UPDATE:
The MIL turned off on it's own prior to any troubleshooting done.
Troubleshooting steps that have been taken so far.
Going to give it a week or so of normal driving then check for DTCs in the powertrain module and go from there.
The MIL turned off on it's own prior to any troubleshooting done.
Troubleshooting steps that have been taken so far.
- Tested Battery for health. Pre-start voltage, voltage drop during crank, and a load test. It passed all three. (battery rated at 700CCA tested at 615CCA).
- Tested charging system health. 14.4 V at battery nd 14.5V at alternator output.
- Removed battery and air box to inspect wiring.
- Two grounding points on the chassis, were inspected, removed, cleaned and reconnected testing for resistance and voltage drop across the connection.
- Battery terminals had light corrosion (white powder) and were cleaned.
- Transmission harness was inspected for damage. None found.
- Resistance readings and test for voltage drop checked from PCM/TCM connector to trans connector. (all voltage drop tests were done while wiring was static and during manipulation. All checks out.
- Found wiring repair done with scotch blocks to driver side High Beam headlamp. Will be checking system and properly repairing the wiring at a future date.
- Inspected TIPM for obvious signs of damage/failure.
Going to give it a week or so of normal driving then check for DTCs in the powertrain module and go from there.