SECURITY LIGHT 16, DTC U2510/P1260, U1147/P1260 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]

id0902e5801200

DTC

Security light flashing pattern

16

•  Communication error between the instrument cluster and the PCM (no response)

•  Communication error between the instrument cluster and the PCM (mismatched conditions)

M-MDS display

Instrument cluster

U2510

U1147

PCM

P1260

POSSIBLE CAUSE

•  Malfunction in wiring harness (CAN line) between instrument cluster and PCM

•  PCM malfunction

•  Instrument cluster malfunction

DTC	Security light flashing pattern	16	• Communication error between the instrument cluster and the PCM (no response) • Communication error between the instrument cluster and the PCM (mismatched conditions)
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 DTC

•  Are either U0073, or both, displayed, by either the instrument cluster or the PCM, or both?

Yes

Perform troubleshooting according to the corresponding DTC inspection.

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

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

No

Replace the instrument cluster and perform the resetting procedure for the immobilizer system when replacing the instrument cluster.

(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)

(See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING.)

Go to the next step.

2

VERIFY DTC

•  Using the registered key, turn the ignition switch to the ON position.

•  Is the DTC displayed?

―  Security light: 16

―  M-MDS: U2510 or U1147/P1260

Yes

Replace the PCM and perform the resetting procedure for the immobilizer system when replacing the PCM.

(See PCM REMOVAL/INSTALLATION [L8, LF].)

(See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING.)

No

DTC troubleshooting completed.

STEP	INSPECTION		ACTION
1	VERIFY DTC • Are either U0073, or both, displayed, by either the instrument cluster or the PCM, or both?	Yes	Perform troubleshooting according to the corresponding DTC inspection. (See FOREWORD [MULTIPLEX COMMUNICATION SYSTEM (L.H.D.)].) (See FOREWORD [MULTIPLEX COMMUNICATION SYSTEM (R.H.D.)].)
1		No	Replace the instrument cluster and perform the resetting procedure for the immobilizer system when replacing the instrument cluster. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.) (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING.) Go to the next step.
2	VERIFY DTC • Using the registered key, turn the ignition switch to the ON position. • Is the DTC displayed? ― Security light: 16 ― M-MDS: U2510 or U1147/P1260	Yes	Replace the PCM and perform the resetting procedure for the immobilizer system when replacing the PCM. (See PCM REMOVAL/INSTALLATION [L8, LF].) (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING.)
2		No	DTC troubleshooting completed.