIRCUIT

Ignition switch in position 0.

1

Disconnect Steering wheel module from connector C2LS41.

2

Measure the resistance between the CJB, connector C1BP02C, pin 70, circuit SBP07A (WH/RD), wiring harness side and
the steering wheel module, connector C2LS41, pin 1, circuit SBP07A (WH/RD), wiring harness side.

3

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Is a resistance of less than 2 Ohms registered?
Yes

GO to B7

.

No

LOCATE AND RECTIFY the break in the circuits between the steering wheel module and fuse F7 (7.5 A) (CJB) using the
Wiring Diagrams. TEST the system for normal operation

B7: CHECK THE GROUND CONNECTION OF THE STEERING WHEEL/STEERING COLUMN MODULE FOR OPEN CIRCUIT

Ignition switch in position 0.

1

Measure the resistance between the steering wheel module, connector C2LS41, pin 14, circuit GD138AY (BK/WH),
wiring harness side and ground.

2

Is a resistance of less than 2 Ohms registered?
Yes

GO to B8

.

No

LOCATE and RECTIFY the break in the circuits between the steering wheel module and ground connection G6D139 with
the aid of the Wiring Diagrams. TEST the system for normal operation

B8: RULE OUT THE HIGH BEAM HEADLAMP SWITCH AS THE CAUSE OF THE FAULT

CHECK the high beam headlamp switch according to the component tests at the end of this subsection:

1

Is the high beam headlamp switch OK? ?
Yes

CHECK the GEM and the steering wheel module using the Digital Multimeter and INSTALL A NEW one if necessary. TEST
the system for normal operation If the concern persists:REFER to:

Communications Network

(418-00 Module

Communications Network, Diagnosis and Testing).

No

RENEW the high beam headlamp switch. TEST the system for normal operation

PINPOINT TEST C : ONE LOW BEAM HEADLAMP IS INOPERATIVE

TEST CONDITIONS

DETAILS/RESULTS/ACTIONS

C1: DETERMINE THE CAUSE OF THE FAULT

Ignition switch in position II.

1

SWITCH ON dipped beam.

2

Is the left-hand low beam inoperative?
Yes

GO to C2

.

No

GO to C6

.

C2: CHECK THE VOLTAGE SUPPLY OF THE LEFT-HAND HEADLAMP FOR OPEN CIRCUIT

Ignition switch in position 0.

1

Disconnect Left-hand headlamp from connector C1LF08.

2

Ignition switch in position II.

3

SWITCH ON dipped beam.

4

Measure the voltage between left-hand headlamp, connector C1LF08, pin 10, circuit CLF04A (BN/BU), wiring harness
side and ground.

5

Does the meter display battery voltage?
Yes

GO to C5

.

No

GO to C3

.

C3: CHECK THE VOLTAGE SUPPLY AT THE LEFT-HAND HEADLAMP FOR OPEN CIRCUIT

Ignition switch in position 0.

1

Disconnect GEM from connector C1BP02-A.

2

Measure the resistance between the left-hand headlamp, connector C1LF08, pin 10, circuit CLF04A (BN/BU), wiring
harness side and the GEM, connector C1BP02-A, pin 76, circuit CLF04A (BN/BU), wiring harness side.

3

Is a resistance of less than 2 Ohms registered?
Yes

GO to C4

.

No

LOCATE AND RECTIFY break in circuit CLF04A (BN/BU) between headlamp and GEM using the Wiring Diagrams. TEST
the system for normal operation

C4: CHECK CIRCUIT BETWEEN GEM AND LEFT-HAND HEADLAMP FOR A SHORT TO GROUND

Measure the resistance between the GEM, connector C1BP02-A, pin 76, circuit CLF04A (BN/BU), wiring harness side
and ground.

1

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Is a resistance of more than 10,000 Ohm measured?
Yes

TEST the GEM and RENEW as necessary. TEST the system for normal operation

No

LOCATE and RECTIFY the short to ground in circuit CLF04A (BN/BU) between the headlamp and the GEM using the
Wiring Diagrams. TEST the system for normal operation

C5: CHECK GROUND SUPPLY OF LEFT-HAND HEADLAMP FOR OPEN CIRCUIT

Ignition switch in position 0.

1

Measure the resistance between the left-hand headlamp, connector C1LF08, pin 7, circuit GD130T (BK/YE), wiring
harness side and ground.

2

Measure the resistance between the left-hand headlamp, connector C1LF08, pin 9, circuit GD130AS (BK/YE), wiring
harness side and ground.

3

Is a resistance of less than 2 Ohm measured in both cases?
Yes

INSTALL A NEW headlamp. TEST the system for normal operation

No

LOCATE and RECTIFY the break in the relevant circuit between the headlamp and soldered connection SP371 using the
wiring diagrams. TEST the system for normal operation

C6: CHECK THE VOLTAGE SUPPLY OF THE RIGHT-HAND HEADLAMP FOR OPEN CIRCUIT

Ignition switch in position 0.

1

Disconnect Right-hand headlamp from connector C1LF09.

2

Ignition switch in position II.

3

SWITCH ON dipped beam.

4

Measure the voltage between the right-hand headlamp, connector C1LF09, pin 10, circuit CLF05A (BU/GN), wiring
harness side and ground.

5

Does the meter display battery voltage?
Yes

GO to C9

.

No

GO to C7

.

C7: CHECK THE VOLTAGE SUPPLY OF THE RIGHT-HAND HEADLAMP FOR OPEN CIRCUIT

Ignition switch in position 0.

1

Disconnect GEM from connector C1BP02-A.

