can NISSAN TEANA 2003 Service Manual

LT-64
AUTO LIGHT SYSTEM

AUTO LIGHT SYSTEMPFP:28491
Component Parts and Harness Connector LocationBKS001O5
System DescriptionBKS001O6

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 inside it 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 LT- 1 9 , "
WORK SUPPORT" .
Optical sensor, power is supplied

from BCM terminal 17

to optical sensor terminal 1.
Optical sensor, ground is supplied

to optical sensor terminal 3

from BCM terminal 18.
When ignition switch is turn to ON position, and
When outside brightness is darker than prescribed level, input is supplied

from optical sensor terminal 2
PKID0343E

AUTO LIGHT SYSTEM
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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)

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 and wiper switch OFF not to be fluctuated by overloaded.

Turn wiper intermittent dial position to 4 except when checking waveform or voltage of wiper inter-
mittent dial position. Wiper intermittent dial position can be confirmed on CONSULT-II. Refer to LT-
184, "DATA MONITOR" .
NOTE:
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.Terminal
No.Wire
colorSignal nameMeasuring condition
Reference value
Ignition
switchOperation or condition
4RCombination switch
input 3ONLighting, turn, wiper
switch
(Wiper intermittent
dial position 4)OFF Approx. 0 V
Lighting switch
AUTO position
Approx. 1.0 V
11 V Ignition switch (ACC) ACC — Battery voltage
14 P/B Optical sensor signal ONWhen optical sensor is illuminated
3.1 V or more
NOTE
When optical sensor is not illuminated 0.6 V or less
17 W/BOptical sensor power
supplyON — Approx. 5 V
18 P Optical sensor ground ON — Approx. 0 V
33 G/YCombination switch
output 4ONLighting, turn, wiper
switch
(Wiper intermittent
dial position 4)OFF
Approx. 7.2 V
Lighting switch
AUTO position
Approx. 1.2 V
38 R Ignition switch (ON) ON — Battery voltage
39 L CAN-H — — —
40 P CAN-L — — —
42 Y/R Battery power supply OFF — Battery voltage
52 B Ground ON — Approx. 0 V
55 W/B Battery power supply OFF — Battery voltage
PKIB4959J
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AUTO LIGHT SYSTEM
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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. Understand operation description and function description. Refer to LT- 6 4 , "
System Description" .
3. Preform the Preliminary Check. Refer to LT- 7 0 , "
Preliminary Check" .
4. Check symptom and repair or replace the cause of malfunction.
5. Does the auto light system operate normally? If YES, GO TO 6. If NO, GO TO 4.
6. INSPECTION END.
Te r m i n a l
No.Wire
colorSignal nameMeasuring condition
Reference value
Ignition
switchOperation or condition
20 R/Y Headlamp low (RH) ON Lighting switch 2ND positionOFF Approx. 0 V
ON Battery voltage
22 R/LParking, license plate and
tail lampsON Lighting switch 1ST positionOFF Approx. 0 V
ON Battery voltage
27 L/W Headlamp high (RH) ONLighting switch HIGH BEAM
position or PASS positionOFF Approx. 0 V
ON Battery voltage
28 G Headlamp high (LH) ONLighting switch HIGH BEAM
position or PASS positionOFF Approx. 0 V
ON Battery voltage
30 L Headlamp low (LH) ON Lighting switch 2ND positionOFF Approx. 0 V
ON Battery voltage
38 B Ground ON — Approx. 0 V
48 L CAN− H— — —
49 P CAN− L— — —
60 B Ground ON — Approx. 0 V

