SECURITY LIGHT: 15, DTC: B10D7:51/P1260:00 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]

id0902e5356700

DTC	Security light flashing pattern		15	Key ID number error
	M-MDS display	Instrument cluster	B10D7:51
		PCM	P1260:00
DETECTION CONDITION				•  Instrument cluster has detected unprogrammed key ID number.
POSSIBLE CAUSE				•  Key malfunction ―  No keys have been programmed after replacing instrument cluster. ―  Unprogrammed key used. ―  Attempt made to program a ninth key. •  Instrument cluster malfunction •  PCM malfunction

Diagnostic Procedure

STEP	INSPECTION		ACTION
1	VERIFY NUMBER OF PROGRAMMED KEYS •  Access the following PID using the M-MDS and verify the programmed keys. (See PID/DATA MONITOR INSPECTION [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].) ―  NUMKEYS (See PID/DATA MONITOR TABLE [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].) •  Are one or more keys programmed?	Yes	Go to the next step.
		No	Go to Step 3.
2	VERIFY NUMBER OF PROGRAMMED KEYS •  Access the following PID using the M-MDS and verify the programmed keys. (See PID/DATA MONITOR INSPECTION [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].) ―  NUMKEYS (See PID/DATA MONITOR TABLE [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].) •  Are eight keys programmed?	Yes	Erase the key ID number, then go to the next step. (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [KEYLESS ENTRY SYSTEM].)
		No	Go to the next step.
3	VERIFY INSTRUMENT CLUSTER MALFUNCTION •  Program an additional key referring to the immobilizer system-related parts programming. (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [KEYLESS ENTRY SYSTEM].) Note •  To start the engine, two or more programmed keys are necessary. •  Clear the DTC from the instrument cluster using the M-MDS. (See CLEARING DTC [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].) •  Verify the immobilizer system DTC using the M-MDS. (See DTC INSPECTION [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].) •  Is the same DTC present?	Yes	Replace the instrument cluster and program the immobilizer system-related parts. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.) (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [KEYLESS ENTRY SYSTEM].) Go to the next step.
		No	Dispose of the malfunctioning key and program a new key if necessary, then go to Step 5. (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [KEYLESS ENTRY SYSTEM].) Note •  To start the engine, two or more programmed keys are necessary.
4	VERIFY TROUBLESHOOTING COMPLETED •  Clear the DTC from the instrument cluster using the M-MDS. (See CLEARING DTC [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].) •  Verify the immobilizer system DTC using the M-MDS. (See DTC INSPECTION [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].) •  Is the same DTC present?	Yes	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [MZR 1.8, MZR 2.0, MZR 2.5].) (See PCM REMOVAL/INSTALLATION [MZR 2.0 DISI].) (See PCM REMOVAL/INSTALLATION [MZR-CD 2.2].)
		No	Go to the next step.
5	VERIFY THAT NO OTHER DTCs ARE PRESENT •  Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].)
		No	DTC troubleshooting completed.