Transponder Lock Check

Required Special Tools:

MB991958: Scan Tool (MUT-III Sub Assembly)
- MB991824: Vehicle Communication Interface (V.C.I.)
- MB991827: MUT-III USB Cable
- MB991910: MUT-III Main Harness A (Vehicles with CAN communication system)

CAUTION: To prevent damage to scan tool MB991958, always turn the ignition switch to "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958.

Follow the procedure below to judge if the ignition key can be overwritten (i.e. the ignition key is correct) or not.

Connect the scan tool MB991958 to the data link connector.
Turn the ignition switch to "ON" position.
Select "Interactive Diagnosis" from the start-up screen.

Fig 1: Connecting Scan Tool MB991958 To Data Link Connector
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Select "System select."

Fig 2: Scan Tool Display Function Select Menu
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Choose "IMMOBILIZER" from the "POWER TRAIN" tab.

Fig 3: Scan Tool Display Immobilizer
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Select "Data List."

Fig 4: Scan Tool Display Data List
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
The multi-center display shows whether the ignition key, which has been inserted in the switch, can be rewritten and how many ignition keys have ever been registered.

Fig 5: Scan Tool Display Data List
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Fig 6: Ignition Key Function Chart
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.