Endeavor V6-3.8L SOHC (2004)
STEP 1. Check immobilizer-ECU connector C-39 for loose, corroded or damaged terminals, or terminals pushed back in the connector
Q: Is immobilizer-ECU connector C-39 in good condition?
YES : Go to Step 2.
NO : Repair or replace the component(s). Refer to Harness Connector Inspection. Confirm that scan tool MB991958 communicates normally.
STEP 2. Check the immobilizer indicator light circuit of immobilizer-ECU connector C-39.
1. Disconnect the immobilizer-ECU connector C-39 and measure at the harness side.
2. Turn the ignition switch to the "ON" position.
3. Connect terminal 1 to the ground.
Q: Does only the immobilizer indicator light illuminate? (other indicator lights are in good condition)
YES : Replace the immobilizer-ECU. Then register the password (secret code) and encrypted code P.54A-59.
NO : Go to Step 3.
STEP 3. Check immobilizer-ECU connector C-39 and combination meter connector C-102 for loose, corroded or damaged terminals, or
terminals pushed back in the connector.