2

Measure the resistance between the right-hand headlamp, connector C1LF09, pin 10, circuit CLF05A (BU/GN), wiring
harness side and the GEM, connector C1BP02-A, pin 75, circuit CLF05A (BU/GN), wiring harness side.

3

Is a resistance of less than 2 Ohms registered?
Yes

GO to C8

.

No

LOCATE and RECTIFY the break in the circuit between the headlamp and the GEM using the Wiring Diagrams. TEST the
system for normal operation

C8: CHECK CIRCUIT BETWEEN GEM AND RIGHT-HAND HEADLAMP FOR A SHORT TO GROUND

Measure the resistance between the GEM, connector C1BP02-A, pin 75, circuit CLF05A (BU/GN), wiring harness side
and ground.

1

Is a resistance of more than 10,000 Ohm measured?
Yes

TEST the GEM and RENEW as necessary. TEST the system for normal operation

No

LOCATE and RECTIFY the short to ground in circuit CLF05A (BU/GN) between the headlamp and the GEM using the
Wiring Diagrams. TEST the system for normal operation

C9: CHECK THE GROUND CONNECTION TO THE RIGHT-HAND HEADLAMP FOR OPEN CIRCUIT

Ignition switch in position 0.

1

Measure the resistance between the right-hand headlamp, connector C1LF09, pin 7, circuit GD132M (BK/VT), wiring
harness side and ground.

2

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Measure the resistance between the right-hand headlamp, connector C1LF09, pin 9, circuit GD132X (BK/VT), wiring
harness side and ground.

3

Is a resistance of less than 2 Ohm measured in both cases?
Yes

INSTALL A NEW headlamp. TEST the system for normal operation

No

LOCATE and RECTIFY the break in the circuit between the headlamp and soldered connection SP380 using the wiring
diagrams. TEST the system for normal operation

PINPOINT TEST D : ONE HIGH BEAM HEADLAMP IS INOPERATIVE

TEST CONDITIONS

DETAILS/RESULTS/ACTIONS

D1: DETERMINE THE CAUSE OF THE FAULT

Ignition switch in position II.

1

SWITCH ON dipped beam.

2

SWITCH ON main beam.

3

Is the left-hand high beam inoperative?
Yes

GO to D2

.

No

GO to D5

.

D2: CHECK THE VOLTAGE SUPPLY OF THE LEFT-HAND HEADLAMP FOR OPEN CIRCUIT

Ignition switch in position 0.

1

Disconnect Left-hand headlamp from connector C1LF08.

2

Ignition switch in position II.

3

SWITCH ON dipped beam.

4

SWITCH ON main beam.

5

Measure the voltage between the left-hand headlamp, connector C1LF08, pin 5, circuit CLF02A (GY/BN), wiring harness
side and ground.

6

Does the meter display battery voltage?
Yes

GO to D4

.

No

GO to D3

.

D3: CHECK THE VOLTAGE SUPPLY AT THE LEFT-HAND HEADLAMP FOR OPEN CIRCUIT

Ignition switch in position 0.

1

Disconnect GEM from connector C1BP02-A.

2

Measure the resistance between the left-hand headlamp, connector C1LF08, pin 5, circuit CLF02A (GY/BN), wiring
harness side and the GEM, connector C1BP02-A, pin 74, circuit CLF02A (GY/BN), wiring harness side.

3

Is a resistance of less than 2 Ohms registered?
Yes

INSTALL a new GEM. TEST the system for normal operation

No

LOCATE AND RECTIFY break in circuit CLF02A (GY/BN) between headlamp and GEM using the Wiring Diagrams. TEST
the system for normal operation

D4: CHECK GROUND SUPPLY OF LEFT-HAND HEADLAMP FOR OPEN CIRCUIT

Ignition switch in position 0.

1

Measure the resistance between the left-hand headlamp, connector C1LF08, pin 7, circuit GD130T (BK/YE), wiring
harness side and ground.

2

Measure the resistance between the left-hand headlamp, connector C1LF08, pin 9, circuit GD130AS (BK/YE), wiring
harness side and ground.

3

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Is a resistance of less than 2 Ohm measured in both cases?
Yes

INSTALL A NEW headlamp. TEST the system for normal operation

No

LOCATE and RECTIFY the break in the relevant circuit between the headlamp and soldered connection SP371 using the
wiring diagrams. TEST the system for normal operation

D5: CHECK THE VOLTAGE SUPPLY OF THE RIGHT-HAND HEADLAMP FOR OPEN CIRCUIT

Ignition switch in position 0.

1

Disconnect Right-hand headlamp from connector C1LF09.

2

Ignition switch in position II.

3

SWITCH ON dipped beam.

4

SWITCH ON main beam.

5

Measure the voltage between the right-hand headlamp, connector C1LF09 , pin 5, circuit CLF03A (VT/OG), wiring
harness side and ground.

6

Does the meter display battery voltage?
Yes

GO to D7

.

No

GO to D6

.

D6: CHECK THE VOLTAGE SUPPLY OF THE RIGHT-HAND HEADLAMP FOR OPEN CIRCUIT

Ignition switch in position 0.

1

Disconnect GEM from connector C1BP02-A.

2

Measure the resistance between the right-hand headlamp, connector C1LF09, pin 5, circuit CLF03A (VT/OG), wiring
harness side and the GEM, connector C1BP02-A, pin 73, circuit CLF03A (VT/OG), wiring harness side.

