No Response From Controller Antilock Brake

Test 164-169:

Test 170-173:

Symptom:
*NO RESPONSE FROM CAB CONTROLLER

POSSIBLE CAUSES
PCI BUS OPEN TO CAB
FUSED IGNITION SWITCH OUTPUT CIRCUIT INTERMITTENTLY SHORTED TO GROUND
FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN
FUSED IGNITION SWITCH OUTPUT CIRCUIT SHORTED TO GROUND
GROUND CIRCUIT OPEN
CAB DEFECTIVE - FUSED IGNITION SWITCH OUTPUT SHORTED TO GROUND
CAB DEFECTIVE - NO RESPONSE