SECURITY LIGHT: 16, DTC: U0100:87/P1260:00 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]

id0902e5356800

DTC	Security light flashing pattern		16	Communication error between instrument cluster and PCM (no response)
	M-MDS display	Instrument cluster	U0100:87
		PCM	P1260:00
POSSIBLE CAUSE				•  Malfunction in wiring harness (CAN line) between instrument cluster and PCM •  PCM malfunction •  Instrument cluster malfunction

Diagnostic Procedure

Step	Inspection		Action
1	VERIFY DTCs •  Clear DTCs using the M-MDS. (See CLEARING DTC [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].) •  Verify DTCs using the M-MDS. (See DTC INSPECTION [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].) •  Is a DTC displayed for either the instrument cluster or PCM, or both? ―  U0001:88	Yes	Repair the malfunctioning part according to the separate DTC inspection. (See DTC U0001:88, U0073:00 [MULTIPLEX COMMUNICATION SYSTEM].)
		No	Go to the next step.
2	VERIFY DTCs •  Clear DTCs using the M-MDS. (See CLEARING DTC [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].) •  Verify DTCs using the M-MDS. (See DTC INSPECTION [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].) •  Are DTCs output? ―  Instrument cluster: U0100:87 ―  PCM:P1260:00	Yes	•  Inspect DTC P1260:00. (See DTC P1260:00 [ZJ, ZY].) •  Go to the next step.
		No	Go to step 4.
3	VERIFY AFTER REPAIR •  Clear DTCs using the M-MDS. (See CLEARING DTC [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].) •  Verify DTCs using the M-MDS. (See DTC INSPECTION [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].) •  Are DTCs output again? ―  Instrument cluster: U0100:87 ―  PCM:P1260:00	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	Go to the next step.
4	VERIFY THAT NO OTHER DTCs ARE PRESENT •  Verify if other DTCs are displayed. •  Are any other DTCs output?	Yes	Perform the corresponding DTC inspection.
		No	DTC troubleshooting completed.