3

Is a resistance of less than 2 Ohms registered?
Yes

INSTALL a new GEM. TEST the system for normal operation

No

LOCATE AND RECTIFY break in circuit CLF03A (VT/OG) between headlamp and GEM using the Wiring Diagrams. TEST
the system for normal operation

D7: CHECK THE GROUND CONNECTION TO THE RIGHT-HAND HEADLAMP FOR OPEN CIRCUIT

Ignition switch in position 0.

1

Measure the resistance between the right-hand headlamp, connector C1LF09, pin 7, circuit GD132M (BK/VT), wiring
harness side and ground.

2

Measure the resistance between the right-hand headlamp, connector C1LF09, pin 9, circuit GD132X (BK/VT), wiring
harness side and ground.

3

Is a resistance of less than 2 Ohm measured in both cases?
Yes

INSTALL A NEW headlamp. TEST the system for normal operation

No

LOCATE and RECTIFY the break in the relevant circuit between the headlamp and soldered connection SP380 using the
wiring diagrams. TEST the system for normal operation

PINPOINT TEST E : THE HEADLAMPS ARE ON CONTINUOUSLY

TEST CONDITIONS

DETAILS/RESULTS/ACTIONS

E1: DETERMINE THE CONDITIONS UNDER WHICH THE FAULT OCCURS

Ignition switch in position II.

1

Lights control module set to OFF.

2

CHECK the headlamp.

3

Do the low beams illuminate continuously?
Yes

GO to E2

.

No

GO to E10

.

E2: DETERMINE VEHICLE EQUIPMENT LEVEL

Find out whether the vehicle is fitted with the daytime running lamps (DRL) option.

1

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Does the vehicle have daytime running lamps?
Yes

CHECK the software configuration of the GEM with the aid of the diagnostic unit and update it if required. TEST the
system for normal operation If the concern persists:

GO to E3

.

No

GO to E3

.

E3: CHECK FUSE F33 (5 A) (EJB)

Ignition switch in position 0.

1

Disconnect fuse F33 (5 A) (EJB).

2

CHECK fuse F33 (5 A) (EJB).

3

Is the fuse OK.?
Yes

GO to E4

.

No

RENEW fuse F33 (5 A) (EJB). TEST the system for normal operation If the fuse blows again, LOCATE and RECTIFY
short using the Wiring Diagrams. TEST the system for normal operation

E4: CHECK THE VOLTAGE SUPPLY TO FUSE F33 (5 A) (EJB) FOR OPEN CIRCUIT

Connect fuse F33 (5 A) (EJB).

1

Ignition switch in position II.

2

Measure the voltage between fuse F33 (5 A) (EJB) and ground.

3

Does the meter display battery voltage?
Yes

GO to E5

.

No

LOCATE AND RECTIFY the break in the voltage supply of fuse F33 (5 A) (EJB) with the aid of the wiring diagrams.
TEST the system for normal operation

E5: CHECK THE VOLTAGE SUPPLY TO THE LIGHTS CONTROL MODULE FOR OPEN CIRCUIT

Ignition switch in position 0.

1

Disconnect Lights control module from connector C2LF23D.

2

Ignition switch in position II.

3

Measure the voltage between the lights control module, connector C2LF23D, pin 1, circuit SBB33B (RD), wiring
harness side and ground.

4

Does the meter display battery voltage?
Yes

GO to E6

.

No

LOCATE and RECTIFY the break in the circuits between fuse F33 (5 A) (EJB) and the lights control module with the aid
of the wiring diagrams. TEST the system for normal operation

E6: CHECK THE GROUND CONNECTION OF THE LIGHTS CONTROL MODULE FOR OPEN CIRCUIT

Ignition switch in position 0.

1

Measure the resistance between the lights control module, connector C2LF23D, pin 5, circuit GD133BT (BK), wiring
harness side and ground.

2

Is a resistance of less than 2 Ohms registered?
Yes

GO to E8

.

No

LOCATE and RECTIFY the break in the circuits between the lights control module and ground connection G3D134 with
the aid of the Wiring Diagrams. TEST the system for normal operation

E7: CHECK THE LIN DATA BUS CONNECTION BETWEEN THE LIGHTS CONTROL MODULE AND THE GEM FOR OPEN CIRCUIT

Ignition switch in position 0.

1

Disconnect GEM from connector C1BP02-C.

2

Measure the resistance between the lights control module, connector C2LF23-D, pin 6, circuit VLF25A (GN/VT), wiring
harness side and the GEM, connector C1BP02-C, pin 52, circuit VLF25A (GN/VT), wiring harness side.

3

Is a resistance of less than 2 Ohms registered?
Yes

GO to E8

.

No

LOCATE and RECTIFY the break in circuit VLF25A (GN/VT) between the lighting control module and the GEM with the
aid of the Wiring Diagrams. TEST the system for normal operation

E8: CHECK THE LIN DATA BUS CONNECTION BETWEEN THE LIGHTS CONTROL MODULE AND THE GEM FOR SHORT TO BATTERY VOLTAGE

Disconnect the diagnostic tool.

1

Disconnect GEM from connector C1BP02-C.

2

Ignition switch in position II.

3

Measure the voltage between the lights control module, connector C2LF23-D, pin 6, circuit VLF25A (GN/VT), wiring
harness side and ground.

4

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Does the meter display battery voltage?
Yes

GO to E9

.

No

LOCATE and RECTIFY the short to battery voltage in circuit VLF25A (GN/VT) between the lighting control module and
the GEM with the aid of the Wiring Diagrams. TEST the system for normal operation

E9: CHECK THE LIN DATA BUS CONNECTION BETWEEN THE LIGHTS CONTROL MODULE AND THE GEM FOR SHORT TO GROUND

Ignition switch in position 0.

