Stop Lamp Does Not Operate

WARNING: This page is about a different car, the 2008 Infiniti FX45 and 2008 Infiniti FX35. However, it is still accessible from the selected car via links, so may be relevant.

CHECK TAIL LAMP AND TURN SIGNAL LAMP
Make sure tail lamps and turn signal lamps is illuminated.

OK or NG

OK: GO TO 2.

NG: GO TO 6.
CHECK FUSE
Check fuse No.20 is blow out.

OK or NG

OK: GO TO 3.

NG: If fuse is blow out, be sure to eliminate cause of problem before installing new fuse.

CHECK INPUT SIGNAL

Turn ignition switch OFF.
Check voltage between rear combination lamp control unit harness connector and ground.

Fig 1: Identifying Voltage Between Rear Combination Lamp Control Unit Harness Connector And Ground

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

INPUT SIGNAL

(+)		(-)	Condition	Voltage
BCM connector	Terminal	(-)	Condition	Voltage
B65	3	Ground	Stop lamp switch is ON. (Depressed)	Battery voltage
B65	3	Ground	Stop lamp switch is OFF. (Released)	Approx. 0 V

OK or NG

OK: Replace rear combination lamp control unit.

NG: GO TO 4.

CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
1. Disconnect stop lamp switch connector.
2. Check voltage between stop lamp switch harness connector E210 terminal 1 and ground.
  1 - Ground : Battery voltage.
  
  Fig 2: Identifying Voltage Between Stop Lamp Switch Connector Terminal 1 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG

OK: GO TO 5.

NG: Repair harness or connector.
CHECK STOP LAMP SWITCH CIRCUIT
1. Disconnect rear combination lamp control unit connector.
2. Check continuity between stop lamp switch harness connector E210 terminal 2 and rear combination lamp control unit harness connector B65 terminal 3.
  2 - 3 : Continuity should exist.
  
  Fig 3: Identifying Continuity Between Stop Lamp Switch Connector Terminal 2 And Rear Combination Lamp Control Unit Connector Terminal 3
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG

OK: Replace stop lamp switch.

NG: Repair harness or connector.
CHECK POWER SUPPLY CIRCUIT
1. Disconnect rear combination lamp control unit connector.
2. Check voltage between rear combination lamp control unit harness connector B65 terminal 1 and ground.
  1 - Ground : Battery voltage.
  
  Fig 4: Identifying Voltage Between Rear Combination Lamp Control Unit Connector Terminal 1 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG

OK: GO TO 7.

NG: Repair harness or connector.
CHECK GROUND CIRCUIT
Check continuity between rear combination lamp control unit harness connector B65 terminal 7 and ground.

7 - Ground : Continuity should exist.

Fig 5: Identifying Continuity Between Rear Combination Lamp Control Unit Connector Terminal 7 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: GO TO 8.

NG: Repair harness or connector.
CHECK STOP LAMPS CIRCUIT
1. Disconnect rear combination lamp RH and LH connectors.
2. Check continuity between rear combination lamp control unit harness connector B65 terminal 11 and rear combination lamp LH harness connector B57 terminal 3.
  11 - 3 : Continuity should exist.
3. Check continuity between rear combination lamp control unit harness connector B65 terminal 10 and rear combination lamp LH harness connector B57 terminal 4.
  10 - 4 : Continuity should exist.
4. Check continuity between rear combination lamp control unit harness connector B65 terminal 9 and rear combination lamp RH harness connector B219 terminal 3.
  9 - 3 : Continuity should exist.
5. Check continuity between rear combination lamp control unit harness connector B65 terminal 8 and rear combination lamp RH harness connector B219 terminal 4.
  8 - 4 : Continuity should exist.
  
  Fig 6: Checking Stop Lamps Circuit
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG

OK: Replace rear combination lamp control unit or rear combination lamp, and then check if turn signal lamps is illuminated.

NG: Repair harness or connector.