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 AND GROUND CIRCUIT
1. CHECK FUSES AND FUSIBLE LINK
Check for blown fuses and fusible link.
Refer to LT-66, "Wiring Diagram — AUTO/L —" .
OK or NG
OK >> GO TO 2.
NG >> If fuse or fusible link is blown, be sure to eliminate cause of malfunction before installing new fuse
or fusible link. Refer to PG-3, "
POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Check voltage between BCM harness connector and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
Unit Power source Fuse and fusible link No.
BCMBatteryM
17
Ignition switch ACC or ON position 6
Ignition switch ON or START position 1
IPDM E/R Battery71
72
74
76
86
Terminal Ignition switch position
(+)
(-) OFF ACC ON
BCM
connectorTerminal
M311
GroundApprox.0 VBattery
voltageBattery
voltage
38 Approx.0 V Approx.0 VBattery
voltage
M442Battery
voltageBattery
voltageBattery
voltage
55Battery
voltageBattery
voltageBattery
voltage
PKIA5204E

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>>Refer to LAN-49, "
CAN System Specifica-
tion Chart" .
4. CHECK CIRCUIT BETWEEN COMBINATION SWITCH AND BCM
With CONSULT-II
1. Select “BCM” on CONSULT-II, and select “HEAD LAMP” on “SELECT TEST ITEM” screen.
2. Select “DATA MONITOR” on “SELECT DIAG MODE” screen.
Make sure “AUTO LIGHT SW” turns ON–OFF according to light-
ing switch operation.
Without CONSULT-II
Refer to LT- 1 8 5 , "
Combination Switch Inspection" .
OK or NG
OK >> Replace BCM. Refer to BCS-16, "Removal and Installa-
tion of BCM" .
NG >> Check combination switch (lighting switch). Refer to LT- 1 8 5 , "
Combination Switch Inspection" .
5. CHECK CIRCUIT BETWEEN BCM AND OPTICAL SENSOR
1. Turn ignition switch OFF.
2. Disconnect BCM connector and optical sensor connector.
3. Check continuity between BCM harness connector (A) and opti-
cal sensor harness connector (B).
4. Check continuity between BCM harness connector (A) and
ground.
OK or NG
OK >> GO TO 6.
NG >> Repair harness or connector.
PKIA7627E
When lighting switch is in the
AUTO position: AUTO LIGHT SW ON
PKIA7595E
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Continuity
Connector Terminal Connector Terminal
M317
M181
Ye s 14 2
18 3
A
GroundContinuity
Connector Terminal
M317
No 14
18
PKID0277E

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-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).

ACTIVE AFS
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Operation Procedure (without VDC)
1. Stop the vehicle at the straight-ahead position under the unladen condition (seat 1 person on the driver's
seat).
2. Touch ADAPTIVE LIGHT” on “SELECT SYSTEM” screen.
3. Touch “WORK SUPPORT” on “SELECT DIAG MODE” screen.
4. Touch “ST ANG SEN ADJUSTMENT” on “SELECT WORK ITEM” screen.
5. Touch “START”.
CAUTION:
Never touch steering wheel while adjusting steering angle
sensor.
6. When “ADJUSTMENT COMPLETE” is displayed, touch “END”.
7. Touch “SELF-DIAG RESULTS” on “SELECT DIAG MODE”
screen.
8. Make sure that “NO DTC” is displayed.
When “ [B2520] ST ANGLE SEN CALIB” is displayed

If the steering is turned during the adjustment, perform the
adjustment again.

If any condition other than above exists, check the connection
conditions between steering angle sensor, AFS control unit,
CONSULT-II and harnesses, and then perform the adjustment
again. After the adjustment is completed, replace AFS control
unit if [B2520] is not erased from self-diagnostic results.
CAUTION:
If [U1000] CAN COMM CIRCUIT or [B2515] ST ANG SEN SIG is displayed, first refer to LT- 8 4 ,
"SELF-DIAG RESULTS" of self-diagnostic results, and then perform the diagnosis.
9. Turn ignition switch OFF, and then turn ON again.
CAUTION:
Never skip this step.
10. Drive the vehicle to the straight-ahead position, and then stop it.
11. Select “ST ANG SEN SIG” on “SELECTION FROM MENU” screen of “DATA MONITOR” of CONSULT-II.
Make sure that “ST ANG SEN SIG” is within 0 ± 2.5°. If it is other than 0 ± 2.5°, perform steps 1 to 10
again.
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