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

WARNING: This page is about a different car, the 2005 Nissan Xterra. However, it is still accessible from the selected car via links, so may be relevant.

CHECK DAYTIME LIGHT RELAY 1 POWER SUPPLY CIRCUIT
1. Remove daytime light relay 1.
2. Check voltage between daytime light relay 1 harness connector E103 terminals 2, 5 and ground.
  2, 5 - Ground: Battery voltage should exist.
OK or NG
- OK: GO TO 2.
- NG: Repair harness or connector.
  
  Fig 1: Checking Voltage Between Daytime Light Relay 1 Connector Terminals 2, 5 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK DAYTIME LIGHT RELAY 1
1. Apply battery voltage to daytime light relay 1 terminal 2 and ground terminal 1.
2. Check continuity between terminals 3 and 5.
  3 - 5: Continuity should exist.
OK or NG
- OK: GO TO 3.
- NG: Replace daytime light relay 1.
  
  Fig 2: Checking Continuity Between Terminals 3 And 5
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK INPUT SIGNAL
1. Connect daytime light relay 1.
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 3: CONSULT-II 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 4.
CHECKING CAN COMMUNICATIONS
Select "BCM" on 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 (SELF-DIAGNOSIS) ".
  
  Fig 4: CONSULT-II Display - Self-Diagnosis Results
  Courtesy of NISSAN MOTOR CO., U.S.A.