Nissan Altima 2007-2012 Service Manual: Auto light system
System Diagram
System Description
• BCM (Body Control Module) controls auto light operation according to signals from optical sensor, lighting switch and ignition switch.
• IPDM E/R (Intelligent Power Distribution Module Engine Room) operates parking, license plate, tail, front fog lamps and headlamps according to CAN communication signals from BCM.
• Optical sensor detects ambient brightness of 800 to 2,500 lux. And optical sensor converts light (lux) to voltage, then sends the optical sensor signal to BCM.
OUTLINE
The auto light control system has an optical sensor that detects outside brightness.
When the lighting switch is in AUTO position, it automatically turns ON/OFF the parking, license plate, tail, front fog lamps and headlamps in accordance with the ambient light. Sensitivity can be adjusted in four steps.
For the details of the setting, Refer to EXL-26, "COMMON ITEM : CONSULT-III Function".
Component Parts Location
1. IPDM E/R E17, E18, E200
2. BCM M16, M17, M18, M19, M21 (view with instrument panel removed)
3. Combination switch M28
4. Optical sensor M66
Component Description
AUTO LIGHT OPERATION
Applicable lamps
• Low beam headlamp
• Parking, license plate and tail lamps
• High beam headlamp (with the lighting switch in HIGH BEAM position)
• Front fog lamp (with the lighting switch in front fog lamp ON position)
When the lighting switch is in AUTO position with the ignition switch in ON position, BCM detects the AUTO LIGHT (ON) by BCM combination switch reading function. BCM turns automatically ON/OFF the applicable lamps according to ambient brightness.
NOTE: Timing for when lamps turn ON/OFF can be changed by the function setting of CONSULT-III. Refer to EXL-26, "COMMON ITEM : CONSULT-III Function".
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 ...
Front fog lamp
System Diagram
System Description
• BCM (Body Control Module) controls front fog lamp operation.
• IPDM E/R (Intelligent Power Distribution Module Engine Room) operates front
fog lamp acc ...
Other materials:
Telescopic operation
Pull the lock lever down 1 and adjust the steering
wheel forward or backward 3 to the desired
position.
Push the lock lever up 1 firmly to lock the
steering wheel in place.
WARNING
Do not adjust the steering wheel any
closer to you than is necessary for proper
steering operation and comfor ...
Warning systems switch (if so equipped)
The warning systems switch is used to temporarily
turn off the warning systems (Lane Departure
Warning (LDW) and Blind SpotWarning (BSW)
systems) that are activated using the settings
menu in the vehicle information display.
When the warning systems switch is turned off,
the indicator 1 on ...
B2609 steering status
Description
There are 2 switches in the electronic steering column lock (steering
lock/unlock switch 1 and 2). BCM compares
those two switches conditions to judge the present steering status.
DTC Logic
DTC DETECTION LOGIC
NOTE:
• If DTC B2609 is displayed with DTC U1000, first perform the ...