Endeavor V6-3.8L SOHC (2004)
1. Connect scan tool MB991958 to the data link connector.
2. Turn the ignition switch "ON" position.
3. Read the diagnosis code.
Q: Have any MFI system DTCs set?
YES : Refer to MFI Diagnosis - Diagnostic Trouble Code Chart.
NO : Go to Step 4.
STEP 4. Attempt to start the engine.
Q: Does the engine start?
YES : The procedure is complete (If no malfunctions are found in all steps, an intermittent malfunction is suspected. Refer to How to Use
Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction).
NO : Refer to MFI Diagnosis - Symptom Chart. If the malfunction is not resolved, replace the immobilizer-ECU. Then register the password (secret
code) and encrypted code. (Refer to Accessories and Optional Equipment/Antitheft and Alarm Systems/Service and Repair/Procedures/How to
Register Encrypted Code.) The engine should now start.
Built Before December 2003
The Immobilizer Indicator Light does not Illuminate. <UP TO DECEMBER 2003>
