7. Check Stop Lamp Switch Power Supply Circuit

1. Turn ignition switch OFF.
2. Disconnect stop lamp switch harness connector.
3. Check voltage between stop lamp switch terminal 1 and ground with CONSULT-II or tester.
   1. Voltage: Battery voltage 

OK or NG 

OK >>GO TO 9. CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT .

NG >>GO TO 8. DETECT MALFUNCTIONING PART .

Fig 1: Checking Voltage Between Stop Lamp Switch Terminal 1 And Ground

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