SECURITY LIGHT: 22, DTC: B2141/P1260/P1260:00 [IMMOBILIZER SYSTEM (ADVANCED KEYLESS ENTRY AND START SYSTEM)]

id09021h002500

SECURITY LIGHT: 22 | Communication error between the keyless control module and the PCM (data transfer error)
DTC: B2141/P1260/P1260:00
DETECTION CONDITION | Communication error between the keyless control module and the PCM (data transfer error)
POSSIBLE CAUSE | • Malfunction in the wiring harness (CAN line) between the keyless control module and 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 | 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/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 [ADVANCED KEYLESS ENTRY AND START SYSTEM].) Go to the next step.
No | DTC troubleshooting completed.
3 | EXAMINE KEYLESS CONTROL MODULE AND PCM • Is the DTC displayed again? ― Security light: 22 ― M-MDS B2141/P1260/P1260:00 | Yes | Replace the keyless control module and perform the resetting procedure for the immobilizer system when replacing the keyless control module. (See KEYLESS CONTROL MODULE REMOVAL/INSTALLATION [ADVANCED KEYLESS ENTRY AND START SYSTEM].) (See IMMOBILIZER SYSTEM COMPONENT REPLACEMENT/KEY ADDITION AND CLEARING [ADVANCED KEYLESS ENTRY AND START SYSTEM].)
No | DTC troubleshooting completed.