Table C - Amber ABS Warning Indicator Off Always, No DTCS Stored

Table C: Amber ABS Warning Indicator Schematic:

CIRCUIT DESCRIPTION
This symptom table checks the state of the ABS warning indicator to identify a situation in which the driver could not be warned of a system malfunction by the ABS warning indicator, or the ABS warning indicator is always off. Due to an integral lamp driver module within the instrument panel cluster, the EBTCM must provide a ground to turn the amber ABS warning indicator off. Because of the circuitry in the integral Lamp Driver Module (LDM), only external malfunctions can be detected. As a result, the integral LDM itself is not diagnosable. In the event of an open in CKT 867, the ABS warning indicator will be on at all times, due to the loss of ground at the integral LDM input. If the control line is shorted to ground, the ABS warning indicator is kept off, due to the integral LDM input being grounded. If there is an open, short to ground or voltage on CKT 867, DTC C1311 will be set.

Table C: Amber ABS Warning Indicator Off Constantly, No DTCs Stored:

DIAGNOSTIC AIDS
An intermittent malfunction may be caused by poor connection, rubbed through wire insulation, or a wire that is broken inside the insulation. The lamp test function of the scan tool may be used to command the indicator on while looking for an intermittent malfunction in the ABS warning indicator circuitry. Any circuitry that is suspected of causing the intermittent complaint should be thoroughly checked for backed out terminals, improper mating, broken locks, improperly formed or damaged terminals, poor terminal to wiring connections or physical damage to the wiring harness.

NOTE: J 39200 test leads must be zeroed prior to making any resistance measurements.