SECURITY LIGHT: 16, DTC U2510/P1260, U1147/P1260 [IMMOBILIZER SYSTEM]

id0902e4903700

SECURITY LIGHT: 16

DTC: U2510/P1260

Communication error between the keyless control module and the PCM (no response)

DTC: U1147/P1260

Communication error between the keyless control module and the PCM (mismatched conditions)

DETECTION CONDITION

Keyless control module DTC: U2510

•  Communication error between the keyless control module and the PCM (no response)

Keyless control module DTC: U1147

•  Communication error between the keyless control module and the PCM (mismatched conditions)

POSSIBLE CAUSE

•  Malfunction in the wiring harness (CAN line) between the keyless control module and the PCM

•  PCM malfunction

•  Keyless control module malfunction

Diagnostic Procedure

STEP

INSPECTION

ACTION

1

VERIFY DTC USING M-MDS

•  Are either U1900 or U0073, or both, displayed, by either the keyless control module or the PCM, or both?

Yes

Perform troubleshooting according to the corresponding DTC inspection.

No

Replace the keyless control module and perform procedures for when replacing the keyless control module only.

(See KEYLESS CONTROL MODULE REMOVAL/INSTALLATION.)

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

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 procedures for when replacing the PCM only.

(See PCM REMOVAL/INSTALLATION [13B-MSP].)

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

No

DTC troubleshooting completed.

SECURITY LIGHT: 16	DTC: U2510/P1260	Communication error between the keyless control module and the PCM (no response)
	DTC: U1147/P1260	Communication error between the keyless control module and the PCM (mismatched conditions)
DETECTION CONDITION		Keyless control module DTC: U2510 • Communication error between the keyless control module and the PCM (no response) Keyless control module DTC: U1147 • Communication error between the keyless control module and the PCM (mismatched conditions)
POSSIBLE CAUSE		• Malfunction in the wiring harness (CAN line) between the keyless control module and the PCM • PCM malfunction • Keyless control module malfunction

STEP	INSPECTION		ACTION
1	VERIFY DTC USING M-MDS • Are either U1900 or U0073, or both, displayed, by either the keyless control module or the PCM, or both?	Yes	Perform troubleshooting according to the corresponding DTC inspection.
1		No	Replace the keyless control module and perform procedures for when replacing the keyless control module only. (See KEYLESS CONTROL MODULE REMOVAL/INSTALLATION.) (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [WITH KEYLESS ENTRY SYSTEM].) 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 procedures for when replacing the PCM only. (See PCM REMOVAL/INSTALLATION [13B-MSP].) (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [WITH KEYLESS ENTRY SYSTEM].)
2		No	DTC troubleshooting completed.