Internal Main Relay

Tests 1 Through 3:

Tests 4 Through 8:

Tests 9 And 10:

Symptom:
INTERNAL MAIN RELAY

When Monitored and Set Condition:
INTERNAL MAIN RELAY

When Monitored:
1. Ignition turned on for at least 3.5 seconds.
2. ABS main relay command given.
3. None of the valve (solenoid) commands given.

Set Condition:
4. Low feedback voltage from the low side of all solenoids.
5. Criteria 1 4 satisfied for over 20 consecutive controller checks spaced 5 milliseconds apart.

POSSIBLE CAUSES
ABS PUMP FUSE FAULTY
HCU CONNECTOR DAMAGED (EBC 2 ONLY)
HCU CONNECTOR DISCONNECTED (EBC 2 ONLY)
WIRING HARNESS OBSERVABLE DEFECT (EBC 2 ONLY)
FUSED B (+) CIRCUIT OPEN
CAB CONNECTOR OBSERVABLE DEFECT
CAB DEFECTIVE