Stop Lamp Switch Check

With CONSULT-III 

Check stop lamp switch ("STOP LAMP SW") in "DATA MONITOR" mode with CONSULT-III.

Without CONSULT-III 

1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check voltage between BCM connector M18 terminal 9 and ground.
   VOLTAGE AND CONTINUITY SPECIFICATIONS
   
   

   Connector	Terminals		Condition	Voltage (V) (Approx.)
   	(+)	(-)
   M18	9	Ground	Brake pedal depressed	Battery voltage
   			Brake pedal released	0

   OK or NG 

   OK: Stop lamp switch circuit is OK.

   NG: GO TO 2.

   Fig 1: Checking Voltage Between BCM Connector M18 Terminal 9 And Ground

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

Check voltage between stop lamp switch harness connector E60 terminal 1 and ground.

1 - Ground : Battery voltage 

Fig 2: Checking Voltage Between Stop Lamp Switch Harness Connector E60 Terminal 1 And Ground

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

OK or NG 

OK: GO TO 3.

NG: Repair or replace harness between stop lamp switch power supply circuit and fuse.

Check continuity between stop lamp switch terminals 1 and 2.

Fig 3: Checking Continuity Between Stop Lamp Switch Terminals 1 And 2

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

OK or NG 

OK: GO TO 4.

NG: Replace stop lamp switch.

1. Check continuity between BCM connector M18 (A) terminal 9 and stop lamp switch connector E60 (B) terminal 2.

   9 - 2 : Continuity should exist. 

2. Check continuity between BCM connector M18 (A) terminal 9 and ground.

   9 - Ground : Continuity should not exist. 

   Fig 4: Checking Continuity Between BCM Connector Terminals And Ground

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

   OK or NG 

   OK: Check condition of harness and connector.

   NG: Repair or replace harness.