2003 NISSAN TEANA fog light

BCM (BODY CONTROL MODULE)
BCS-7
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BCS

BCM STATUS CONTROL
BCM changes its status depending on the operation status in order to save power consumption.
1. CAN communication status

With ignition switch ON, CAN communicates with other control units normally.

Control by BCM is being operated properly.

When ignition switch is OFF, switching to sleep mode is possible.

Even when ignition switch is OFF, if CAN communication with IPDM E/R, Intelligent Key unit or unified
meter and A/C amp. is active, CAN communication status is active.
2. Sleep transient status

This status shuts down CAN communication when ignition switch is turned OFF.

It transmits sleep request signal to IPDM E/R, Intelligent Key unit, driver seat control unit and unified
meter and A/C amp.

2 seconds after CAN communication of all control units stops, sleep transient status switches to CAN
communication inactive status.
3. CAN communication inactive status

With ignition switch OFF, CAN communication is not active.

With ignition switch OFF, control performed only by BCM is active.

When all controls that BCM performs stop, CAN communication inactive status switches to sleep sta-
tus.
4. Sleep status

BCM is activated with low power mode.

CAN communication is not active.

When CAN communication operation is detected, it switches to CAN communication status.

When a state of the following switches changes, it switches to CAN communication state.
–Ignition switch (ACC, ON)
–Key switch
–Ignition knob switch
–Hazard switch
–Door lock/unlock switch
–Front door switch (driver side, passenger side)
–Rear door switch (RH, LH)
–Trunk lid opener switch
–Trunk room lamp switch
–Combination switch (passing, lighting switch 1ST position, front fog lamp)
–Remote keyless entry receiver (lock/unlock signal)

When control performed only by BCM is required by switch, it shifts to CAN communication inactive
mode.

Status of combination switch reading function is changed.

BCS-8
BCM (BODY CONTROL MODULE)

SYSTEMS CONTROLLED BY BCM DIRECTLY
NOTE:
Power supply only. No system control.
SYSTEMS CONTROLLED BY BCM AND IPDM E/R
SYSTEMS CONTROLLED BY BCM AND COMBINATION METER
SYSTEMS CONTROLLED BY BCM, COMBINATION METER AND IPDM E/R
SYSTEMS CONTROLLED BY BCM AND INTELLIGENT KEY UNIT
System Reference
Power door lock systemBL-21, "
POWER DOOR LOCK SYSTEM"
Remote keyless entry systemBL-46, "REMOTE KEYLESS ENTRY SYSTEM"
Power window system NOTEGW-17, "POWER WINDOW SYSTEM"
Sunroof NOTERF-10, "SUNROOF"
Interior room lamp timerLT-219, "INTERIOR ROOM LAMP"
Interior room lamp battery saver controlLT-222, "INTERIOR ROOM LAMP BATTERY SAVER CONTROL"
Rear fog lampLT-142, "REAR FOG LAMP"
System Reference
NATSBL-139, "
NATS(Nissan Anti-Theft System)"
Headlamp
LT- 6 , "HEADLAMP - XENON TYPE -"

LT-38, "HEADLAMP - HALOGEN TYPE -"
Auto light systemLT-64, "AUTO LIGHT SYSTEM"
Parking, license plate and tail lamps LT-196, "PARKING, LICENSE PLATE AND TAIL LAMPS"
Front fog lampLT-126, "FRONT FOG LAMP"
Exterior lamp battery saver controlLT-197, "EXTERIOR LAMP BATTERY SAVER CONTROL"
Front wiper and washer systemWW-4, "FRONT WIPER AND WASHER SYSTEM"
Headlamp washerWW-40, "HEADLAMP WASHER"
Rear window defoggerGW-54, "REAR WINDOW DEFOGGER"
System Reference
Warning chimeDI-56, "
WARNING CHIME"
Turn signal and hazard warning lampsLT-152, "TURN SIGNAL AND HAZARD WARNING LAMPS"
System Reference
Oil pressure warning lampDI-35, "
WARNING LAMPS"
System Reference
Intelligent Key systemBL-68, "
INTELLIGENT KEY SYSTEM"

BCM (BODY CONTROL MODULE)
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MAJOR COMPONENTS AND CONTROL SYSTEM
System Input Output
Remote control entry system

Remote keyless entry receiver

Key switch

Front door switch (driver side)

Front door switch (passenger side)

Rear door switch RH

Rear door switch LH

Front door lock assembly
(driver side) (door lock actuator)

Front door lock assembly
(passenger side) (door lock actuator)

