For 1990-2009 cars only
Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category |
Circuit/System Description
The body control module (BCM) monitors the cruise control indicator switch. When the cruise on/off switch is pressed ON, the cruise control switch is closed and the signal circuit is low. The BCM sends a serial data message to the instrument panel cluster (IPC) indicating the status of the cruise control switch.
Reference Information
Schematic Reference
Connector End View Reference
Description and Operation
Cruise Control Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
- Ignition ON, perform the Display Test. Verify the cruise control indicator illuminated.
- Replace the BCM.
| ⇒ | If the indicator does not illuminate, replace the IPC. |
Repair Instructions
Perform the Diagnostic Repair Verification.
| • | Control Module References for ECM or IPC replacement, setup, and programming. |
