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

•  Instrument cluster malfunction

•  PCM malfunction

DTC	Security light flashing pattern	16	Communication error between instrument cluster and PCM (no response)
POSSIBLE CAUSE	• Malfunction in wiring harness (CAN line) between instrument cluster and PCM • Instrument cluster malfunction • PCM malfunction

Diagnostic Procedure

Step

Inspection

Action

1

VERIFY DTCs

•  Perform the immobilizer system DTC inspection using the M-MDS.
(See DTC INSPECTION [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].)

•  Is the following DTC present?

―  Instrument cluster: U0001:88

―  PCM: U0073:00

Yes

Go to the applicable DTC inspection.

(See FOREWORD [MULTIPLEX COMMUNICATION SYSTEM (L.H.D.)].)

(See FOREWORD [MULTIPLEX COMMUNICATION SYSTEM (R.H.D.)].)

No

Go to the next step.

2

PERFORM DTC INSPECTION AND VERIFY THAT MALFUNCTIONING PART IS INSTRUMENT CLUSTER

•  Clear DTCs using the M-MDS.
(See CLEARING DTC [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].)

•  Perform the immobilizer system DTC inspection using the M-MDS.
(See DTC INSPECTION [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].)

•  Is the following DTC present?

―  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 Step 5.

3

PERFORM DTC INSPECTION AND VERIFY THAT MALFUNCTIONING PART IS PCM

•  Clear DTCs using the M-MDS.
(See CLEARING DTC [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].)

•  Perform the immobilizer system DTC inspection using the M-MDS.
(See DTC INSPECTION [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].)

•  Is the following DTC present?

―  Instrument cluster: U0100:87

―  PCM: P1260:00

Yes

Replace the PCM and program the immobilizer system-related parts.

(See PCM REMOVAL/INSTALLATION [MZR 1.3, MZR 1.5].)

(See PCM REMOVAL/INSTALLATION [MZ-CD 1.6].)

(See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [KEYLESS ENTRY SYSTEM].)

Go to the next step.

No

Go to Step 5.

4

VERIFY TROUBLESHOOTING COMPLETED

•  Clear DTCs using the M-MDS.
(See CLEARING DTC [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].)

•  Perform the immobilizer system DTC inspection using the M-MDS.
(See DTC INSPECTION [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].)

•  Is the following DTC present?

―  Instrument cluster: U0100:87

―  PCM: P1260:00

Yes

Inspect the DTC P1260:00.

(See DTC P1260:00 [MZR 1.3, MZR 1.5].)

(See MZ-CD 1.6.)

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.

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

Step	Inspection		Action
1	VERIFY DTCs • Perform the immobilizer system DTC inspection using the M-MDS. (See DTC INSPECTION [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].) • Is the following DTC present? ― Instrument cluster: U0001:88 ― PCM: U0073:00	Yes	Go to the applicable DTC inspection. (See FOREWORD [MULTIPLEX COMMUNICATION SYSTEM (L.H.D.)].) (See FOREWORD [MULTIPLEX COMMUNICATION SYSTEM (R.H.D.)].)
1		No	Go to the next step.
2	PERFORM DTC INSPECTION AND VERIFY THAT MALFUNCTIONING PART IS INSTRUMENT CLUSTER • Clear DTCs using the M-MDS. (See CLEARING DTC [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].) • Perform the immobilizer system DTC inspection using the M-MDS. (See DTC INSPECTION [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].) • Is the following DTC present? ― 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.
2		No	Go to Step 5.
3	PERFORM DTC INSPECTION AND VERIFY THAT MALFUNCTIONING PART IS PCM • Clear DTCs using the M-MDS. (See CLEARING DTC [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].) • Perform the immobilizer system DTC inspection using the M-MDS. (See DTC INSPECTION [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].) • Is the following DTC present? ― Instrument cluster: U0100:87 ― PCM: P1260:00	Yes	Replace the PCM and program the immobilizer system-related parts. (See PCM REMOVAL/INSTALLATION [MZR 1.3, MZR 1.5].) (See PCM REMOVAL/INSTALLATION [MZ-CD 1.6].) (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [KEYLESS ENTRY SYSTEM].) Go to the next step.
3		No	Go to Step 5.
4	VERIFY TROUBLESHOOTING COMPLETED • Clear DTCs using the M-MDS. (See CLEARING DTC [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].) • Perform the immobilizer system DTC inspection using the M-MDS. (See DTC INSPECTION [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].) • Is the following DTC present? ― Instrument cluster: U0100:87 ― PCM: P1260:00	Yes	Inspect the DTC P1260:00. (See DTC P1260:00 [MZR 1.3, MZR 1.5].) (See MZ-CD 1.6.)
4		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)].)
5		No	DTC troubleshooting completed.