Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
2008 Audi Q7 cranks but no start, although it did once after about an hour of trying. Only ran for about 5 minutes then died again, Using an Autel ultra for code reading and diagnosing, All codes were due to low voltage so I charged the battery and cleared codes. The issue i seem to be having is no ground signal from the ECM to the engine control relay, relay is not switching so no power to those fuses. External grounds into the ecm check out good using a power probe, Tried new ecm and same result, although i seem to be having an issue programming the new ecm to the car I expected at least to get a different result in the ground signal issue, but no luck so far. Any help or ideas would be greatly appreciated.
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