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

id09021h002600

SECURITY LIGHT: 23	ID number data in the PCM and the keyless control module do not match
DTC: B2139/P1260/P1260:00
DETECTION CONDITION	ID number data in the keyless control module and the PCM are different
POSSIBLE CAUSE	•  Necessary procedures were not performed using the M-MDS after replacing 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	EXAMINE KEYLESS CONTROL MODULE AND PCM •  Perform procedures for when replacing the PCM only. (See IMMOBILIZER SYSTEM COMPONENT REPLACEMENT/KEY ADDITION AND CLEARING [ADVANCED KEYLESS ENTRY AND START 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 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].) 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 [ADVANCED KEYLESS ENTRY AND START SYSTEM].)
		No	DTC troubleshooting completed.