Nissan Altima 2007-2012 Service Manual: Headlamp (halogen type)
System Diagram
System Description
Control of the headlamp system operation is dependent upon the position of the lighting switch (combination switch). When the lighting switch is placed in the 2nd position, the BCM (body control module) receives input requesting the headlamps and park lamps to illuminate. This input is communicated to the IPDM E/R (intelligent power distribution module engine room) across the CAN communication lines. The CPU (central processing unit) of the IPDM E/R controls the headlamp high and headlamp low relay coils. When energized, these relays direct power to the respective headlamps, which then illuminate.
Component Parts Location
1. IPDM E/R E17, E18, E200
2. BCM M16, M17, M18, M19 (view with instrument panel removed)
3. Combination switch M28
4. Combination meter M24
Component Description
LOW BEAM OPERATION
When the lighting switch is in 2ND position, the BCM receives input requesting the headlamps to illuminate.
This input is communicated to the IPDM E/R across the CAN communication lines. The CPU of the IPDM E/R controls the headlamp low relay coil which supplies power to the low beam headlamps.
HIGH BEAM OPERATION/FLASH-TO-PASS OPERATION
With the lighting switch in the 2ND position and placed in HIGH position, the BCM receives input requesting the headlamp high beams to illuminate. The flash to pass feature can be used any time and also sends a signal to the BCM. This input is communicated to the IPDM E/R across the CAN communication lines. The CPU of the combination meter controls the ON/OFF status off the HIGH BEAM indicator. The CPU of the IPDM E/R controls the headlamp high relay coil which supplies power to the high beam headlamps.
The combination meter receives a high beam request signal (ON) through the CAN communication lines and turns the high beam indicator lamp ON.
EXTERIOR LAMP BATTERY SAVER CONTROL
With the lighting switch (combination switch) in the 2nd position and the ignition switch is turned from ON or ACC to OFF, the battery saver feature is activated.
Under this condition, the headlamps remain illuminated for 5 minutes unless the lighting switch position is changed. If the lighting switch position is changed, then the headlamps are turned off.
This setting can be changed by CONSULT-III. Refer to EXL-30, "BATTERY SAVER : CONSULT-III Function".
Headlamp (xenon type)
System Diagram
System Description
Control of the headlamp system is dependent upon the position of the lighting
switch (combination switch).
When the lighting switch is placed in the 2nd pos ...
Daytime running light system
System Diagram
System Description
The headlamp system for Canada vehicles is equipped with a daytime light
control unit that activates the high
beam headlamps at approximately half illumination ...
Other materials:
On-vehicle repair
STARTER MOTOR
Removal and Installation
M/T MODELS
Removal
1. Disconnect the negative battery terminal.
2. Disconnect the starter motor harness connectors.
3. Remove the two starter motor bolts, using power tools.
4. Remove the starter motor.
Installation
Installation is in the reverse ...
P0507 ISC System
Description
The ECM controls the engine idle speed to a specified level via the fine
adjustment of the air, which is let into
the intake manifold, by operating the electric throttle control actuator. The
operating of the throttle valve is varied
to allow for optimum control of the engine idli ...
Main line between dlc and abs circuit
Diagnosis Procedure
INSPECTION PROCEDURE
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the following terminals and connectors for damage, bend and loose
connection (connector side
and harness side).
- Harness co ...