Table D ABS Active Indicator Inoperative

Table D: ABS Active Indicator Inoperative (Part 1 Of 2):

Table D: ABS Active Indicator Inoperative (Part 2 Of 2):

Table D Schematic:

Circuit Description
The ABS ACTIVE indicator lamp is connected to the GAUGE fuse through CKT 39. This circuit is hot in the ON and START ignition switch positions. The Electronic Brake Control Module (EBCM) turns ON the ABS ACTIVE by grounding CKT 34A/B. When the ignition switch is turned to the ON position, the EBCM turns ON the ABS ACTIVE indicator for 3 seconds for a bulb check. Whenever the vehicle is involved in an ABS event, the EBCM tuns ON the ABS ACTIVE indicator for the duration of the event (and 1-2 seconds after the event), notifying the driver that ABS is in operation.

Diagnostic Aids
The following list contains items that need to be inspected when diagnosing this system:
^ Open GAUGE fuse.
^ Open bulb filament.
^ Open within I/P gage printed circuit.
^ Faulty EBCM.
Inspect the following harness connectors 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 before component replacement:
^ EBCM connector C1.
^ I/P cluster C1 and C3.



Test Description
The numbers below refer to step numbers on the diagnostic table.
3. Checks the ABS ACTIVE circuit and bulb.
5. Checks for power to the I/P gage cluster.
6. Checks the integrity of the indicator control circuit.
7. Checks the ability of the EBCM to control the ABS ACTIVE lamp when commanded by a Tech 2 scan tool.
17. Checks for proper indicator operation.