The Diagnostic Connector

Pin Name (see above)	Pin Name	Function
A	FEN	Trouble code output (engine control computer)
B	MEN	Switch monitor output (engine control computer)
C	TEN	Diagnostic-mode input (engine control computer)
D	+B	Switched battery voltage
E	GND	Ground
F	FAT	Trouble code output (automatic transmission control computer)
G	FBS	Trouble code output (anti-lock brakes (ABS) control computer)
H	FAC	Trouble code output (air conditioning (A/C))
J	FWS	Trouble code output (Four wheel steering (4WS))
K	FSC	Trouble code output (cruise (speed) control computer)
L	-	Not used
M	TAT	Diagnostic-mode input (automatic transmission control computer)
N	TBS	Diagnostic-mode input (anti-lock brakes (ABS) control computer)
P	TAC	Diagnostic-mode input (air conditioning (A/C))
Q	TWS	Diagnostic-mode input (Four wheel steering (4WS))
R	TSC	Diagnostic-mode input (cruise (speed) control computer)
S	-	Not used
T	FAB	Trouble code output (air-bag diagnostic monitor computer)
U	IG-	Igniter coil output (for connection to external tachometer)
V	GND	Ground
W	TFA	Diagnostic-mode input (Special use only)
X	F/P	Fuel pump relay coil (ground to activate fuel pump)
Y	TAB	Horn relay
Z	-	Not used
3	-	Not used

Malfunction codes can be retrieved from the engine, ABS, automatic transmission, Cruise Control, 4WS and air-bag computers by reading the codes flashed by the LED.

Engine Malfunction Codes

Engine codes can be read by connecting the TEN and GND pins, using the jumper wire. (See above for the location of this pin) and The LED connected to B+ and FEN pins. The codes are read by counting the number of flashes given out from the LED. The RED lead goes to the B+ pin

BE CAREFUL CONNECTING THE B+ PIN... this is a live 30A feed

The first series of long flashes (1.2 Secs) are the tens position. There is a short pause (1.6 Secs) and then the second series of quick flashes (0.4 Secs) begins which are the digits. The codes are repeated indefinitely.

Example: ------ ------ (2) -- -- -- (3) is 23 - RH 02 Sensor

A summary of the codes and the reasons:

Code	Affected System or Component
	FE	KL
02	NE1 (crankshaft position sensor)	NE2 (crankshaft position sensor 2)
03	G (crankshaft position sensor)	G (crankshaft position sensor 1)
04		NE1 (crankshaft position sensor 1)
05		Knock sensor
06	Vehicle speed sensor
08	Airflow Sensor	Airflow Sensor
09	Water Thermosensor (EGI)	Water Thermosensor (EGI)
10		Intake Air Thermosensor
12	Throttle position sensor	Throttle position sensor
14	BARO sensor (located within ECU)	BARO sensor (located within ECU)
15	Oxygen Sensor	Oxygen Sensor LH
16		EGR Position Sensor
17	Feedback System (02 Sensor)	Feedback System (LH 02 Sensor)
23		Oxygen Sensor RH
24		Feedback System (RH 02 Sensor)
25	Solenoid Valve (Pressure Regulator Control)	Solenoid Valve (Pressure Regulator Control)
26	Solenoid Valve (Purge Control)	Solenoid Valve (Purge Control)
28	Solenoid Valve (EGR Control)	Solenoid Valve (EGR Vacuum)
29		Solenoid Valve (EGR Vent)
34	Solenoid Valve (ISC)	Solenoid Valve (ISC)
41		Solenoid Valve (VRIS1)
46		Solenoid Valve (VRIS2)
67	Electric Cooling Fan Relay (Low temp)	Electric Cooling Fan Relay No1
68	Electric Cooling Fan Relay (High temp (ATX))
69	Water Thermosensor Fan	Water Thermosensor Fan

Automatic Transmission (ATX) Malfunction Codes

Automatic transmission codes can be read by connecting the TAT and GND pins (see above for the location of this pin) and The LED connected to B+ and FAT pins. The codes are read exactly as they are when reading the engine codes. A summary of the codes and the reasons:

 

Code	Affected System or Component
01	NE1 (crankshaft position sensor)
06	Vehicle speed sensor
12	Throttle position sensor
14	BARO sensor (located within PCME)
55	Vehicle speed pulse generator
56	ATF thermosensor
57	Reduce torque signal 1
58	Reduce torque signal 2
59	Torque reduced/ECT sensor
60	1-2 shift solenoid valve
61	2-3 shift solenoid valve
62	3-4 shift solenoid valve
63	Converter lock-up solenoid valve
64	3-2 timing solenoid valve
65	Converter lock-up valve
66	Line pressure solenoid valve

Anti-Lock Braking System (ABS) Malfunction Codes

Anti-lock braking (ABS) system codes are read when the TBS and GND pins are connected in the Diagnostic connector (see above) and The LED connected to B+ and FBS pins. The codes are read, again, like the engine codes. A summary of codes and the reasons:

 

Code	Affected System or Component
11	Right front wheel speed sensor or rotor
12	Left front wheel speed sensor or rotor
13	Right rear wheel speed sensor or rotor
14	Left rear wheel speed sensor or rotor
15	Wheel speed sensor
22	Hydraulic unit harness
51	Fail-safe relay
53	Motor or motor relay
61	ABS control unit

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