MR293R190_915



































ELECTRONICALLY CONTROLLED HYDRAULIC SYSTEMS
Bosch ABS
38
This is a base with 15 contacts identical to those
on the ABS computer, on a printed circuit with
electrical contacts numbered from 1 to 15.
Each number corresponds to an electrical
connection in the vehicle wiring and is indicated
on the diagram on the next page.
It is used for quick and accurate testing of all the
electrical connections on the main ABS connector.
CHECKING THE WIRING
Connection
Ignition off, disconnect the ABS computer from its
base and connect bornier Elé. 1286 in its place.
Principle of the testing method
Apply the test pin of the XR25 or the multimeter
to the numbered indicated on the bornier.
Test equipment which may be used
•
XR 25 :
-    measure continuity using the buzzer,
-    measure voltage using the voltmeter.
•
Multimeter
-    measure resistance,
-    measure voltage.
Solenoid valve coil resistance :
approximately 1.2 W.
Pump / motor coil resistance:
approximately 0.5 to 1 W.
Sensor resistance (at 20°C)
approximately 1.2 kW.
Pump / motor relay:
Coil resistance approximately 55 W.
Solenoid valve relay:
Coil resistance approximately 55W.
SPECIAL TOOLING REQUIRED
Elé. 1286
Bornier for testing the wiring using
the XR25 or multimeter
NOTE:
•
Never disconnect the computer when a
voltage is applied to the circuit.
•
Earths and resistances should be measured
with the battery disconnected.
96953S
38-125