Rear door lock actuator RH

Rear door lock actuator LH

Trunk lid opener actuator

Turn signal lamp (RH, LH)

Combination meter
(turn signal indicator, warning chime)
Intelligent Key system

Intelligent Key unit

Front door switch (driver side)

Front door switch (passenger side)

Rear door switch RH

Rear door switch LH

Front door lock assembly
(driver side) (door lock actuator)

Front door lock assembly
(passenger side) (door lock actuator)

Rear door lock actuator RH

Rear door lock actuator LH

Trunk lid opener actuator

Turn signal lamp (RH, LH)

Combination meter
(turn signal indicator, warning chime)
Power door lock system

Power window main switch
(door lock and unlock switch)

Front door lock assembly (driver side)
(door unlock sensor)

Key switch

Front door switch (driver side)

Front door switch (passenger side)

Rear door switch RH

Rear door switch LH

Front door lock assembly
(driver side) (door lock actuator)

Front door lock assembly
(passenger side) (door lock actuator)

Rear door lock actuator RH

Rear door lock actuator LH
Trunk lid openerTrunk lid and fuel lid opener switch
(Trunk lid opener switch)Trunk lid lock assembly
(trunk lid opener actuator)
Power supply (IGN) to power window,
sunroofIgnition power supply Power window and sunroof system
Power supply (BAT) to power window,
sunroof and power seatBattery power supply Power window, sunroof system and power seat
Headlamp Combination switch

IPDM E/R

Combination meter
(HIGH beam indicator)
Exterior lamp battery saver control

Ignition switch

Combination switchIPDM E/R
Auto light system

Optical sensor

Combination switch

Ignition switch (ACC, ON)IPDM E/R
Parking, license plate and tail lamps Combination switch

IPDM E/R

Combination meter (Tail lamp indicator)
Front fog lamp Combination switch

IPDM E/R

Combination meter
(Front fog lamp indicator)

BCS-10
BCM (BODY CONTROL MODULE)

CAN Communication UnitBKS001UH
Refer to LAN-49, "CAN System Specification Chart" .
Rear fog lamp Combination switch

Rear fog lamp

Combination meter
(Rear fog lamp indicator)
Turn signal lamp

Combination switch

Ignition switch (ON)

Turn signal lamp

Combination meter
(turn signal indicator, warning chime)
Hazard lamp Hazard switch

Turn signal lamp

Combination meter
(turn signal indicator, warning chime)
Interior room lamp timer

Key switch

Remote keyless entry receiver

Power window main switch
(door lock and unlock switch)

Front door lock assembly (driver side)

Front door switch (driver side)

Front door switch (passenger side)

Rear door switch LH

Rear door switch RH

Ignition switch (ON)

Map lamp

Personal lamp RH

Personal lamp LH

Ignition keyhole illumination
Key warning chime

Key switch

Front door switch (driver side)

Ignition switch (ON)Combination meter (warning buzzer)
Light warning chime

Combination switch

Front door switch (driver side)

Ignition switch (ON)Combination meter (warning buzzer)
Oil pressure warning lamp

IPDM E/R

Ignition switch (ON)Combination meter (warning lamp)
Front wiper and washer system

Combination switch

Combination meter

Ignition switch (ON)IPDM E/R
Headlamp washer

Headlamp washer switch

Combination switch

Ignition switch (ON)IPDM E/R
Rear window defogger

Rear window defogger switch

Ignition switch (ACC, ON)IPDM E/R
A/C switch signal

Unified meter and A/C amp.

Ignition switch (ON)ECM
Blower fan switch signal

Unified meter and A/C amp.

Ignition switch (ON)ECM System Input Output

UNIFIED METER AND A/C AMP
DI-27
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UNIFIED METER AND A/C AMPPFP:27760
System DescriptionBKS001SK

For the unified meter and A/C amp., the signal required for con-
trolling the combination meter are integrated in the A/C auto
amp.

Unified meter and A/C amp. controls each operation for A/C
auto amp. For information regarding A/C control, refer to AT C -
24, "AIR CONDITIONER CONTROL" .

Unified meter and A/C amp. inputs necessary information for
combination meter from each unit by CAN communication and
so on.

And unified meter and A/C amp. outputs these signals using
communication line (TX, RX) between unified meter and A/C
amp. and combination meter.

The signals required for the distance to empty (DTE) display are centralized in the unified meter and A/C
amp., converted into data, and sent to the display unit (with display unit) using CAN communication.

Other input signals are also sent to the ECM, TCM, BCM and display unit (with display unit) using CAN
communication.

