FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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Fault Conditions




Internal Control Module. Malfunction.







Fault symptoms
- CHECK ENGINE.
- Engine will not start.

On-Board Diagnostics
Type of diagnosis:

- Once per driving cycle. Interrupted when fault criteria fulfilled or OK reported. Restarts next driving cycle.

Enable criteria:
- Ignition in ON position.

Fault criteria:
- Flash memory checksum error.

Dependents:
- None.

System reaction to a fault:
- Fuel shut-off.

OK report:
- Flash memory checksum correct.

Fault handling: Fault Handling III, Other Emission-Related Component & Function
- Type III.


Diagnostic help
Flash memory incorrectly programmed, which means that the control module must be changed unless it can be reprogrammed.

Proceed to Diagnostic Procedures Resetting the Limp-Home Mechanism