Bad PCM?
#1
12-12-2012 | 12:00 PM
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Bad PCM?
Replaced my Glow Plug Control Module and harness's and still have trouble starting my truck unless the oil heater is plugged in. Not sure of the exact location of the PCM but I have DTC codes P0670 and P0683. From what I understand the P0670 can cause the P0683 so I may have started backwards. Help would be greatly appreiciated! Thanks!
#2
12-12-2012 | 12:25 PM
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Joined: Oct 2007
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P0683 — GPCM glow plug control modulecommunication line failure. Open/shorted circuit, failed GPCM, failed PCM
P0670 — GPCM Glow plug control module control line failure. Open/grounded circuit, open/shorted GPCM, failed PCM
Have you checked the glow plug relay by chance?
P0670 — GPCM Glow plug control module control line failure. Open/grounded circuit, open/shorted GPCM, failed PCM
Have you checked the glow plug relay by chance?
Last edited by Mdub707; 12-12-2012 at 05:06 PM.
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