C1211

CIRCUIT DESCRIPTION
The ABS Indicator driver circuit runs from the Instrument Panel Cluster (IPC) through the Lamp Driver Module (LDM) to the Electronic Brake Control Module/Electronic Brake Traction Control Module (EBCM/EBTCM). The IPC supplies voltage to the ABS indicator. The EBCM/EBTCM controls the ABS indicator through the LDM. The LDM acts as an invertor; when the EBCM/EBTCM supplies a ground for the LDM, the indicator remains off. When the EBCM/EBTCM removes the ground for the LDM, the indicator turns on by using the ground at the LDM terminal D.

CONDITIONS FOR SETTING THE DTC
EBCM/EBTCM commands the ABS indicator on and either an open, a short to ground, or a short to voltage is detected in CKT 852.

ACTION TAKEN WHEN THE DTC SETS
The Diagnostic Trouble Code (DTC) is stored, but the ABS is not disabled.

CONDITIONS FOR CLEARING THE MIL/DTC
^ The condition for DTC is no longer present and the scan tool clear DTC function is used.
^ 50 ignition cycles have passed with no DTCs detected.

DIAGNOSTIC AIDS
Perform a thorough inspection of the wiring and connectors. Failure to carefully and fully inspect wiring and connectors may result in misdiagnosis, causing part replacement with reappearance of the malfunction.

TEST DESCRIPTION
The number(s) below refer to the step number(s) on the diagnostic table.
2. This step checks if CKT 852 is shorted to voltage.
4. This step checks if CKT 852 is shorted to ground.
6. This step checks for an open in CKT 852.