FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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Component Inspection





P0650 Malfunction Indicator Lamp (MIL) Control Circuit

Inspection/Repair - Component Inspection

Component Inspection

1. Key "OFF".
2. Disconnect ECM connector.
3. Short terminal 51 of PCM harness connector to Ground. [A/T]
Short terminal 70 of ECM harness connector to Ground. [M/T]
A. Specification : MIL ON.












4. Is the Engine MIL lamp lighting normally?
YES
1) Substitute with a known-good ECM and check for proper operation. If the problem is corrected,replace ECM and then 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 PCM.
Before or after testing PCM on the vehicle, use this function to reuse the PCM on the others

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