NISSAN TEANA 2003 Service Manual

AUTO LIGHT SYSTEM
LT-73
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6. CHECK OPTICAL SENSOR OUTPUT VOLTAGE
1. Connect BCM connector and optical sensor connector.
2. Turn ignition switch ON.
3. Check difference in the voltage between BCM and ground, when
optical sensor is illuminated and not illuminated.
CAUTION:
Optical sensor must be securely subjected to work lamp
light. If the optical sensor is insufficiently illuminated, the measured value may not satisfy the
standard.
Check result
OK >> Replace BCM. Refer to BCS-16, "Removal and Installation of BCM" .
NG >> GO TO 7.
7. CHECK BCM OUTPUT VOLTAGE
Check voltage between BCM harness connector and ground.
OK or NG
OK >> GO TO 8.
NG >> Replace BCM. Refer to BCS-16, "
Removal and Installa-
tion of BCM" .
8. CHECK OPTICAL SENSOR GROUND CIRCUIT
Check voltage between BCM harness connector and ground.
OK or NG
OK >> Replace optical sensor.
NG >> Replace BCM. Refer to BCS-16, "
Removal and Installa-
tion of BCM" .
BCM connector Terminal
GroundConditionVoltage
(Approx.)
M3 14When optical sensor
is illuminated.3.1 V or more
When optical sensor
is not illuminated.0.6 V or less
PKID0086E
BCM connector Terminal
GroundVoltage
(Approx.)
M3 17 5 V
PKID0278E
BCM connector Terminal
GroundVoltage
(Approx)
M3 18 0 V
PKID0085E

LT-74
AUTO LIGHT SYSTEM

Removal and Installation for Optical SensorBKS001OK
REMOVAL
1. Remove instrument panel. Refer to IP-10, "INSTRUMENT
PANEL ASSEMBLY" .
2. Disconnect optical sensor connector.
3. Remove optical sensor.
INSTALLATION
Installation is the reverse order of removal.
SKIB0895E

ACTIVE AFS
LT-75
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ACTIVE AFSPFP:253C0
Component Parts and Harness Connector LocationBKS002BW
System DescriptionBKS002BX
AFS (ADAPTIVE FRONT-LIGHTING SYSTEM)

Bending lamp (exclusive lamp for AFS) turn ON/OFF depending on the steering wheel angle and the vehi-
cle speed, when the headlamp LOW/HIGH lights, and the shift position is at any ranges except P.

Bending lamp supplies efficient light distribution for turning intersection and driving on the curves.

When turning to the left (right), bending lamp left (right) turn ON/OFF while driving forward or backward.
PKID0044E

LT-76
ACTIVE AFS

OUTLINE
Power is supplied at all times

to ignition relay [located in IPDM E/R (Intelligent Power Distribution Module Engine Room)], from battery
direct,

through 15A fuse (No. 71, located in IPDM E/R)

to CPU (central processing unit) in IPDM E/R,

through 15A fuse (No. 78, located in IPDM E/R)

to CPU in IPDM E/R,

through 10A fuse (No. 38, located in fuse and fusible link block)

to AFS control unit terminal 6.
With the ignition switch in the ON or START position, power is supplied

to ignition relay (located in IPDM E/R),

through 10A fuse [No. 12, located in fuse block (J/B)]

to steering angle sensor terminal 3 and

to AFS control unit terminal 1.
Ground is supplied

to IPDM E/R terminals 38 and 60

through grounds E1 and E31,

to steering angle sensor terminal 2 and

to AFS control unit terminal 4

through grounds M71 and M72.
BENDING LAMP OPERATION
Bending lamp right/left turn ON depending on the steering wheel angle and the vehicle speed under the oper-
ating condition. Bending lamp right/left turn OFF when the steering wheel is returned to the straight.

