Nissan Altima 2007-2012 Service Manual: Headlamp (xenon)

 Description

The IPDM E/R (intelligent power distribution module engine room) controls the headlamp low relay based on inputs from the BCM over the CAN communication lines. When the headlamp low relay is energized, power flows through fuses 51 and 52, located in the IPDM E/R. Power then flows to the front combination lamps to the headlamp low beam.

Component Function Check

1.CHECK HEADLAMP (LO) OPERATION

1. Start IPDM E/R auto active test. Refer to PCS-14, "Diagnosis Description".

2. Check that the headlamp is turned ON.

NOTE: HI/LO is repeated 1 second each when using the IPDM E/R auto active test.

1. Select "EXTERNAL LAMP" of IPDM E/R active test item.

2. With operating the test items, check that the headlamp is turned ON.

Is the headlamp turned ON? YES >> Headlamp (LO) is normal.

NO >> Refer to EXL-44, "HEADLAMP (XENON) : Diagnosis Procedure".

Diagnosis Procedure

1.CHECK HEADLAMP (LO) FUSES

1. Turn the ignition switch OFF.

2. Check that the following fuses are not open.

Is the fuse open? YES >> Repair the harness and replace the fuse.

NO >> GO TO 2

2.CHECK HEADLAMP (LO) OUTPUT VOLTAGE

1. Turn the ignition switch OFF.

2. Disconnect the front combination lamp connector.

3. Turn the ignition switch ON.

4. Select "EXTERNAL LAMP" of IPDM E/R active test item.

5. With EXTERNAL LAMP ON, check the voltage between the combination lamp connector and ground.

Is battery voltage present? YES >> GO TO 4

NO >> GO TO 3

3.CHECK HEADLAMP (LO) CIRCUIT FOR OPEN

1. Turn the ignition switch OFF.

2. Disconnect IPDM E/R connector.

3. Check continuity between the IPDM E/R harness connector and the front combination lamp harness connector.

Does continuity exist? YES >> GO TO 4

NO >> Repair the harnesses or connectors.

4.CHECK FRONT COMBINATION LAMP (LO) GROUND CIRCUIT

1. Disconnect the front combination lamp connector.

2. Check continuity between the front combination lamp harness connector terminal and ground.

Does continuity exist? YES >> Inspect the headlamp bulb.

NO >> Repair the harness.

    Headlamp (halogen)
    Description The IPDM E/R (intelligent power distribution module engine room) controls the headlamp low relay based on inputs from the BCM over the CAN communication lines. When the headlamp low ...

    Front fog lamp circuit
    Description The IPDM E/R (intelligent power distribution module engine room) controls the front fog lamp relay based on inputs from the BCM over the CAN communication lines. When the front fog la ...

    Other materials:

    P1715 input speed sensor (primary speed sensor)
    Description ECM receives primary speed sensor signal from TCM through CAN communication line. ECM uses this signal for engine control. DTC Logic DTC DETECTION LOGIC NOTE: • If DTC P1715 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX. • If DTC P1715 is ...

    Fuses
    Two types of fuses are used. Type A is used in the fuse boxes in the engine compartment. Type B is used in the passenger compartment fuse box. Type A fuses are provided as spare fuses. They are stored in the passenger compartment fuse box. Type A fuses can be installed in the engine com ...

    P2119 electric throttle control actuator
    Description Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc. The throttle control motor is operated by the ECM and it opens and closes the throttle valve. The throttle position sensor detects the throttle valve position, and the open ...