SECURITY LIGHT: 23, DTC: B2139/P1260/P1260:00 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]

id0902e5002600

SECURITY LIGHT: 23 | ID number data in the PCM and the instrument cluster do not match
DTC: B2139/P1260/P1260:00
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 U1900 or U0073, or both, displayed by either the instrument cluster or the PCM, or both? | 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. (See IMMOBILIZER SYSTEM COMPONENT REPLACEMENT/KEY ADDITION AND CLEARING [KEYLESS ENTRY SYSTEM].) • Using the registered key, turn the ignition switch to the ON position. • Is the DTC displayed? ― Security light: 23 ― M-MDS: B2139/P1260/P1260:00 | Yes | Replace the instrument cluster and perform the resetting procedure for the immobilizer system when replacing the instrument cluster. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.) (See IMMOBILIZER SYSTEM COMPONENT REPLACEMENT/KEY ADDITION AND CLEARING [KEYLESS ENTRY SYSTEM].) Go to the next step.
No | DTC troubleshooting completed.
3 | VERIFY DTC • Is the DTC displayed again? ― Security light: 23 ― M-MDS: B2139/P1260/P1260:00 | Yes | Replace the PCM and perform the resetting procedure for the immobilizer system when replacing the PCM. (See PCM REMOVAL/INSTALLATION [MZI-3.7].) (See IMMOBILIZER SYSTEM COMPONENT REPLACEMENT/KEY ADDITION AND CLEARING [KEYLESS ENTRY SYSTEM].)
No | DTC troubleshooting completed.