Internal Main Relay

Test 1 And 2:

Test 3 Through 7:

Test 8 Through 10:

Symptom:
INTERNAL MAIN RELAY

When Monitored and Set Condition:
INTERNAL MAIN RELAY

When Monitored: Ignition turned on for at least 3.5 seconds. ABS power relay closed. Valve command for a particular solenoid not present.

Set Condition: Low feedback voltage from the low side of all the solenoids for over 20 consecutive controller checks spaced 5 milliseconds (ms) apart.

POSSIBLE CAUSES
FUSE BLOWN - FUSED B(+) CIRCUIT
GROUND CIRCUIT CONNECTION POOR
FUSED B(+) CIRCUIT OPEN
GROUND CIRCUIT OPEN
FUSED B(+) CIRCUIT SHORTED TO GROUND
FUSED B(+) CIRCUIT INTERMITTENTLY SHORTED TO GROUND
GROUND CIRCUIT RADIO FREQUENCY INTERFERENCE
CAB DEFECTIVE - FUSED B(+) CIRCUIT OPEN
CAB DEFECTIVE - GROUND CIRCUIT OPEN
CAB DEFECTIVE - FUSED B(+) CIRCUIT SHORTED TO GROUND