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SECURITY LIGHT: 22, DTC B2141/P1260

BHE090201077W14

SECURITY LIGHT: 22 | Communication error between the keyless unit and the PCM (data transfer error)
DTC: B1241/P1260
DETECTION CONDITION | • Communication error between the keyless unit and the PCM (data transfer error)
POSSIBLE CAUSE | • Malfunction in the wiring harness (CAN line) between the keyless unit and the PCM • Keyless unit malfunction • PCM malfunction

## Diagnostic Procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | VERIFY DTC USING WDS • Are either U1900 or U0073, or both displayed, by either the keyless unit or the PCM, or both? | Yes | Perform troubleshooting according to the corresponding DTC inspection. (See DTC U0073, U1900, U2516.)
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 – WDS: B2141/P1260 | Yes | • Perform procedures for when replacing the PCM only. (See IMMOBILIZER SYSTEM COMPONENT REPLACEMENT/KEY ADDITION AND CLEARING.) • Go to the next step.
No | DTC troubleshooting completed.
3 | EXAMINE KEYLESS UNIT AND PCM • Is the DTC displayed again? – SECURITY LIGHT: 22 – WDS: B2141/P1260 | Yes | • Replace the keyless unit and perform procedures for when replacing the keyless unit only. (See KEYLESS UNIT REMOVAL/INSTALLATION.) (See IMMOBILIZER SYSTEM COMPONENT REPLACEMENT/KEY ADDITION AND CLEARING.) • Go to the next step.
No | DTC troubleshooting completed.
4 | EXAMINE PCM • Is the DTC displayed again? – SECURITY LIGHT: 22 – WDS: B2141/P1260 | Yes | • Replace the PCM and perform procedures for when replacing the PCM only. (See PCM REMOVAL/INSTALLATION.) (See IMMOBILIZER SYSTEM COMPONENT REPLACEMENT/KEY ADDITION AND CLEARING.)
No | DTC troubleshooting completed.