Stop Lamp Switch System Inspection

INSPECTION PROCEDURE

1. SELF-DIAGNOSIS RESULT CHECK 

   Check self-diagnosis results.

   STOP LAMP SWITCH SYSTEM - SELF-DIAGNOSIS RESULTS
   
   

   Self-diagnosis results
   STOP LAMP SW

   Is the above displayed in the self-diagnosis display items?

   1. YES: GO TO 2.
   2. NO: Inspection End.
2. CONNECTOR INSPECTION 
   1. Disconnect the ABS actuator and electric unit (control unit) connector E125 and stop lamp switch connector E38.
   2. Check the terminals for deformation, disconnection, looseness or damage.

   OK or NG 

   1. OK: GO TO 3.
   2. NG: Repair or replace as necessary.
3. STOP LAMP SWITCH INSPECTION 

   Check the voltage between the ABS actuator and electric unit (control unit) harness connector E125 terminal 41 (R/B) and body ground.

   1. Brake pedal depressed: Battery voltage (approx. 12V) 
   2. Brake pedal not depressed: Approx. 0V 

   OK or NG 

   1. OK: Perform self-diagnosis again. If the same results appear, replace ABS actuator and electric unit (control unit). Refer to "REMOVAL AND INSTALLATION ".
   2. NG: GO TO 4.
   Fig 1: Checking Voltage Between ABS Actuator And Electric Unit (Control Unit) Harness Connector E125 Terminal 41 And Body Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.
4. STOP LAMP RELAY CIRCUIT INSPECTION 
   1. Disconnect the stop lamp relay harness connector E12.
   2. Check the continuity between the ABS actuator and electric unit (control unit) harness connector E125 terminal 41 (R/B) and stop lamp relay harness connector E12 terminal 4 (R/B).
      1. Continuity should exist 

   OK or NG 

   1. OK: Perform self-diagnosis again. If the same results appear, replace ABS actuator and electric unit (control unit). Refer to "REMOVAL AND INSTALLATION ".
   2. NG: Refer to "STOP LAMP ".
   Fig 2: Checking Continuity Between ABS Actuator And Electric Unit (Control Unit) Harness Connector E125 Terminal 41 And Stop Lamp Relay Harness Connector E12 Terminal 4

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