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:

    B2108 steering lock relay
    Description The steering lock relay ON signal is transmitted to IPDM E/R by BCM via CAN communication. IPDM E/R turns the steering lock relay ON and transmits the release of the steering to BCM. DTC Logic DTC DETECTION LOGIC NOTE: • If DTC B2108 is displayed with DTC U1000, first perf ...

    P0131 A/F Sensor 1
    Description The air fuel ratio (A/F) sensor 1 is a planar one-cell limit current sensor. The sensor element of the A/F sensor 1 is composed an electrode layer, which transports ions. It has a heater in the element. The sensor is capable of precise measurement = 1, but also in the lean and r ...

    BCM (Body control module)
    Reference Value VALUES ON THE DIAGNOSIS TOOL Terminal Layout Physical Values 1: Sedan only 2: With LH front window anti-pinch 3: With LH and RH front window anti-pinch 4: With Intelligent Key 5: Without Intelligent Key Wiring Diagram-Sedan ...