SECURITY LIGHT 22, DTC B2141/P1260 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]

id0902e5801400

DTC | Security light flashing pattern | 22 | Communication error between the instrument cluster and the PCM (data transfer error)
--- | --- | --- | ---
M-MDS display | Instrument cluster | B2141
PCM | P1260
POSSIBLE CAUSE | • Malfunction in the wiring harness (CAN line) between the instrument cluster and 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. (See FOREWORD [MULTIPLEX COMMUNICATION SYSTEM (L.H.D.)].) (See FOREWORD [MULTIPLEX COMMUNICATION SYSTEM (R.H.D.)].)
No | Go to the next step.
2 | VERIFY DTC • Using the registered key, turn the ignition switch to the ON position. • Is the DTC displayed? ― Security light: 22 ― M-MDS: B2141/P1260 | Yes | • Replace the PCM and perform the resetting procedure for the immobilizer system when replacing the PCM. (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING.) • Go to the next step.
No | DTC troubleshooting completed.
3 | EXAMINE INSTRUMENT CLUSTER AND PCM • Is the DTC displayed again? ― Security light: 22 ― M-MDS: B2141/P1260 | 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-RELATED PARTS PROGRAMMING.) • Go to the next step.
No | DTC troubleshooting completed.
4 | EXAMINE PCM • Is the DTC displayed again? ― Security light: 22 ― M-MDS: B2141/P1260 | Yes | • Replace the PCM and perform the resetting procedure for the immobilizer system when replacing the PCM. (See PCM REMOVAL/INSTALLATION [L8, LF].) (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING.)
No | DTC troubleshooting completed.