SECURITY LIGHT 23, DTC B2139/P1260 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]


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SECURITY LIGHT: 23
ID number data in the PCM and the instrument cluster do not match.
DTC: B2139/P1260
DETECTION CONDITION
•  ID number data in the instrument cluster and the PCM are different.
POSSIBLE CAUSE
•  Necessary procedures were not performed using the M-MDS after replacing the PCM.
•  Instrument cluster malfunction
•  PCM malfunction


Diagnostic Procedure

STEP

INSPECTION

ACTION

1
VERIFY DTC
•  Are either U0100 or U0073, or both, displayed by the instrument cluster?
Yes
Perform troubleshooting according to the corresponding DTC inspection.
No
Go to the next step.
2
EXAMINE INSTRUMENT CLUSTER AND PCM
•  Perform procedures for when replacing the PCM only.
•  Using the registered key, turn the ignition switch to the ON position.
•  Is the DTC displayed?
―  Security light: 23
―  M-MDS: B2139/P1260
Yes
•  Replace the instrument cluster and perform the programming for the immobilizer system-related parts.
•  Go to the next step.
No
DTC troubleshooting completed.
3
VERIFY DTC
•  Is the DTC displayed again?
―  Security light: 23
―  M-MDS: B2139/P1260
Yes
•  Replace the PCM and perform the programming for the immobilizer system-related parts.
No
DTC troubleshooting completed.