1

Measure the resistance between the lights control module, connector C2LF23-D, pin 6, circuit VLF25A (GN/VT), wiring
harness side and ground.

2

Is a resistance of more than 10,000 Ohm measured?
Yes

GO to E10

.

No

LOCATE and RECTIFY the short to ground in circuit VLF25A (GN/VT) between the lighting control module and the GEM
with the aid of the Wiring Diagrams. TEST the system for normal operation

E10: EXCLUDE THE GEM AS THE CAUSE OF THE FAULT

Ignition switch in position 0.

1

Disconnect GEM from connector C1BP02-A.

2

Ignition switch in position II.

3

CHECK the headlamp.

4

Is the left-hand low beam permanently lit?
Yes

- Left-hand low beam permanently lit: LOCATE and RECTIFY the short to battery voltage in circuit CLF04A (BN/BU)
between the GEM and the headlamp using the Wiring Diagrams. TEST the system for normal operation

No

- Right-hand low beam permanently lit: LOCATE and RECTIFY the short to battery voltage in circuit CLF05A (BU/GN)
between the GEM and the headlamp using the Wiring Diagrams. TEST the system for normal operation
- Left-hand main beam permanently lit: LOCATE and RECTIFY the short to battery voltage in circuit CLF02A (GY/BN)
between the GEM and the headlamp using the Wiring Diagrams. TEST the system for normal operation
- Right-hand high beam permanently lit: LOCATE and RECTIFY the short to battery voltage in circuit CLF03A (VT/OG)
between the GEM and the headlamp using the Wiring Diagrams. TEST the system for normal operation
- None of the headlamps is permanently lit: INSTALL a new GEM. TEST the system for normal operation If the concern
persists:
REFER to:

Communications Network

(418-00 Module Communications Network, Diagnosis and Testing).

PINPOINT TEST F : HEADLAMP FLASHER NOT FUNCTIONING

TEST

CONDITIONS

DETAILS/RESULTS/ACTIONS

F1: DETERMINE THE CONDITIONS UNDER WHICH THE FAULT OCCURS

Ignition switch in position II.

1

SWITCH ON dipped beam.

2

CHECK the headlamps in every setting of the switch.

3

OPERATE headlamp flasher.

4

SWITCH ON main beam.

5

Are the high beam and headlamp flasher inoperative?
Yes

GO to Pinpoint Test

B.

No

GO to F2

.

F2: RULE OUT THE HIGH BEAM HEADLAMP SWITCH AS THE CAUSE OF THE FAULT

CHECK the high beam headlamp switch according to the component tests at the end of this subsection:

1

Is the high beam headlamp switch OK? ?
Yes

CHECK the GEM and the steering wheel module using the Digital Multimeter and INSTALL A NEW one if necessary. TEST the system for
normal operation If the concern persists:REFER to:

Communications Network

(418-00 Module Communications Network, Diagnosis and

Testing).

No

RENEW the high beam headlamp switch. TEST the system for normal operation

PINPOINT TEST G : ADAPTIVE FRONT LIGHTING INOPERATIVE

TEST CONDITIONS

DETAILS/RESULTS/ACTIONS

G1: DETERMINE THE CONDITIONS UNDER WHICH THE FAULT OCCURS

NOTE: The adaptive front lighting module only adjusts the headlamps when the vehicle is driving at a speed greater than 3km/h.

Perform a road test to determine the exact conditions under which the fault occurs.

1

Is the adaptive lighting inoperative on the left-hand side?
Yes

The adaptive lighting is inoperative on the left-hand side:

GO to G12

.

No

- The adaptive lighting is inoperative on the right-hand side:

GO to G15

.

- The adaptive lighting is inoperative on both sides:

GO to G2

.

G2: CHECK FUSE F43 (5 A) (EJB)

Ignition switch in position 0.

1

Disconnect fuse F43 (5 A) (EJB).

2

CHECK fuse F43 (5 A) (EJB).

3

Is the fuse OK.?
Yes

GO to G3

.

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No

RENEW fuse F43 (5 A) (EJB). TEST the system for normal operation If the fuse blows again, LOCATE and RECTIFY short
using the Wiring Diagrams. TEST the system for normal operation

G3: CHECK THE VOLTAGE SUPPLY TO FUSE F43 (5 A) (EJB) FOR OPEN CIRCUIT

Connect fuse F43 (5 A) (EJB).

1

Ignition switch in position II.

2

Measure the voltage between fuse F43 (5 A) (EJB) and ground.

3

Does the meter display battery voltage?
Yes

GO to G4

.

No

LOCATE AND RECTIFY the break in the voltage supply of fuse F43 (5 A) (EJB) using the Wiring Diagrams. TEST the
system for normal operation

G4: CHECK FUSE F39 (15 A) (EJB)

Ignition switch in position 0.

1

Disconnect fuse F39 (15 A) (EJB).

2

CHECK fuse F39 (15 A) (EJB).

3

Is the fuse OK.?
Yes

GO to G5

.

No

RENEW fuse F39 (15 A) (EJB). TEST the system for normal operation If the fuse blows again, LOCATE and RECTIFY
short using the Wiring Diagrams. TEST the system for normal operation

G5: CHECK THE VOLTAGE SUPPLY TO FUSE F39 (15 A) (EJB) FOR OPEN CIRCUIT

Connect fuse F39 (15 A) (EJB).

1

Ignition switch in position II.

2

Measure the voltage between fuse F39 (15 A) (EJB) and ground.

