Transponder Lock Check

WARNING: This page is about a different car, the 2004 Mitsubishi Eclipse. However, it is still accessible from the selected car via links, so may be relevant.

Required Special Tools:

MB991958: Scan Tool (MUT-III Sub Assembly)

MB991824: Vehicles Communication Interface (V.C.I.)

MB991827: MUT-III USB Cable

MB991911: MUT-III Main Harness B (Vehicles without 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.

Fig 1: Connecting Scan Tool MB991958 To Data Link Connector
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Select "Interactive Diagnosis" from the start-up screen.

Fig 2: Selecting "Interactive Diagnosis" From Start-Up Screen
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Select "System select."

Fig 3: Selecting "System Select "
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Choose "IMMOBILIZER" from the "POWER TRAIN" tab.

Fig 4: Choosing "Immobilizer" From "Power Train" Tab
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Select "Data List."

Fig 5: Selecting "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.

IGNITION KEY JUDGEMENT

TP LOCK CHECK	IGNITION KEY:	JUDGMENT OF IGNITION KEY
UNLOCK	Can be overwritten	Correct
LOCK	Can not be overwritten	Incorrect

Fig 6: Data List Screen

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.