Diagnosis Procedure

WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.

CHECK STOP LAMP SWITCH CIRCUIT

Turn ignition switch OFF.

Check the stop lamp when depressing and releasing the brake pedal.

Brake pedal	Stop lamp
Fully released	Not illuminated
Slightly depressed	Illuminated

OK or NG

OK: GO TO 4.

NG: GO TO 2.

CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
1. Disconnect stop lamp switch harness connector.
  
  Fig 1: Identifying ASCD Brake Switch, Stop Lamp Switch And Brake Pedal
  Courtesy of NISSAN NORTH AMERICA, INC.
2. Check voltage between stop lamp switch terminal 1 and ground with CONSULT or tester.
  Voltage: Battery voltage
  
  OK or NG
  
  OK: GO TO 4.
  
  NG: GO TO 3.
  
  Fig 2: Checking Voltage Between Stop Lamp Switch Terminal 1 And Ground
  Courtesy of NISSAN NORTH AMERICA, INC.
DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors M31, E152
- Fuse block (J/B) connector M60
- 10A fuse (No. 21)
- Harness for open and short between stop lamp switch and battery
  : Repair open circuit or short to ground or short to power in harness or connectors.
CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 101 and stop lamp switch terminal 2.
  Refer to WIRING DIAGRAM .
  
  Continuity should exist .
4. Also check harness for short to ground and short to power.
  OK or NG
  
  OK: GO TO 5.
  
  NG: Repair open circuit or short to ground or short to power in harness or connectors.
CHECK STOP LAMP SWITCH
Refer to "COMPONENT INSPECTION ".

OK or NG

OK: GO TO 6.

NG: Replace stop lamp switch. Refer to REMOVAL AND INSTALLATION .
CHECK INTERMITTENT INCIDENT
Refer to "HOW TO CHECK TERMINAL " and "INTERMITTENT INCIDENT ".

:INSPECTION END