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2000 Dodge Ram 1500 Laramie 5.9L MIL Lamp on, No bus VIN: 1B7HF13Z7Y
I concluded that there was an issue with the CCD wiring between PCM and MIC, even though every test showed these circuits to be electrically ok. Special thanks to Charles from California for suggesting that the CCD+ and CCD- circuits must have matching resista... Trouble codes: P1687 (Pcm not receiving bus message from cluster).
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