Operation condition

CAN communication control
AFS control unit is connected to CAN communication line, and receives the signal necessary for active
AFS control with CAN communication.
Steering wheel Lighting switch A/T or CVT shift positionBending lamp RH Bending lamp LH
Lamp ON Lamp ON
Turn to rightOFF, 1ST —
2ND
(LOW, HIGH)P range
Except P range×
Turn to leftOFF, 1ST —
2ND
(LOW, HIGH)P range
Except P range×
Ignition switch Headlamp status A/T or CVT shift position Steering wheel angle Vehicle speed
ONIlluminated
(LOW or HIGH)Except P rangeBending lamp turn ON/
OFF according to the
steering wheel angle.Steering wheel angle, which decides if
bending lamp turn ON, depends on the
vehicle speed.
Transmit unit Meter & A/C amp. Steering angle sensor TCM IPDM E/R
Signal name Vehicle speed signal Steering angle sensor signal TCM shift position signal

Headlamp LO beam signal

Headlamp HI beam signal

ACTIVE AFS
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When The Steering Wheel Is Turned To The Left
AFS control unit supplies power

through AFS control unit terminal 3

to front combination lamp LH terminal 9.
Ground is supplied

to front combination lamp LH terminal 10

through grounds E1 and E31.
With power and grounds supplied, the bending lamp LH illuminate.
When The Steering Wheel Is Turned To The Right
AFS control unit supplies power

through AFS control unit terminal 8

to front combination lamp RH terminal 9.
Ground is supplied

to front combination lamp RH terminal 10

through grounds E1 and E31.
With power and grounds supplied, the bending lamp RH illuminate.
CAN Communication System DescriptionBKS0041K
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 UnitBKS0041L
Refer to LAN-49, "CAN System Specification Chart" .

LT-78
ACTIVE AFS

SchematicBKS002F6
TKWM4586E

ACTIVE AFS
LT-79
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Wiring Diagram — AFS —BKS002F7
TKWM4587E

LT-80
ACTIVE AFS

TKWM4588E

ACTIVE AFS
LT-81
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TKWM4589E

LT-82
ACTIVE AFS

Terminals and Reference Values for AFS Control UnitBKS002F8
CONSULT-II Functions (ADAPTIVE LIGHT)BKS002F9
CONSULT-II can display each diagnostic item using the diagnostic test mode shown below.
CONSULT-II BASIC OPERATION
Refer to GI-34, "CONSULT-II Start Procedure" .
WORK SUPPORT
Display Item List
Notes on Steering Angle Sensor (Neutral Point) Adjustment

Be sure to adjust steering angle sensor to the neutral point before driving if any of the followings is
removed/installed or replaced: AFS control unit; Steering angle sensor; Steering system part, Suspension
system part.

Steering angle sensor neutral point adjustment should be performed by using CONSULT-II. (The adjust-
ment is not operative without CONSULT-II.)
Operation Procedure (with VDC)
Perform steering angle sensor neutral point adjustment only on VDC side. Never perform the adjustment on
ADAPTIVE LIGHT side as this may lead to VDC malfunctions. If the adjustment has been performed on AFS
side, readjust on VDC side. For steering angle sensor neutral point adjustment procedures on VDC side, refer
to BRC-40, "
Adjustment of Steering Angle Sensor Neutral Position" in “ON-VEHICLE SERVICE”.
Te r m i n a l
No.Wire
colorSignal nameMeasuring condition
Reference value
Ignition
switchOperation or condition
1 G Ignition switch (ON) ON — Battery voltage
2 L CAN-H — — —
3 Y Bending lamp (LH) ONShift the lever to any position other than P
and turn lighting switch on the 2nd position,
and then turn the steering to the left.ON Battery voltage
OFF Approx. 0 V
4 B Ground ON — Approx. 0 V
5 P CAN-L — — —
6LGBattery power supply
(bending lamp power
supply)OFF — Battery voltage
8 R Bending lamp (RH) ONShift the lever to any position other than P
and turn lighting switch on the 2nd position,
and then turn the steering to the right.ON Battery voltage
OFF Approx. 0 V
Diagnosis mode Description
WORK SUPPORT Adjusts the steering angle sensor.
SELF-DIAG RESULTS AFS control unit performs CAN communication diagnosis and self-diagnosis.
DATA MONITOR Displays AFS control unit input/output data in real time.
CAN DIAG SUPPORT MNTR Monitors communication status of CAN communication.
ACTIVE TEST AFS control unit operates bending lamp. Operation check can be performed.
ECU PART NUMBER Displays part number stored in AFS control unit.
Work item Description
ST ANG SEN ADJUSTMENT Adjusts the steering angle sensor to neutral point (straight-ahead position).