P0670 - Glow Plug Control Module (GPCM) Control Circuit/Open
WARNING: This page is about a different car, the 2008 Ford Pickup, 2008 Ford F550 Super Duty, 2008 Ford F450 Super Duty, and 2008 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
P0670 - GLOW PLUG CONTROL MODULE (GPCM) CONTROL CIRCUIT/OPEN
| Description: | The powertrain control module (PCM) carries out a functional key ON, engine running (KOER) self-test for the glow plug system. During that test the PCM enables the GPCM which monitors glow plug control circuit for concerns. When the GPCM detects a concern with a glow plug control circuit, it sends a message to the PCM, which sets this DTC. | |||
| Possible Causes: |
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| Diagnostic Aids: | Check the wiring harness for an open or a short circuit. | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory | |
| All | refer to PINPOINT TEST AF . | |||