Diagnosis Procedure

WARNING: This page is about a different car, the 2008 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.

SECURITY INDICATOR LAMP ACTIVE TEST

With CONSULT-III

Check "THEFT IND" in "ACTIVE TEST" mode with CONSULT-III.

Without CONSULT-III

Disconnect BCM.
Check voltage between BCM harness connector M18 terminal 23 and ground.

VOLTAGE REFERENCE CHART

Connector	Terminals		Condition	Voltage (V) (Approx.)
Connector	(+)	(-)	Condition	Voltage (V) (Approx.)
M18	23	Ground	ON	0
M18	23	Ground	OFF	Battery voltage

Is the inspection result normal?

Yes: Security indicator lamp is OK.

No: GO TO 2

Fig 1: Identifying Voltage Between BCM Harness Connector M18 Terminal 23 And Ground

Courtesy of NISSAN MOTOR CO., U.S.A.

SECURITY INDICATOR LAMP CHECK
Check security indicator lamp condition.

Is the inspection result normal?

Yes: GO TO 3

No: Replace security indicator lamp.
CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect BCM and security indicator lamp connector.
3. Check continuity between BCM connector (A) M18 terminal 23 and security indicator lamp harness connector (B) M24 terminal 28.
  23 - 28 : Continuity should exist.
4. Check continuity between BCM connector (A) M18 terminal 23 and ground.
23 - Ground : Continuity should not exist.

Fig 2: Identifying Continuity Between BCM Connector (A) M18 Terminal 23 And Security Indicator Lamp Connector (B) M24 Terminal 28
Courtesy of NISSAN MOTOR CO., U.S.A.

Is the inspection result normal?

Yes: Check the following:
- 10A fuse [No. 19, located in fuse block (J/B)]
- Harness for open or short between security indicator lamp and fuse
No: Repair or replace harness.