Diagnostic Procedure

1. Turn ignition switch OFF.
2. Check the stop lamp when depressing and releasing the brake pedal.
   Fig 1: Identifying Stop Lamp Switch Specifications

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

OK or NG

1. OK: go to  4 .
2. NG: go to 2.

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

OK or NG

1. OK: go to  4 .
2. NG: go to 3.

Check the following.

• 10A fuse
• Fuse block (J/B) connector E201
• Harness for open and short between stop lamp switch and battery
  1. Repair open circuit or short to ground or short to power in harness or connectors.

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Disconnect stop lamp switch harness connector. See Figure .
4. Check harness continuity between ECM terminal 101 and stop lamp switch terminal 2.

   Refer to wiring diagram. See Figure .

   1. Continuity should exist  .
5. Also check harness for short to ground and short to power.

OK or NG

1. OK: go to  6 .
2. NG: go to 5.

Check the following.

• Harness connectors E211, M41
• Harness for open or short between ECM and stop lamp switch
  1. Repair open circuit or short to ground or short to power in harness or connectors.

Refer to COMPONENT INSPECTION  .

OK or NG

1. OK: go to 7.
2. NG: Replace stop lamp switch.

Refer to TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT  .

1. Inspection end