B1000 35 - 06

B1000 35

Control Module. Internal Fault







Fault symptom
- "On Star System Malfunction. Contact Service." shown on SID.

On-board diagnosis

Type of diagnosis:
- Continuous

Enable criteria:
- Ignition ON.

Fault criteria:
- Control module on-board diagnostics has detected a ROM error.

Diagnostic help
- Replace ECU
- See "Procedure for control module replacement"

- Check that the following MIs/Campaigns have been carried out before starting fault diagnosis:

US Market
- MI No. 391-2394 - Customer Satisfaction Campaign 15421 - Update of OnStar system.
- MI No. 391-2409 - Customer Satisfaction Campaign 15424 - Update of OnStar system.

CA Market
- MI No. 391-2410 - Customer Satisfaction Campaign 15421 - Update of OnStar system.
- MI No. 391-2408 - Customer Satisfaction Campaign 15424 - Update of OnStar system.

Diagnostic help

Diagnosis regards:
- To locate electrical faults in the control module internal electronics.

Functions in the diagnostic tool related to the fault:
- See menu "All - Add/Remove"