420F

420F-VALVE CONTROL RELAY SUPPLY VOLTAGE PERFORMANCE

For a complete wiring diagram Consult Diagrams/Electrical.

- When Monitored:
Ignition on. The Anti-Lock Brake Module monitors its internal microprocessors for correct operation.

- Set Condition:
If the Anti-lock brake module detects an internal fault, the DTC is set.





Diagnostic Test

1. ABM INTERNAL FAILURE DTC PRESENT
Turn the ignition on.
With the scan tool, read DTCs.
With the scan tool, erase DTCs.
Turn the ignition off.
Turn the ignition on.
With the scan tool, read DTCs.
Does the scan tool display 420F-VALVE CONTROL RELAY SUPPLY VOLTAGE PERFORMANCE?

Yes

- Replace the Anti-Lock Brake Module.
- Perform ABS VERIFICATION TEST. Verification Tests.

No

- Refer to the ABS-INTERMITTENT CONDITION TEST.