3

Does the meter display battery voltage?
Yes

GO to G6

.

No

LOCATE AND RECTIFY the break in the voltage supply of fuse F39 (15 A) (EJB) using the Wiring Diagrams. TEST the
system for normal operation

G6: CHECK VOLTAGE SUPPLY TO THE ADAPTIVE FRONT LIGHTING MODULE FOR OPEN CIRCUIT

Ignition switch in position 0.

1

Disconnect Adaptive front lighting module from connector C2LF23-C.

2

Ignition switch in position II.

3

Measure the voltage between adaptive front lighting module, connector C2LF23-C, pin 10, circuit CBB43C (GY), wiring
harness side and ground.

4

Does the meter display battery voltage?
Yes

GO to G7

.

No

LOCATE and RECTIFY the break in the circuit between fuse F43 (5 A) (EJB) and the adaptive front lighting module with
the aid of the wiring diagrams. TEST the system for normal operation

G7: CHECK VOLTAGE SUPPLY TO THE ADAPTIVE FRONT LIGHTING MODULE FOR OPEN CIRCUIT

Ignition switch in position 0.

1

Disconnect Adaptive front lighting module from connector C2LF23-C.

2

Ignition switch in position II.

3

Measure the voltage between adaptive front lighting module, connector C2LF23-C, pin 9, circuit CBB39C (VT/WH),
wiring harness side and ground.

4

Does the meter display battery voltage?
Yes

GO to G8

.

No

LOCATE and RECTIFY the break in circuit CBB39C (VT/WH) between fuse F39 (15 A) (EJB) and the adaptive front
lighting module with the aid of the wiring diagrams. TEST the system for normal operation

G8: CHECK THE GROUND CONNECTION OF THE ADAPTIVE FRONT LIGHTING MODULE FOR OPEN CIRCUIT

Ignition switch in position 0.

1

Measure the resistance between the adaptive front lighting module, connector C2LF23-C, pin 11, circuit GD138BU
(BK/WH), wiring harness side and ground.

2

Is a resistance of less than 2 Ohms registered?
Yes

GO to G9

.

No

LOCATE and RECTIFY the break in circuit GD138BU (BK/WH) between the adaptive front lighting module and soldered
connection SP518 with the aid of the wiring diagrams. TEST the system for normal operation

G9: CHECK THE LIN DATA BUS CONNECTION BETWEEN THE ADAPTIVE FRONT LIGHTING MODULE AND THE HEADLAMP FOR SHORT TO BATTERY
VOLTAGE

Ignition switch in position 0.

1

Disconnect Left-hand headlamp from connector C1LF08.

2

Disconnect Right-hand headlamp from connector C1LF09.

3

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Ignition switch in position II.

4

Measure the voltage between the adaptive front lighting module, connector C2LF23-C, pin 17, circuit VLF32B (YE),
wiring harness side and ground.

5

Does the meter display battery voltage?
Yes

LOCATE and RECTIFY the short to battery voltage in the circuits connected to the adaptive front lighting module,
connector C2LF23-C, pin 17 using the Wiring Diagrams. TEST the system for normal operation

No

GO to G10

.

G10: CHECK THE LIN DATA BUS CONNECTION BETWEEN THE ADAPTIVE FRONT LIGHTING MODULE AND THE HEADLAMP FOR SHORT TO GROUND

Ignition switch in position 0.

1

Measure the resistance between the adaptive front lighting module, connector C2LF23-C, pin 17, circuit VLF32B (YE),
wiring harness side and ground.

2

Is a resistance of more than 10,000 Ohm measured?
Yes

GO to G11

.

No

LOCATE and RECTIFY the short to ground in the circuits connected to the adaptive front lighting module, connector
C2LF23-C, pin 17 using the Wiring Diagrams. TEST the system for normal operation

G11: CHECK THE LIN DATA BUS CONNECTION BETWEEN THE ADAPTIVE FRONT LIGHTING MODULE AND THE HEADLAMP FOR OPEN CIRCUIT

Measure the resistance between the adaptive front lighting module, connector C2LF23-C, pin 17, circuit VLF32B (YE),
wiring harness side and the left-hand headlamp, connector C1LF08, pin 14, circuit VLF23A (YE), wiring harness side.

1

Is a resistance of less than 2 Ohms registered?
Yes

RENEW the adaptive front lighting module. TEST the system for normal operation If the concern persists:REFER to:

Communications Network

(418-00 Module Communications Network, Diagnosis and Testing).

No

LOCATE and RECTIFY the break in the circuit(s) between the adaptive front lighting module and intermediate connection
C21A/B with the aid of the Wiring Diagrams. TEST the system for normal operation

G12: CHECK THE POWER SUPPLY TO THE LEFT-HAND HEADLAMP FOR OPEN CIRCUIT (ADJUSTMENT UNIT FOR THE ADAPTIVE LIGHTING)

Ignition switch in position 0.

1

Disconnect Left-hand headlamp from connector C1LF08.

2

Ignition switch in position II.

3

Measure the voltage between left-hand headlamp, connector C1LF08, pin 13, circuit CBB39E (VT/WH), wiring harness
side and ground.

4

Does the meter display battery voltage?
Yes

GO to G13

.

No

LOCATE and RECTIFY break in circuit CBB39E (VT/WH) between headlamp and soldered connection SP172 using the
Wiring Diagrams. TEST the system for normal operation

G13: CHECK THE GROUND CONNECTION OF THE LEFT-HAND HEADLAMP FOR OPEN CIRCUIT (ADJUSTMENT UNIT FOR THE ADAPTIVE LIGHTING)

Ignition switch in position 0.

