GM Service Manual Online
For 1990-2009 cars only

Circuit Description

This fault code may happen when the resetting procedure is not practiced in case of line assembling or servicing the hydraulic control module (HCM).

Conditions for Running the DTC

This fault code is not the fault and there is no cause in the system.

Conditions for Setting the DTC

The warning lamp is ON.

Action Taken When the DTC Sets

The antilock brake system (ABS) is disabled and the ABS warning lamp is turned ON. The proportioning is operation.

The proportioning function is OK.

Diagnostic Aids

The system is OK when the fault code is cleared with the scan tool.

Step

Action

Yes

No

Schematic Reference: Antilock Brake System Schematics

Connector End View Reference: Antilock Brake System Connector End Views

1

Does this vehicle experience the ABS operation?

Go to Step 3

Go to Step 2

2

This fault code is not the fault.

System OK

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3

Does the brake system bleed and refill the brake fluid?

Go to Step 5

Go to Step 4

4

Bleed the brake system and refill the brake fluid.

Is the repair complete?

System OK

--

5

  1. Bleed the brake system and refill the brake fluid again.
  2. Clear the fault code with the scan tool.

Is the repair complete?

System OK

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