Immobilizer Indicator Light Remains ON after Engine Starts

Immobilizer Indicator Light Remains ON after Engine Starts

Wiring Diagram

Refer to Immobilizer Control System Wiring Circuit Diagram Immobilizer Control System Wiring Circuit Diagram.

Circuit Description

Refer to Immobilizer Indicator Light Does Not Come ON with Ignition Switch ON and Engine Stop Immobilizer Indicator Light Does Not Come ON with Ignition Switch ON and Engine Stop.

Troubleshooting

1. DTC check

Check DTC referring to DTC Check DTC Check.

Is DTC P1645 or P1646 detected?
YES -
Go to applicable DTC troubleshooting.
NO -
Substitute a known-good combination meter and recheck. If still indicator light remains ON, substitute a known-good ECM and recheck.