C120D

C120D-REAR TRACTION CONTROL PRIME VALVE CONTROL CIRCUIT LOW





For a complete wiring diagram Refer to Diagrams/Electrical.


- When Monitored:
Continuous

- Set Condition:
The electrical feedback of the power stage does not correspond with the activation of the respective valve.







Diagnostic Test


1. HIGH RESISTANCE IN B+ CIRCUITS




Turn key off.
Disconnect the ABS Module harness connector.

NOTE: Check connector - Clean/repair as necessary.

Turn key on, engine off.
With a test light connected to ground check (A107) Fused B+, (A111) Fused B+ and (F960) Fused ignition switch output.
Is the test light bright like when connected to the battery?

Yes


- Go to 2


No


- Repair the high resistance in the circuits.
- Perform ABS VERIFICATION TEST - VER 1.ABS Verification Test



2. HIGH RESISTANCE IN GROUND CIRCUITS




With a test light Connected to B+ check (Z107) Ground and (Z127) Ground.

Is the test light bright like when connected to the battery?

Yes


- Replace the ABS.
- Perform ABS VERIFICATION TEST - VER 1.ABS Verification Test


No


- Repair the high resistance in the circuits.
- Perform ABS VERIFICATION TEST - VER 1.ABS Verification Test