Endeavor V6-3.8L SOHC (2004)
NO : Repair or replace the component(s). Refer to Harness Connector Inspection. Confirm that scan tool MB991958 communicates normally.
STEP 9. Check the wiring harness between immobilizer-ECU connector C-39 (terminal 3) and PCM connector B-18 (terminal 13).
Q: Are the wiring harness between immobilizer-ECU connector C-39 (terminal 3) and PCM connector B-18 (terminal 13) in good condition?
YES : Go to Step 10.
NO : Repair the wiring harness. Confirm that scan tool MB991958 communicates normally.
STEP 10. Replace the immobilizer-ECU or PCM. Replace the immobilizer-ECU or PCM.
Q: Did the communication with the scan tool become possible after replacing the immobilizer-ECU or the PCM?
YES : Register the password (secret code) and encrypted code P.54A-59.
NO : Replace the PCM. 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).
Inspection Procedure 2
The Ignition Key cannot be Registered
TECHNICAL DESCRIPTION (COMMENT)
The ignition key transponder or the immobilizer-ECU is suspected to be defective.
TROUBLESHOOTING HINTS
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Malfunction of the ignition key
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Malfunction of immobilizer-ECU
DIAGNOSIS
Required Special Tools:
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MB991958: Scan Tool (MUT-III Sub Assembly)
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MB991824: Vehicle Communication Interface (V.C.I.)
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MB991827: MUT-III USB Cable
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MB991910: MUT-III Main Harness A (Vehicles with CAN communication system)
STEP 1. Using scan tool MB991958, read the diagnostic trouble code.
CAUTION: To prevent damage to scan tool MB991958, always turn the ignition switch to "LOCK" (OFF) position before connecting or