Daytime Light Control Does Not Operate Properly

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 DAYTIME LIGHT RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Remove daytime light relay.
3. Check voltage between daytime light relay harness connector E15 terminal 2 and ground.
  2 - Ground : Battery voltage.
4. Check voltage between daytime light relay harness connector E15 terminal 5 and ground.
  5 - Ground : Battery voltage.
  
  Fig 1: Identifying Voltage Between Daytime Light Relay Connector And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  OK or NG
  
  OK: GO TO 2.
  
  NG: Repair harness or connector.
CHECK DAYTIME LIGHT RELAY
Apply battery voltage to between daytime light relay terminal 1, 2 and check continuity between terminal 3 and 5.

3 - 5 : Continuity should exist.

Fig 2: Identifying Continuity Between Terminal 3 And 5
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: GO TO 3.

NG: Replace daytime light relay.
CHECK DAYTIME LIGHT RELAY CIRCUIT
1. Disconnect parking lamp RH and LH connectors.
2. Check continuity between daytime light relay connector E15 terminal 3 and parking lamp RH harness connector E23 terminal 1.
  3 - 1 : Continuity should exist.
3. Check continuity between daytime light relay connector E15 terminal 3 and parking lamp LH harness connector E43 terminal 1.
  3 - 1 : Continuity should exist.
  
  Fig 3: Identifying Continuity Between Daytime Light Relay Connector And Parking Lamp Connector
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  OK or NG
  
  OK: GO TO 4.
  
  NG: Repair harness or connector.
CHECK GROUND
1. Check continuity between parking lamp RH harness connector E23 terminal 3 and ground.
  3 - Ground : Continuity should exist.
2. Check continuity between parking lamp LH harness connector E43 terminal 3 and ground.
  3 - Ground : Continuity should exist.
  
  Fig 4: Identifying Continuity Between Parking Lamp Connector And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  OK or NG
  
  OK: GO TO 5.
  
  NG: Repair harness or connector.
CHECK BULB
Inspect bulbs of lamp which do not illuminate.

OK or NG

OK: GO TO 6.

NG: Replace bulb.
CHECK DAYTIME RELAY CIRCUIT
1. Disconnect combination meter connector.
2. Check continuity between daytime lamp relay harness connector E15 terminal 1 and combination meter harness connector M20 terminal 10.
  1 - 10 : Continuity should exist.
  
  Fig 5: Identifying Continuity Between Daytime Lamp Relay Connector Terminal 1 And Combination Meter Connector Terminal 10
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  OK or NG
  
  OK: GO TO 7.
  
  NG: Repair harness or connector.
CHECK INPUT SIGNAL
CONSULT-III DATA MONITOR
1. Select "HEAD LAMP" of BCM data monitor item.
2. With the engine running or stopped, check the monitor status.
  Engine running : ENGINE RUN ON
  
  Engine stop : ENGINE RUN OFF
3. Select "HEAD LAMP" of BCM data monitor item.
4. With operating the parking brake switch, check the monitor status.
  Parking brake ON : PKB SW ON
  
  Parking brake OFF : PKB SW OFF
  
  OK or NG
  
  OK: Replace BCM. Refer to "REMOVAL AND INSTALLATION OF BCM ".
  
  NG: GO TO 8.
CHECKING CAN COMMUNICATIONS
1. Select "self-diagnosis" of BCM".
2. Check display content in self-diagnosis results.
Displayed self-diagnosis results

NO DTC>> Replace BCM. Refer to "REMOVAL AND INSTALLATION OF BCM ".

CAN COMM CIRCUIT>> Check BCM CAN communication system. Refer to "CAN COMMUNICATION INSPECTION USING CONSULT-III (SELF-DIAGNOSIS) ".