SECURITY INDICATOR LIGHT: 16, DTC: U0100:87/P1260:00 [IMMOBILIZER SYSTEM]

id0902e4908600

System malfunction location

Communication error with PCM (no response or data mis-match)

Detection condition

•  The starter stop unit detects a communication error (no response or immobilizer system cancel not possible) with the PCM.

Fail-safe

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Possible cause

•  The immobilizer system-related parts have not been programmed when replacing the PCM or start stop unit.

•  Start stop unit malfunction

•  PCM malfunction

System wiring diagram

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System malfunction location	Communication error with PCM (no response or data mis-match)
Detection condition	• The starter stop unit detects a communication error (no response or immobilizer system cancel not possible) with the PCM.
Fail-safe	—
Possible cause	• The immobilizer system-related parts have not been programmed when replacing the PCM or start stop unit. • Start stop unit malfunction • PCM malfunction
System wiring diagram	—

Diagnostic Procedure

Step	Inspection		Action
1	Perform immobilizer system-related part programming. • Perform start stop unit replacement and programming due to simultaneous replacement of start stop unit/PCM. (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING.) • Clear DTC for the immobilizer system using the M-MDS. (See CLEARING DTC [IMMOBILIZER SYSTEM].) • Perform the DTC inspection for the immobilizer system using the M-MDS. (See DTC INSPECTION [IMMOBILIZER SYSTEM].) • Security indicator light: 16, DTC U0100:87/P1260:00 displayed?	Yes	Go to the next step.
1		No	Go to Step 4.
2	PERFORM DTC INSPECTION AND VERIFY IF MALFUNCTIONING PART IS START STOP UNIT • Clear DTC for the immobilizer system using the M-MDS. (See CLEARING DTC [IMMOBILIZER SYSTEM].) • Perform the DTC inspection for the immobilizer system using the M-MDS. (See DTC INSPECTION [IMMOBILIZER SYSTEM].) • Security indicator: 16, DTC U0100:87/P1260:00 displayed?	Yes	Replace the start stop unit, then go to the next step. (See START STOP UNIT REMOVAL/INSTALLATION.)
2		No	Go to Step 4.
3	PERFORM DTC INSPECTION AND VERIFY IF MALFUNCTIONING PART IS PCM • Clear DTC for the immobilizer system using the M-MDS. (See CLEARING DTC [IMMOBILIZER SYSTEM].) • Perform the DTC inspection for the immobilizer system using the M-MDS. (See DTC INSPECTION [IMMOBILIZER SYSTEM].) • Security indicator: 16, DTC U0100:87/P1260:00 displayed?	Yes	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See PCM REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
3		No	Go to the next step.
4	VERIFY IF OTHER DTCs DISPLAYED • Are any other DTCs displayed?	Yes	Repair the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [IMMOBILIZER SYSTEM].)
4		No	DTC troubleshooting completed.