1.CHECK STOP LAMP SWITCH INPUT SIGNAL

1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Check voltage between BCM harness connector and ground.

   (+) | (–) | Voltage (V) (Approx.)
   BCM
   Connector | Terminal
   M123 | 116 | Ground | Battery voltage

Is the inspection normal?
YES>>GO TO 2.
NO>>
Check the following.

- 10A fuse [No. 7, located in the fuse block (J/B)]
- Harness for open or short between BCM and fuse.

2.CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT

1. Disconnect stop lamp switch connector.
2. Check voltage between stop lamp harness connector and ground.

   (+) | (–) | Voltage (V) (Approx.)
   Stop lamp switch
   Connector | Terminal
   E110 | 1 | Ground | Battery voltage

Is the inspection result normal?
YES>>GO TO 3.
NO>>Check harness for open or short between stop lamp switch and fuse.
3.CHECK STOP LAMP SWITCH CIRCUIT

1. Check continuity between stop lamp switch harness connector and BCM harness connector.

   Stop lamp switch | BCM | Continuity
   Connector | Terminal | Connector | Terminal
   E110 | 2 | M123 | 118 | Existed

2. Check continuity between stop lamp switch harness connector and ground.

   Stop lamp switch | Ground | Continuity
   Connector | Terminal
   E110 | 2 | Not existed

Is the inspection result normal?
YES>>GO TO 4.
NO>>Repair or replace harness.
4.CHECK STOP LAMP SWITCH
Refer to Component Inspection.
Is the inspection result normal?
YES>>GO TO 5.
NO>>Replace stop lamp switch. Refer to Removal and Installation (GT-R certified NISSAN dealer).
5.CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident.
>>INSPECTION END