1

Measure the resistance between the left-hand headlamp, connector C1LF08, pin 11, circuit GD130AE (BK/YE), wiring
harness side and ground.

2

Is a resistance of less than 2 Ohms registered?
Yes

GO to G14

.

No

LOCATE and RECTIFY the break in circuit GD130AE (BK/YE) between the headlamp and soldered connection SP371
using the Wiring Diagrams. TEST the system for normal operation

G14: CHECK THE LIN DATA BUS CONNECTION BETWEEN THE LEFT-HAND HEADLAMP AND INTERMEDIATE CONNECTION C21A/B FOR OPEN
CIRCUIT

Ignition switch in position 0.

1

Disconnect Adaptive front lighting module from connector C2LF23-C.

2

Measure the resistance between the adaptive front lighting module, connector C2LF23-C, pin 17, circuit VLF32B (YE),
wiring harness side and the left-hand headlamp, connector C1LF08, pin 14, circuit VLF32A (YE), wiring harness side.

3

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Is a resistance of less than 2 Ohms registered?
Yes

INSTALL A NEW headlamp. TEST the system for normal operation If the concern persists:REFER to:

Communications

Network

(418-00 Module Communications Network, Diagnosis and Testing).

No

LOCATE and RECTIFY the break in the circuit(s) between the left-hand headlamp and intermediate connection C21A/B
with the aid of the wiring diagrams. TEST the system for normal operation

G15: CHECK THE POWER SUPPLY TO THE RIGHT-HAND HEADLAMP FOR OPEN CIRCUIT (ADJUSTMENT UNIT FOR THE ADAPTIVE LIGHTING)

Ignition switch in position 0.

1

Disconnect Right-hand headlamp from connector C1LF09.

2

Ignition switch in position II.

3

Measure the voltage between the right-hand headlamp, connector C1LF09, pin 13, circuit CBB39F (VT/WH), wiring
harness side and ground.

4

Does the meter display battery voltage?
Yes

GO to G16

.

No

LOCATE and RECTIFY break in circuit CBB39F (VT/WH) between headlamp and soldered connection SP172 using the
Wiring Diagrams. TEST the system for normal operation

G16: CHECK THE GROUND CONNECTION OF THE RIGHT-HAND HEADLAMP FOR OPEN CIRCUIT (ADJUSTMENT UNIT FOR THE ADAPTIVE LIGHTING)

Ignition switch in position 0.

1

Measure the resistance between the right-hand headlamp, connector C1LF09, pin 11, circuit GD132W (BK/VT), wiring
harness side and ground.

2

Is a resistance of less than 2 Ohms registered?
Yes

GO to G17

.

No

LOCATE and RECTIFY the break in circuit GD132W (BK/VT) between the headlamp and soldered connection SP380 using
the Wiring Diagrams. TEST the system for normal operation

G17: CHECK THE LIN DATA BUS CONNECTION BETWEEN THE RIGHT-HAND HEADLAMP AND INTERMEDIATE CONNECTION C21A/B FOR OPEN
CIRCUIT

Ignition switch in position 0.

1

Disconnect Adaptive front lighting module from connector C2LF23-C.

2

Measure the resistance between the adaptive front lighting module, connector C2LF23-C, pin 17, circuit VLF32B (YE),
wiring harness side and the right-hand headlamp, connector C1LF09, pin 14, circuit VLF32C (YE), wiring harness side.

3

Is a resistance of less than 2 Ohms registered?
Yes

INSTALL A NEW headlamp. TEST the system for normal operation If the concern persists:REFER to:

Communications

Network

(418-00 Module Communications Network, Diagnosis and Testing).

No

LOCATE and RECTIFY the break in the circuit(s) between the right-hand headlamp and intermediate connection C21A/B
with the aid of the wiring diagrams. TEST the system for normal operation

PINPOINT TEST H : CORNERING LIGHTS INOPERATIVE OR PERMANENTLY ON

TEST CONDITIONS

DETAILS/RESULTS/ACTIONS

H1: DETERMINE THE CONDITIONS UNDER WHICH THE FAULT OCCURS

NOTE: The cornering lights are only switched on when the vehicle is driving at a speed of less than 80 km/h and the low beam headlamps are switched
on.
NOTE: The intensity of the cornering lights increases on a ramp up to the maximum value when they are switched on, and it decreases on a ramp until
the cornering lights go out when they are switched off.
NOTE: Only the cornering light on the inside of the bend is switched on.

SWITCH ON dipped beam.

1

Turn the steering approximately 30° to the left and right.

2

CHECK the cornering lights on the left and right.

3

Are the cornering lights inoperative in both cases?
Yes

GO to H2

.

No

- Left-hand cornering light inoperative:

GO to H9

.

- Right-hand cornering light inoperative:

GO to H12

.

- One cornering light permanently lit:

GO to H15

.

- Both cornering lights permanently on even though the steering wheel is in the straight ahead position: RENEW the
adaptive front lighting module. TEST the system for normal operation If the concern persists:REFER to:

Communications

Network

(418-00 Module Communications Network, Diagnosis and Testing).

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- Both cornering lights permanently on during cornering: RENEW the adaptive front lighting module. TEST the system
for normal operation If the concern persists:REFER to:

Communications Network

(418-00 Module Communications

Network, Diagnosis and Testing).

H2: CHECK FUSE F43 (5 A) (EJB)

Ignition switch in position 0.

1

Disconnect fuse F43 (5 A) (EJB).

