2003 NISSAN TEANA Service Manual

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Page 2753 of 3502

NISSAN TEANA 2003 Service Manual AUTO LIGHT SYSTEM
LT-65
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to BCM terminal 14.
AUTO LIGHT OPERATION
Applicable lamps
Low beam headlamp
Parking, license plate and tail lamps
High beam headlamp (with the l

AUTO LIGHT SYSTEM
LT-65
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to BCM terminal 14.
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 depending on the following condition.
It turns ON applicable lamps in 3 seconds when ambient brightness is less than 1250 lux.
This lighted lamps is turned OFF in 5 seconds when ambient brightness becomes 2500 lux or higher.
Releasing Function:
Turn ignition switch to the OFF position, or
Change lighting switch to the OFF, 1ST, 2ND position.
NOTE:
Timing for when lamps turn ON/OFF can be changed by the function setting of CONSULT-II. Refer to LT- 1 9 ,
"WORK SUPPORT" .
COMBINATION SWITCH READING FUNCTION
Refer to BCS-3, "COMBINATION SWITCH READING FUNCTION" .
HEADLAMP LOW AND HIGH OPERATION (XENON TYPE)
Refer to LT- 6 , "System Description" .
HEADLAMP LOW AND HIGH OPERATION (HALOGEN TYPE)
Refer to LT- 3 8 , "System Description" .
FRONT FOG LAMP OPERATION
Refer to LT- 1 2 6 , "System Description" .
PARKING, LICENSE PLATE AND TAIL LAMPS OPERATION
Refer to LT- 1 9 6 , "System Description" .
CAN Communication System DescriptionBKS001O7
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
CAN Communication UnitBKS001O8
Refer to LAN-49, "CAN System Specification Chart" .
Major Components and FunctionsBKS001O9
Components Functions
BCM
Turns ON/OFF circuits of parking lamp, license plate lamp, tail lamp and headlamp according to signals from
optical sensor, lighting switch (AUTO), and ignition switch (ON, OFF).
Optical sensor
Converts outside brightness (lux) to voltage, and sends it to BCM. (Detects brightness of 800 to 2500 lux)

Page 2754 of 3502

NISSAN TEANA 2003 Service Manual LT-66
AUTO LIGHT SYSTEM

Wiring Diagram — AUTO/L —BKS001OB
TKWM4576E

Page 2755 of 3502

NISSAN TEANA 2003 Service Manual AUTO LIGHT SYSTEM
LT-67
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TKWM4825E

Page 2756 of 3502

NISSAN TEANA 2003 Service Manual LT-68
AUTO LIGHT SYSTEM

Terminals and Reference Values for BCMBKS001OC
CAUTION:
Check combination switch system terminal waveform under the loaded condition with lighting
switch, turn signal switch

Page 2757 of 3502

NISSAN TEANA 2003 Service Manual AUTO LIGHT SYSTEM
LT-69
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Terminals and Reference Values for IPDM E/RBKS001OD
How to Perform Trouble DiagnosisBKS001OE
1. Confirm the symptom or customer complaint.
2. Unders

Page 2758 of 3502

NISSAN TEANA 2003 Service Manual LT-70
AUTO LIGHT SYSTEM

Preliminary CheckBKS001OF
SETTING CHANGE FUNCTIONS
Sensitivity of auto light system can be adjusted using CONSULT-II. Refer to LT- 1 9 , "WORK SUPPORT" .
CHECK POWER SUPPLY

Page 2759 of 3502

NISSAN TEANA 2003 Service Manual AUTO LIGHT SYSTEM
LT-71
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3. CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.

Page 2760 of 3502

NISSAN TEANA 2003 Service Manual LT-72
AUTO LIGHT SYSTEM

3. PERFORM BCM SELF-DIAGNOSIS
Select “BCM” on CONSULT-II, and perform self-diagnosis for
“BCM”.
Displayed self
-diagnosis results
NO DTC>>GO TO 4.
CAN COMM CIRCUIT>>R

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