ABS Warning Indicator

Tests 1 Through 5:

Tests 6 Through 11:

Tests 12 Through 16:

Tests 17 Through 16:

Symptom:
ABS WARNING INDICATOR

When Monitored:
1. Ignition on.
2. Checked every 7 milliseconds.

Set Condition:
When the ABS warning lamp driver circuit voltage does not match the CAB command, the diagnostic trouble code (DTC) is set.

POSSIBLE CAUSES
ABS LAMP RELAY CONTROL CIRCUIT SHORTED TO GROUND
ABS LAMP RELAY TERMINAL OBSERVABLE DEFECT
ANTILOCK BRAKE SYSTEM LAMP RELAY CONTROL CIRCUIT OPEN
ANTILOCK BRAKE SYSTEM LAMP RELAY DEFECTIVE
ANTILOCK BRAKE SYSTEM LAMP RELAY DEFECTIVE
ANTILOCK BRAKE SYSTEM LAMP RELAY GROUND CIRCUIT OPEN
ANTILOCK BRAKE SYSTEM WARNING INDICATOR DEFECTIVE
ANTILOCK BRAKE SYSTEM WARNING INDICATOR DRIVER CIRCUIT OPEN
ANTILOCK BRAKE SYSTEM WARNING INDICATOR GOES ON/OFF
CAB CONNECTOR TERMINAL OBSERVABLE DEFECT
CAB CONNECTOR TERMINAL OBSERVABLE DEFECT
CONTROLLER ANTILOCK BRAKE DEFECTIVE
CONTROLLER ANTILOCK BRAKE DEFECTIVE
FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN
FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN TO LAMP
FUSED IGNITION SWITCH OUTPUT CIRCUIT SHORTED TO GROUND
INSTRUMENT CLUSTER DEFECTIVE
WARNING INDICATOR DRIVER SHORTED TO GROUND