Daytime Light Control Does Not Operate Properly (Normal Headlamps Operate Properly)

WARNING: This page is about a different car, the 2006 Infiniti QX56. 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 connector E103 terminals 2, 5 and ground.
  2, 5 - Ground : Battery voltage should exist.
  
  Fig 1: Identifying Voltage Between Daytime Light Relay Connector E103 Terminals 2, 5 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
1. Apply battery voltage to daytime light relay terminal 2 and ground terminal 1.
2. Check continuity between terminals 3 and 5.
  3 - 5 : Continuity should exist.
  
  Fig 2: Identifying Continuity Between Terminals 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 IPDM E/R connector E122.
2. Check continuity between daytime light relay connector E103 (B) terminal 1 and front combination lamp LH connector E122 (A) terminal 44.
  44 - 1 : Continuity should exist.
  
  Fig 3: Identifying Continuity Between Daytime Light Relay Terminal 1 And Front Combination Lamp LH Terminal 44
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
- OK : GO TO 4.
- NG : Repair harness or connector.
CHECK INPUT SIGNAL
1. Connect daytime light relay and IPDM E/R connector.
2. Start engine and release parking brake. Headlamp switch OFF.
3. Select "IPDM E/R" on CONSULT-II. With data monitor, make sure "DTRL REQ" turns ON-OFF linked with operation of parking brake switch.
  Parking brake ON : DTRL REQ ON
  
  Parking brake OFF : DTRL REQ OFF
  
  Fig 4: Consult-II Screen Display - Data Monitor
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
- OK : Replace IPDM E/R. Refer to "REMOVAL AND INSTALLATION OF IPDM E/R ".
- NG : GO TO 5.
CHECKING CAN COMMUNICATIONS
Select "BCM" on CONSULT-II and perform self-diagnosis for BCM.

Displayed self-diagnosis results
- NO DTC : Replace BCM. Refer to "BCM ".
- CAN COMM CIRCUIT : Check BCM CAN communication system. Refer to "CAN COMMUNICATION INSPECTION USING CONSULT-II (SELF-DIAGNOSIS) ".
  
  Fig 5: CONSULT II Display - Self-Diag Results
  Courtesy of NISSAN MOTOR CO., U.S.A.