2

CHECK fuse F43 (5 A) (EJB).

3

Is the fuse OK.?
Yes

GO to H3

.

No

RENEW fuse F43 (5 A) (EJB). TEST the system for normal operation If the fuse blows again, LOCATE and RECTIFY the
short to ground using the Wiring Diagrams. TEST the system for normal operation

H3: CHECK THE VOLTAGE SUPPLY TO FUSE F43 (5 A) (EJB) FOR OPEN CIRCUIT

Connect fuse F43 (5 A) (EJB).

1

Ignition switch in position II.

2

Measure the voltage between fuse F43 (5 A) (EJB) and ground.

3

Does the meter display battery voltage?
Yes

GO to H4

.

No

LOCATE AND RECTIFY the break in the voltage supply of fuse F43 (5 A) (EJB) using the Wiring Diagrams. TEST the
system for normal operation

H4: CHECK FUSE F39 (15 A) (EJB)

Ignition switch in position 0.

1

Disconnect fuse F39 (15 A) (EJB).

2

CHECK fuse F39 (15 A) (EJB).

3

Is the fuse OK.?
Yes

GO to H5

.

No

RENEW fuse F39 (15 A) (EJB). TEST the system for normal operation If the fuse blows again, LOCATE and RECTIFY the
short to ground using the Wiring Diagrams. TEST the system for normal operation

H5: CHECK THE VOLTAGE SUPPLY TO FUSE F39 (15 A) (EJB) FOR OPEN CIRCUIT

Connect fuse F39 (15 A) (EJB).

1

Ignition switch in position II.

2

Measure the voltage between fuse F39 (15 A) (EJB) and ground.

3

Does the meter display battery voltage?
Yes

GO to H6

.

No

LOCATE AND RECTIFY the break in the voltage supply of fuse F39 (15 A) (EJB) using the Wiring Diagrams. TEST the
system for normal operation

H6: CHECK VOLTAGE SUPPLY TO THE ADAPTIVE FRONT LIGHTING MODULE FOR OPEN CIRCUIT

Ignition switch in position 0.

1

Disconnect Adaptive front lighting module from connector C2LF23-C.

2

Ignition switch in position II.

3

Measure the voltage between adaptive front lighting module, connector C2LF23-C, pin 10, circuit CBB43C (GY), wiring
harness side and ground.

4

Does the meter display battery voltage?
Yes

GO to H7

.

No

LOCATE and RECTIFY break in circuit between soldered connection SP171 and adaptive front lighting module using the
Wiring Diagrams. TEST the system for normal operation

H7: CHECK VOLTAGE SUPPLY TO THE ADAPTIVE FRONT LIGHTING MODULE FOR OPEN CIRCUIT

Ignition switch in position 0.

1

Disconnect Adaptive front lighting module from connector C2LF23-C.

2

Ignition switch in position II.

3

Measure the voltage between adaptive front lighting module, connector C2LF23-C, pin 9, circuit CBB39C (VT/WH),
wiring harness side and ground.

4

Does the meter display battery voltage?
Yes

GO to H8

.

No

LOCATE and RECTIFY the break in the circuit between fuse F39 (15 A) (EJB) and the adaptive front lighting module with
the aid of the wiring diagrams. TEST the system for normal operation

H8: CHECK THE GROUND CONNECTION OF THE ADAPTIVE FRONT LIGHTING MODULE FOR OPEN CIRCUIT

Ignition switch in position 0.

1

Measure the resistance between the adaptive front lighting module, connector C2LF23-C, pin 1, circuit GD138BU
(BK/WH), wiring harness side and ground.

2

Is a resistance of less than 2 Ohms registered?

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Yes

RENEW the adaptive front lighting module. TEST the system for normal operation If the concern persists:REFER to:

Communications Network

(418-00 Module Communications Network, Diagnosis and Testing).

No

LOCATE and RECTIFY break in circuit between adaptive front lighting module and soldered connection SP518 using the
Wiring Diagrams. TEST the system for normal operation

H9: CHECK THE VOLTAGE SUPPLY TO THE CORNERING LIGHT, LEFT-HAND HEADLAMP

NOTE: There is a delay before full battery voltage is applied to the cornering light on the inside of the bend.

Ignition switch in position 0.

1

Disconnect Left-hand headlamp from connector C1LF08.

2

Ignition switch in position II.

3

SWITCH ON dipped beam.

4

Turn the steering approximately 30° to the left.

5

Measure the voltage between left-hand headlamp, connector C1LF08, pin 6, circuit CLF06B (BN/GN), wiring harness
side and ground.

6

Does the meter display battery voltage?
Yes

GO to H11

.

No

GO to H10

.

H10: CHECK THE VOLTAGE SUPPLY TO THE CORNERING LIGHT, LEFT-HAND HEADLAMP

Ignition switch in position 0.

1

Disconnect Adaptive front lighting module from connector C2LF23-C.

2

Measure the resistance between the left-hand headlamp, connector C1LF08, pin 6, circuit CLF06B (BN/GN), wiring
harness side and the adaptive lighting module, connector C2LF23-C, pin 12, circuit CLF06A (BN/GN), wiring harness

side.

3

Is a resistance of less than 2 Ohms registered?
Yes

RENEW the adaptive front lighting module. TEST the system for normal operation If the concern persists:REFER to:

Communications Network

(418-00 Module Communications Network, Diagnosis and Testing).

No

LOCATE and RECTIFY break in the circuit between the adaptive front lighting module and the headlamp with the aid of
the Wiring Diagrams. TEST the system for normal operation

H11: CHECK THE GROUND CONNECTION OF THE CORNERING LIGHT, LEFT-HAND HEADLAMP, FOR OPEN CIRCUIT

Ignition switch in position 0.

