GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2006 🢒 SSR 🢒 Brakes 🢒 Antilock Brake System 🢒 Traction Off Indicator Always On

Circuit Description

The instrument panel cluster (IPC) illuminates the Traction Off indicator by supplying ground to the lamp. The electronic brake control module (EBCM) sends serial data messages to the IPC to command the indicator ON or OFF.

Diagnostic Aids

The malfunction must be present during diagnosis in order to prevent unnecessary parts replacement. Always begin diagnosis with Diagnostic System Check - Vehicle .

Test Description

The number below refers to the step number on the diagnostic table.

  1. This step tests if the IPC is able to turn OFF the Traction Off indicator.

Step

Action

Yes

No

Schematic Reference: Antilock Brake System Schematics

Connector End View Reference: Antilock Brake System Connector End Views

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

2
  1. Turn OFF the ignition for 5 seconds.
  2. Turn ON the ignition while observing the Traction Off indicator.

Does the Traction Off indicator illuminate for approximately 2 seconds and then turn OFF?

Go to Diagnostic Aids

Go to Step 3

3

  1. Select the Instrument Panel Cluster (IPC) Special Functions menu on the scan tool.
  2. Select Lamp Tests.
  3. Command the IPC indicator lamps OFF.

Does the Traction Off indicator turn OFF?

Go to Step 5

Go to Step 4

4

Replace the IPC. Refer to Control Module References for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 6

--

5

Replace the electronic brake control module (EBCM). Refer to Control Module References for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 6

--

6
  1. Turn OFF the ignition for 5 seconds.
  2. Turn ON the ignition while observing the Traction Off indicator.

Does the Traction Off indicator illuminate for approximately 2 seconds and then turn OFF?

System OK

Go to Step 3