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Home >> Cadillac >> 2005 >> DeVille Protection Series >> Repair and Diagnosis >> Brakes >> Antilock Brake System, Traction Control System & Stability Control System >> Diagnostic Information and Procedures >> ABS Indicator Inoperative >> Test Description

Test Description

The numbers below refer to the step numbers on the diagnostic table.

  1. 3:  Use the scan tool to check the normal state of the ABS indicator control circuit.
  2. 4:  This step ensures that the IPC can operate the ABS indicator.
ABS Indicator Inoperative

Step Action Yes No
Schematic Reference: ABS Schematics 
Connector End View Reference: ABS Connector End Views  or Instrument Panel, Gages, and Console Connector End Views in Instrument Panel, Gages, and Console
1 Did you perform the Diagnostic System Check - Vehicle? Go to Step 2  Go to Diagnostic System Check - Vehicle in Vehicle DTC Information
2 Inspect the electronic brake control module (EBCM) ground, making sure the ground is clean and torqued to the proper specification. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 9  Go to Step 3 
3 
  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. With a scan tool, observe the ABS Warning Indicator parameter in the DRP/ABS/TCS data list.
Does the scan tool display Off?		 Go to Step 4  Go to Step 5 
4 
  1. Turn OFF the ignition.
  2. Turn ON the ignition, with the engine OFF.
  3. Observe the ABS indicator on the instrument panel cluster (IPC) during the bulb check.
Does the ABS indicator illuminate during the bulb check and then turn OFF?		 Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems Go to Step 6 
5 Inspect for poor connections at the harness connector of the EBCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 9  Go to Step 7 
6 Inspect for poor connections at the harness connector of the IPC. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 9  Go to Step 8 
7 Replace the EBCM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.
Did you complete the replacement?		 Go to Step 9  -
8 Replace the IPC. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.
Did you complete the replacement?		 Go to Step 9  -
9 Operate the system in order to verify the repair.
Did you correct the condition?		 System OK Go to Step 2 
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