NO.1 SECURITY LIGHT DISPLAY IS NOT NORMAL [IMMOBILIZER SYSTEM]

id0903f5800200

1

The security light display is not normal.

DESCRIPTION

•  The security light remains illuminated 2 min or more after the engine switch is turned to the ON position

•  The security light does not illuminate when the engine switch is turned to the ON position.

•  The security light remains illuminated while the engine switch is at the LOCK position.

•  The security light does not flash or the flashing interval is abnormal while the engine switch is at the LOCK position.

POSSIBLE CAUSE

•  Keyless unit malfunction

•  Instrument cluster malfunction

•  Open or short circuit in the wiring harness between the instrument cluster and immobilizer unit

Note

•  If the security light remains illuminated for approx. 1 min after the engine switch is turned to the ON position and then displays a DTC, perform immobilizer system malfunction diagnosis according to that DTC. (See DTC TABLE [IMMOBILIZER SYSTEM].)

•  While performing immobilizer system security access using the M-MDS, the security light does not illuminate even if the engine switch is turned to the ON position. Verify the illumination condition of the security light by disconnecting the DLC-2 to release security access.

Diagnostic Procedure

STEP	INSPECTION		ACTION
1	• Turn the engine switch to the ON position. • Do other warning lights in the instrument cluster illuminate normally?	Yes	Go to the next step.
1		No	Inspect the instrument cluster. (See INSTRUMENT CLUSTER INSPECTION.)
2	• Turn the engine switch to the LOCK position. • Disconnect the negative battery cable. • Disconnect the instrument cluster connector (24-pin). • Connect the negative battery cable. • Does the security light illuminate?	Yes	Replace the instrument cluster. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)
2		No	Go to the next step.
3	• Disconnect the negative battery cable. • Connect the instrument cluster connector. • Disconnect the immobilizer unit connector • Connect the negative battery cable. • Does the security light illuminate?	Yes	Go to the next step.
3		No	Repair or replace the wiring harness for short to GND between the immobilizer unit connector terminal M and the instrument cluster terminal 1J.
4	• Disconnect the negative battery cable. • Ground instrument cluster terminal 1J using a jumper wire. • Connect the negative battery cable. • Does the security light illuminate?	Yes	Go to the next step.
4		No	Replace the instrument cluster. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)
5	• Disconnect the negative battery cable. • Connect the instrument cluster connector. • Disconnect the immobilizer unit connector • Ground immobilizer unit connector terminal M using a jumper wire. • Connect the negative battery cable. • Does the security light illuminate?	Yes	Replace the immobilizer unit. (See IMMOBILIZER UNIT REMOVAL/INSTALLATION.)
5		No	Repair or replace the wiring harness for short to GND between the immobilizer unit connector terminal M and the instrument cluster terminal 1J.

1	The security light display is not normal.
DESCRIPTION	• The security light remains illuminated 2 min or more after the engine switch is turned to the ON position • The security light does not illuminate when the engine switch is turned to the ON position. • The security light remains illuminated while the engine switch is at the LOCK position. • The security light does not flash or the flashing interval is abnormal while the engine switch is at the LOCK position.
POSSIBLE CAUSE	• Keyless unit malfunction • Instrument cluster malfunction • Open or short circuit in the wiring harness between the instrument cluster and immobilizer unit Note • If the security light remains illuminated for approx. 1 min after the engine switch is turned to the ON position and then displays a DTC, perform immobilizer system malfunction diagnosis according to that DTC. (See DTC TABLE [IMMOBILIZER SYSTEM].) • While performing immobilizer system security access using the M-MDS, the security light does not illuminate even if the engine switch is turned to the ON position. Verify the illumination condition of the security light by disconnecting the DLC-2 to release security access.
POSSIBLE CAUSE