Component Inspection

Component Inspection

1. 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
- Replace instrument cluster and go to "Verification of Vehicle Repair" procedure.
NO
- Substitute with a known-good ECM and check for proper operation. If the problem is corrected, replace ECM and go to "Verification of Vehicle Repair" procedure.

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