Lighting Switch Input Signal Inspection

CHECK LIGHTING SWITCH INPUT SIGNAL
With CONSULT-II
- Check lighting switch "HD/LMP 1ST SW" in "DATA MONITOR" mode with CONSULT-II.
  "HD/LMP 1ST SW"
  
  When lighting switch is 1ST or 2ND : ON
  
  When lighting switch is OFF : OFF
Without CONSULT-II
- Check lighting switch in switch monitor mode, refer to "ON BOARD DIAGNOSIS ".
  
  Fig 1: CONSULT-II Display - Data Monitor
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK : Lighting switch input signal is OK. Return to "SYMPTOM CHART ".
2. NG : GO TO 2.
CHECK TAIL LAMP RELAY CONTROL SIGNAL
1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Check voltage between BCM harness connector M4 terminal 3 and ground.
  3 - Ground
  
  When lighting switch is 1ST or 2ND : Approx. 12 V
  
  When lighting switch is OFF : Approx. 0 V
OK or NG
1. OK : Replace BCM.
2. NG : Repair harness between BCM and tail lamp relay.
  
  Fig 2: Identifying Voltage Between BCM Harness Connector M4 Terminal 3 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.