SECURITY LIGHT 23, DTC B2139/P1260 [IMMOBILIZER SYSTEM (ADVANCED KEYLESS AND START SYSTEM)]


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


Diagnostic Procedure

STEP

INSPECTION

ACTION

1
VERIFY DTC
•  Are either U0100 or U0073, or both, displayed by the keyless control module?
Yes
Perform troubleshooting according to the corresponding DTC inspection.
No
Go to the next step.
2
EXAMINE KEYLESS CONTROL MODULE 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 keyless control module and perform the resetting procedure for the immobilizer system when replacing the keyless control module.
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 resetting procedure for the immobilizer system when replacing the PCM.
No
DTC troubleshooting completed.