SECURITY LIGHT: 23, DTC B2139/P1260

id0902e4904000

SECURITY LIGHT: 23	ID number data in the PCM and the keyless unit do not match.
DTC: B2139/P1260
DETECTION CONDITION	•  ID number data in the keyless unit and the PCM are different.
POSSIBLE CAUSE	•  Necessary procedures were not performed using the WDS or equivalent after replacing the PCM. •  Keyless unit malfunction •  PCM malfunction

Diagnostic Procedure

STEP	INSPECTION		ACTION
1	VERIFY DTC USING WDS OR EQUIVALENT •  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	•  Perform procedures for when replacing the PCM only. (See IMMOBILIZER SYSTEM COMPONENT REPLACEMENT/KEY ADDITION AND CLEARING.) (See IMMOBILIZER SYSTEM COMPONENT REPLACEMENT/KEY ADDITION AND CLEARING [ADVANCED KEYLESS SYSTEM].) •  Using the registered key, turn the ignition switch to the ON position. •  Is the DTC displayed? ―  SECURITY LIGHT: 23 ―  WDS or equivalent: B2139/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.) (See IMMOBILIZER SYSTEM COMPONENT REPLACEMENT/KEY ADDITION AND CLEARING [ADVANCED KEYLESS SYSTEM].) •  Go to the next step.
		No	DTC troubleshooting completed.
3	•  Are any or all of the following DTCs displayed again? ―  SECURITY LIGHT: 23 ―  WDS or equivalent: B2139/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.) (See IMMOBILIZER SYSTEM COMPONENT REPLACEMENT/KEY ADDITION AND CLEARING [ADVANCED KEYLESS SYSTEM].)
		No	DTC troubleshooting completed.