SECURITY LIGHT: 23, DTC B2139/P1260 [IMMOBILIZER SYSTEM]

id0902e4904000

SECURITY LIGHT: 23	ID number data in the PCM and the keyless control module do not match.
DTC: B2139/P1260
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 USING M-MDS •  Are either U1900 or U0073, or both, displayed, by either the keyless control module or the PCM, or both.	Yes	Perform troubleshooting according to the corresponding DTC inspection.
		No	Go to the next step.
2	•  Perform procedures for when replacing the PCM only. (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [WITH 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 keyless control module and perform procedures for when replacing the keyless control module only. (See KEYLESS CONTROL MODULE REMOVAL/INSTALLATION.) (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [WITH KEYLESS ENTRY SYSTEM].) •  Go to the next step.
		No	DTC troubleshooting completed.
3	•  Are any or all of the following DTCs displayed again? ―  SECURITY LIGHT: 23 ―  M-MDS: B2139/P1260	Yes	•  Replace the PCM and perform procedures for when replacing the PCM only. (See PCM REMOVAL/INSTALLATION [13B-MSP].) (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [WITH KEYLESS ENTRY SYSTEM].)
		No	DTC troubleshooting completed.