Daytime Light Control Does Not Operate Properly

WARNING: This page is about a different car, the 2004 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

CHECK DAYTIME LIGHT RELAY POWER SUPPLY CIRCUIT
1. Remove daytime light relay.
2. Check voltage between daytime light relay harness connector H2 terminal 1 (R) and ground
  1. 1 (R) - Ground: Battery voltage should exist.
3. Check voltage between daytime light relay harness connector H2 terminal 3 (R), 6 (R) and ground
1. 3 (R), 6 (R) - Ground: Battery voltage should exist.
OK or NG
1. OK: GO TO 2.
2. NG: Repair harness or connector.
  
  Fig 1: Checking Daytime Light Relay Power Supply Circuit
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK DAYTIME LIGHT RELAY
Apply battery voltage to daytime light relay terminal 1 and 2 and check continuity between terminals 3 and 5 and terminals 6 and 7.
1. 3 - 5, 6 - 7: Continuity should exist.
OK or NG
1. OK: GO TO 3.
2. NG: Replace daytime light relay.
  
  Fig 2: Checking Daytime Light Relay
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK DAYTIME LIGHT RELAY CIRCUIT
1. Disconnect combination lamp RH and LH connector.
2. Check continuity between daytime light relay connector H2 terminal 7 (BR) and combination lamp RH harness connector E107 terminal 9 (BR).
  1. 7 (BR) - 9 (BR): Continuity should exist.
3. Check continuity between daytime light relay connector H2 terminal 5 (O) and clearance lamp LH harness connector E11 terminal 9 (O).
1. 5 (O) - 9 (O): Continuity should exist.
OK or NG
1. OK: GO TO 4.
2. NG: Repair harness or connector.
  
  Fig 3: Checking Daytime Light Relay Circuit (1 Of 2)
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK GROUND
1. Check continuity between combination lamp RH harness connector E107 and ground.
  E107 - Ground: Continuity should exist.
2. Check continuity between combination lamp LH harness connector E11 and ground.
E11 - Ground: Continuity should exist.

OK or NG
1. OK: GO TO 5.
2. NG: Repair harness or connector.
CHECK BULB
Inspect bulb of lamp which does not illuminate.

OK or NG
1. OK: GO TO 6.
2. NG: Replace bulb.
CHECK DAYTIME LIGHT RELAY CIRCUIT
1. Disconnect combination meter connector.
2. Check continuity between daytime light relay harness connector H2 terminal 2 (P) and combination meter harness connector M24 terminal 19 (P)
1. 2 (P) -19 (P): Continuity should exist.
OK or NG
1. OK: GO TO 7.
2. NG: Repair harness or connector.
  
  Fig 4: Checking Daytime Light Relay Circuit (2 Of 2)
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK INPUT SIGNAL
1. Connect combination meter connector.
2. Start engine.
3. Select "BCM" on CONSULT-II. With "HEAD LAMP" data monitor, make sure "ENGINE RUN" turns ON-OFF linked with operation of engine running or stop.
  Engine running: ENGINE RUN ON
  
  Engine stop: ENGINE RUN OFF
4. Select "BCM" on CONSULT-II. With "HEAD LAMP" data monitor, make sure "PKB SW" turns ON-OFF linked with operation of parking brake switch.
  Parking brake ON: PKR SW ON
  
  Parking brake OFF: PKR SW OFF
  
  OK or NG
  1. OK: Replace BCM. Refer to REMOVAL AND INSTALLATION OF BCM .
  2. NG: GO TO 8.
  Fig 5: Consult-II Data Monitor
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECKING CAN COMMUNICATIONS
Select "BCM" by CONSULT-II, and perform self-diagnosis for "BCM". 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-II .

Fig 6: Consult-II Display Self Diagnostic Result
Courtesy of NISSAN MOTOR CO., U.S.A.