Component Inspection

Engine

Engine Control - P0650 Malfunction Indicator Lamp (MIL) Control Circuit - Component Inspection

Component Inspection

Check instrument cluster
1. IG "OFF"
2. Substitute with a known - good instrument cluster and check for proper operation.
3. Does it normally operate after replacement?
YES
1) Replace instrument cluster and go to "Verification of Vehicle Repair" procedure.
NO
1) Substitute with a known - good PCM and check for proper operation.
If the problem is corrected, replace PCM and go to "Verification of Vehicle Repair" procedure.

NOTE:
There is a memory reset function on scantool that can erase optional parts automatically detected and memorized by PCM. After testing PCM on the vehicle, use this function to reuse the PCM on the others