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MIL Remains ON after Engine Starts: Troubleshooting

NOTE: When measuring circuit voltage and/or pulse signal at ECM connector, connect special tool to ECM and ECM connectors. See Inspection of ECM and Its Circuits 
DIAGNOSIS PROCEDURE

Step Action YES NO
1  DTC check 
  1. Start engine and recheck DTC of ECM and TCM while engine running.

Is there any DTC(s)? 		 Go to troubleshooting for applicable DTC. Substitute a known-good combination meter and recheck. If MIL still remains ON, substitute a known-good ECM and recheck.
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