The unified meter and A/C amp. correspond a CONSULT-II function (self-diagnostic results, CAN diag-
nostic support monitor and data monitor).
INPUT/OUTPUT SIGNALS
Between Unified Meter and A/C amp. and Combination Meter
SKIB0778E
Unit Input Output
Unified meter and A/C amp.

Seat belt buckle switch signal (Driver's side)

Parking brake signal

Illumination control nighttime required signal

Refuel status signal

Low-fuel warning lamp condition signal

Combination meter receive error signal

Delivery destination data signal

Combination meter specifications signal

Vehicle speed signal (8-pulse)

Engine speed signal

Engine coolant temperature signal

Fuel level sensor signal (resistance value)

Malfunction indicator lamp signal

ABS warning lamp signal

Brake warning lamp signal

KEY warning lamp signal (With Intelligent Key)

LOCK warning lamp signal (With Intelligent Key)

High-beam request signal

Turn indicator signal

VDC OFF indicator lamp signal (With VDC)

SLIP indicator lamp signal (With VDC)

ASCD CRUISE indicator lamp signal

ASCD SET indicator lamp signal

A/T position indicator signal

A/T CHECK warning lamp signal

CVT indicator lamp signal

CVT position indicator signal

Door switch signal

Oil pressure switch signal

Position lights request signal

Front fog light request signal

Rear fog light request signal

Buzzer output signal

DI-30
UNIFIED METER AND A/C AMP

DATA MONITOR
Operation Procedure
1. Touch “DATA MONITOR” on “SELECT DIAG MODE” screen.
2. Touch either “MAIN SIGNALS” or “SELECTION FROM MENU” on the “DATA MONITOR” screen.
3. When “SELECTION FROM MENU” is selected, touch individual
items to be monitored. When “MAIN SIGNALS” is selected,
main items will be monitored.
4. Touch “START”.
5. Touch “RECORD” while monitoring, then the status of the moni-
tored item can be recorded. To stop recording, touch “STOP”.
Display Item List
MAIN SIGNALS Monitors main signals.
SELECTION FROM MENU Selects and monitors individual signal.
SKIA8739E
Monitor item [Unit] MAIN SIGNALSSELECTION
FROM MENUContents
SPEED METER [km/h] or [mph] X XThis is the angle correction value after the speed signal from
the ABS actuator and electric unit (control unit) is converted
into the vehicle speed.
SPEED OUTPUT [km/h] or [mph] X XThis is the angle correction value before the speed signal
from the ABS actuator and electric unit (control unit) is con-
verted into the vehicle speed.
TACHO METER [rpm] X XThis is the converted value for the engine speed signal from
the ECM.
W TEMP METER [°C] or [°F] X XThis is the converted value for the engine coolant tempera-
ture signal from the ECM.
FUEL METER [lit.] X XThis is the processed value for the signal (resistance value)
from the fuel gauge.
DISTANCE [km] or [mile] X XThis is the calculated value for the speed signal from the
ABS actuator and electric unit (control unit), the signal
(resistance signal) from the fuel gauge and fuel consumption
signal from ECM.
FUEL W/L [ON/OFF] X X Indicates [ON/OFF] condition of low-fuel warning lamp.
MIL [ON/OFF] X Indicates [ON/OFF] condition of malfunction indicator lamp.
BUZZER [ON/OFF] X X Indicates [ON/OFF] condition of buzzer.
DOOR W/L [ON/OFF] X Indicates [ON/OFF] condition of door warning lamp.
HI-BEAM IND [ON/OFF] X Indicates [ON/OFF] condition of high-beam indicator.
TURN IND [ON/OFF] X Indicates [ON/OFF] condition of turn indicator.
FR FOG IND X Indicates [ON/OFF] condition of front fog lamp indicator.
RR FOG IND X Indicates [ON/OFF] condition of rear fog lamp.
OIL W/L [ON/OFF] X Indicates [ON/OFF] condition of oil pressure warning lamp.
LIGHT IND [ON/OFF] X Indicates [ON/OFF] condition of light indicator lamp.
VDC/TCS IND [ON/OFF] X Indicates [ON/OFF] condition of VDC OFF indicator lamp.
ABS W/L [ON/OFF] X Indicates [ON/OFF] condition of ABS warning lamp.
SLIP IND [ON/OFF] X Indicates [ON/OFF] condition of SLIP indicator lamp.
BRAKE W/L [ON/OFF] X Indicates [ON/OFF] condition of brake warning lamp.*
KEY G W/L [ON/OFF] X Indicates [ON/OFF] condition of key warning lamp (green).

