light 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 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-66
AUTO LIGHT SYSTEM

Wiring Diagram — AUTO/L —BKS001OB
TKWM4576E

AUTO LIGHT SYSTEM
LT-67
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TKWM4825E

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
PKIB4960J
PKIB4958J

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. 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

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.
CONSULT-II Functions (BCM)BKS001OG
Refer to LT- 1 8 , "CONSULT-II Functions (BCM)"
Auto Light Function Does Not OperateBKS002FX
1. CHECK EXTERIOR LAMPS OPERATION
Check if the following lamps operates normally.

Headlamp

Parking lamp

License plate lamp

Tail lamp
OK or NG
OK >> GO TO 2.
NG >> Repair or replace malfunctioning parts.
2. CHECK OPTICAL SENSOR OUTPUT SIGNAL
1. Select “BCM” on CONSULT-II, and select “HEAD LAMP” on “SELECT TEST ITEM” screen.
2. Select “DATA MONITOR” on “SELECT DIAG MODE” screen.
On “OPTICAL SENSOR”, check difference in the voltage 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.
OK or NG
OK >> GO TO 3.
NG >> GO TO 5.
BCM connector Terminal
GroundContinuity
M4 52 Yes
PKIA6256E
Illuminated
OPTICAL SENSOR : 3.1 V or more
Not illuminated
OPTICAL SENSOR : 0.6 V or less
PKIA7596E

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
AB
Continuity
Connector Terminal Connector Terminal
M317
M181
Ye s 14 2
18 3
A
GroundContinuity
Connector Terminal
M317
No 14
18
PKID0277E

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