Immobilizer Indicator Lamp Remains On After Engine Start: Troubleshooting

TROUBLESHOOTING CHART

Step	Action	YES	NO
1	Diagnostic Trouble Code (DTC) check Start engine. Check if any DTC is detected by ECM referring to DIAGNOSTIC TROUBLE CODE (DTC) CHECK . Is any DTC detected?	Go to applicable DTC diagnostics.	Go to Step 2.
2	CAN communication wire circuits check Check CAN communication wire circuits between combination meter and ECM referring to DTC U0073: CONTROL MODULE COMMUNICATION BUS OFF . Are wire circuits in good condition?	Replace combination meter with a known-good one and recheck. If the immobilizer indicator lamp remains OFF, replace ECM with a known-good one and recheck.	Repair the faulty wire circuit.