GM Service Manual Online
For 1990-2009 cars only

Object Number: 397532  Size: MF
ABS Components
Cell 44: Traction Control Switch and PCM
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Cell 50: Class 2 Serial Data Line
Cell 14: G202 (CKT 351 1 of 2)

Circuit Description

The instrument cluster turns the ABS indicator ON during the instrument cluster bulb check for approximately 3 seconds when the ignition switch is turned to the RUN position. If the EBCM/EBTCM sets a DTC, the EBCM/EBTCM sends the instrument cluster the command to turn the ABS indicator ON.

Test Description

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

  1. This step tests if the instrument cluster has the ability to turn the ABS indicator ON.

Step

Action

Value(s)

Yes

No

DEFINITION: The ABS indicator does not come ON during the instrument cluster bulb check.

1

Was the ABS Diagnostic System Check performed?

--

Go to Step 2

Go to Diagnostic System Check - ABS

2

Using a scan tool in ABS/TCS Special Functions, attempt to turn the ABS indicator ON.

Did the ABS indicator turn ON?

--

Go to Step 3

Go to Step 4

3

Replace the EBCM/EBTCM. Refer to Electronic Brake Control Module Replacement .

Is the repair complete?

--

Go to Diagnostic System Check - ABS

--

4

Replace the instrument cluster. Refer to Instrument Cluster Replacement in Instrument Panel, Gauges and Console.

Is the repair complete?

--

Go to Diagnostic System Check - ABS

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