SECURITY LIGHT 23, DTC B2139/P1260 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]

id0902e5801500

SECURITY LIGHT: 23	ID number data in the PCM and the instrument cluster do not match
DTC: B2139/P1260
DETECTION CONDITION	ID number data in the instrument cluster and the PCM are different
POSSIBLE CAUSE	•  Necessary procedures were not performed using the M-MDS after replacing 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.
		No	Go to the next step.
2	EXAMINE INSTRUMENT CLUSTER AND PCM •  Perform procedures for when replacing the PCM only. (See IMMOBILIZER SYSTEM COMPONENT REPLACEMENT/KEY ADDITION AND CLEARING [KEYLESS ENTRY SYSTEM].) •  Using the registered key, turn the ignition switch to the ON position. •  Is the DTC displayed? ―  Security light: 23 ―  M-MDS: B2139/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 COMPONENT REPLACEMENT/KEY ADDITION AND CLEARING [KEYLESS ENTRY 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	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 [KEYLESS ENTRY SYSTEM].)
		No	DTC troubleshooting completed.