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

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SECURITY LIGHT: 22

Communication error between the keyless control module and the PCM (data transfer error)

DTC: B2141/P1260

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

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 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

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 SYSTEM].)

(See IMMOBILIZER SYSTEM COMPONENT REPLACEMENT/KEY ADDITION AND CLEARING [ADVANCED KEYLESS SYSTEM].)

No

DTC troubleshooting completed.

SECURITY LIGHT: 22	Communication error between the keyless control module and the PCM (data transfer error)
DTC: B2141/P1260
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

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.
1		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 PCM REMOVAL/INSTALLATION [MZI-3.7].) (See IMMOBILIZER SYSTEM COMPONENT REPLACEMENT/KEY ADDITION AND CLEARING [ADVANCED KEYLESS SYSTEM].) Go to the next step.
2		No	DTC troubleshooting completed.
3	EXAMINE KEYLESS CONTROL MODULE AND PCM • Is the DTC displayed again? ― Security light: 22 ― M-MDS B2141/P1260	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 SYSTEM].) (See IMMOBILIZER SYSTEM COMPONENT REPLACEMENT/KEY ADDITION AND CLEARING [ADVANCED KEYLESS SYSTEM].)
3		No	DTC troubleshooting completed.