Glow Plug System: Testing and Inspection

Glow Plug Control Module Scan Tool Information (LMM)

The GPCM Scan Tool Data List contains all glow plug control module related parameters that are available on the scan tool. The list is arranged in alphabetical order.

Use the GPCM Scan Tool Data List only after the following is determined:

* The Diagnostic System Check - Vehicle is completed.
* No diagnostic trouble codes (DTCs) are present.
* The on-board diagnostics are functioning properly.

Scan tool values from a properly running engine may be used for comparison with the engine you are diagnosing. The GPCM Scan Tool Data List represents values that would be seen on a normal running engine.

Important: A scan tool that displays faulty data should not be used. The scan tool problem should be reported to the manufacturer. Use of a faulty scan tool can result in misdiagnosis and unnecessary parts replacement.