1

Measure the resistance between the left-hand headlamp, connector C1LF08, pin 7, circuit GD130T (BK/YE), wiring
harness side and ground.

2

Measure the resistance between the left-hand headlamp, connector C1LF08, pin 9, circuit GD130AS (BK/YE), wiring
harness side and ground.

3

Is a resistance of less than 2 Ohm measured in both cases?
Yes

INSTALL A NEW headlamp. TEST the system for normal operation

No

- If a resistance of less than 2 Ohm is measured in one of the measurements: LOCATE and RECTIFY the break in the
relevant circuit(s) between soldered connection SP371 and the headlamp with the aid of the Wiring Diagrams. TEST the
system for normal operation
- If a resistance of less than 2 Ohm is measured in both of the measurements: LOCATE and RECTIFY the break in the
circuit(s) between soldered connection SP371 and ground connection G1D130A with the aid of the Wiring Diagrams.
TEST the system for normal operation

H12: CHECK THE VOLTAGE SUPPLY TO THE CORNERING LIGHT, RIGHT-HAND HEADLAMP, FOR OPEN CIRCUIT

NOTE: There is a delay before full battery voltage is applied to the cornering light on the inside of the bend.

Ignition switch in position 0.

1

Disconnect Right-hand headlamp from connector C1LF09.

2

Ignition switch in position II.

3

SWITCH ON dipped beam.

4

Turn the steering approximately 30° to the right.

5

Measure the voltage between the right-hand headlamp, connector C1LF09 , pin 6, circuit CLF07B (GY/OG), wiring
harness side and ground.

6

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Component checks

High beam headlamp switch

Pin occupation, component side:

NOTE: The value measured in the continuity test of the high beam switch should be less than 50 Ohm.

Does the meter display battery voltage?
Yes

GO to H14

.

No

GO to H13

.

H13: CHECK THE VOLTAGE SUPPLY TO THE CORNERING LIGHT, RIGHT-HAND HEADLAMP, FOR OPEN CIRCUIT

Ignition switch in position 0.

1

Disconnect Adaptive front lighting module from connector C2LF23-C.

2

Measure the resistance between the right-hand headlamp, connector C1LF09, pin 6, circuit CLF07B (GY/OG), wiring
harness side and the adaptive lighting module, connector C2LF23-C, pin 23, circuit CLF07A (GY/OG), wiring harness

side.

3

Is a resistance of less than 2 Ohms registered?
Yes

RENEW the adaptive front lighting module. TEST the system for normal operation If the concern persists:REFER to:

Communications Network

(418-00 Module Communications Network, Diagnosis and Testing).

No

LOCATE and RECTIFY break in the circuit(s) between the adaptive front lighting module and the headlamp with the aid
of the Wiring Diagrams. TEST the system for normal operation

H14: CHECK THE GROUND CONNECTION OF THE CORNERING LIGHT, RIGHT-HAND HEADLAMP, FOR OPEN CIRCUIT

Ignition switch in position 0.

1

Measure the resistance between the right-hand headlamp, connector C1LF09, pin 7, circuit GD132M (BK/VT), wiring
harness side and ground.

2

Measure the resistance between the left-hand headlamp, connector C1LF09, pin 9, circuit GD132X (BK/VT), wiring
harness side and ground.

3

Is a resistance of less than 2 Ohm measured in both cases?
Yes

INSTALL A NEW headlamp. TEST the system for normal operation

No

- If a resistance of less than 2 Ohm is measured in one of the measurements: LOCATE and RECTIFY the break in the
relevant circuit(s) between soldered connection SP380 and the headlamp with the aid of the Wiring Diagrams. TEST the
system for normal operation
- If a resistance of less than 2 Ohm is measured in both of the measurements: LOCATE and RECTIFY the break in the
circuit(s) between soldered connection SP380 and ground connection G1D132A with the aid of the Wiring Diagrams.
TEST the system for normal operation

H15: RULE OUT THE ADAPTIVE LIGHTING MODULE AS THE CAUSE OF THE FAULT

Ignition switch in position 0.

1

Disconnect fuse F39 (15 A) (EJB).

2

Disconnect fuse F43 (5 A) (EJB).

3

Ignition switch in position II.

4

CHECK the cornering lights.

5

Is the left-hand cornering light permanently on?
Yes

LOCATE and RECTIFY the short to battery voltage in the circuits between the adaptive lighting module and the left-hand
headlamp with the aid of the Wiring Diagrams. TEST the system for normal operation

No

- Right-hand cornering light permanently lit: LOCATE and RECTIFY the short to battery voltage in the circuits between
the adaptive lighting module and the right-hand headlamp with the aid of the Wiring Diagrams. TEST the system for
normal operation
- None of the cornering lights is permanently lit: RENEW the adaptive front lighting module. TEST the system for normal
operation If the concern persists:REFER to:

Communications Network

(418-00 Module Communications Network,

Diagnosis and Testing).

Circuit to test

Connect a digital multimeter with the following

connections

Set the switch to the following

position

Switch is OK when the following test readings

are seen

Headlamp flasher

1 and 3

Off

Open circuit

On

Closed circuit

High beam

1 and 6

Off

Open circuit

On

Closed circuit

Left-hand turn

1 and 5

Neutral position

Open circuit

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signal

On

Closed circuit

Right-hand turn

signal

1 and 4

Neutral position

Open circuit

On

Closed circuit

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