DI-66
WARNING CHIME

Display Item List
ACTIVE TEST
Operation procedure
1. Touch “BUZZER” on “SELECT TEST ITEM” screen.
2. Touch “ACTIVE TEST” on “SELECT DIAG MODE” screen.
3. Touch the item to be tested, and check the operation.
4. During the operation check, touching “OFF” deactivates the operation.
Display Item LIst
Trouble DiagnosisBKS001T7
HOW TO PROCEED WITH TROUBLE DIAGNOSIS
1. Confirm the malfunction symptom or customer complaint.
2. Understand the outline of system. Refer to DI-56, "
System Description" .
3. Perform preliminary check. Refer to DI-66, "
PRELIMINARY CHECK" .
4. Select “METER A/C AMP” on CONSULT-II, and then perform self-diagnosis of unified meter and A/C
amp. Refer to DI-29, "
CONSULT-II Function (METER A/C AMP)" . When no malfunction detected, go to
next step 5. When malfunction detected, go to DI-17, "
SYMPTOM CHART 2" in “COMBINATION
METER”.
5. Check symptom and repair or replace the cause of malfunction.
6. Does the warning chime operate normally? If so, GO TO 7. If not, GO TO 5.
7. INSPECTION END
PRELIMINARY CHECK
1. CHECK FUSE AND FUSIBLE LINK
Check BCM fuses and fusible link for blown-out.
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" .
Monitor item [Unit] ALL SIGNALSSELECTION
FROM MENUDescription
IGN ON SW [ON/OFF] X X Indicates [ON/OFF] condition of ignition switch.
KEY ON SW [ON/OFF] X X Indicates [ON/OFF] condition of key switch.
DOOR SW-DR [ON/OFF] X X Indicates [ON/OFF] condition of front door switch (driver side).
LIGHT SW 1ST [ON/OFF] X X Indicates [ON/OFF] condition of lighting switch.
FR FOG SW [ON/OFF] X X Indicates [ON/OFF] condition of front fog lamp switch.
Test item Malfunction is detected when···
IGN KEY WARN ALMThis test is able to check key warning chime operation. Key warning chime sounds for 2 seconds
after touching “ON” on CONSULT-ll screen.
LIGHT WARN ALMThis test is able to check light warning chime operation. Light warning chime sounds for 2 seconds
after touching “ON” on CONSULT-ll screen.
Unit Power source Fuse and fusible link No.
BCMBatteryM
17
Ignition switch ON or START 1

EC-84
[QR]
TROUBLE DIAGNOSIS

INT/A TEMP SE
[°C] or [°F]××
The intake air temperature (determined by
the signal voltage of the intake air tempera-
ture sensor) is indicated.
START SIGNAL
[ON/OFF]××

Indicates start signal status [ON/OFF] com-
puted by the ECM according to the signals
of engine speed and battery voltage.
After starting the engine, [OFF] is dis-
played regardless of the starter sig-
nal.
CLSD THL POS
[ON/OFF]××

Indicates idle position [ON/OFF] computed
by ECM according to the accelerator pedal
position sensor signal.
AIR COND SIG
[ON/OFF]××

Indicates [ON/OFF] condition of the air con-
ditioner switch as determined by the air
conditioner signal.
P/N POSI SW
[ON/OFF]××

Indicates [ON/OFF] condition from the park/
neutral position (PNP) switch signal.
PW/ST SIGNAL
[ON/OFF]××

[ON/OFF] condition of the power steering
system (determined by the power steering
pressure sensor signal) is indicated.
LOAD SIGNAL
[ON/OFF]××

Indicates [ON/OFF] condition from the elec-
trical load signal.
ON: Rear window defogger switch is ON
and/or lighting switch is in 2nd position.
OFF: Both rear window defogger switch
and lighting switch are OFF.
IGNITION SW
[ON/OFF]×

Indicates [ON/OFF] condition from ignition
switch.
HEATER FAN SW
[ON/OFF]×

Indicates [ON/OFF] condition from the
heater fan switch signal.
BRAKE SW
[ON/OFF]×

Indicates [ON/OFF] condition from the stop
lamp switch signal.
INJ PULSE-B1
[msec]×

Indicates the actual fuel injection pulse
width compensated by ECM according to
the input signals.
When the engine is stopped, a cer-
tain computed value is indicated.
IGN TIMING [BTDC]×

Indicates the ignition timing computed by
ECM according to the input signals.
When the engine is stopped, a cer-
tain value is indicated.
PURG VOL C/V [%]

Indicates the EVAP canister purge volume
control solenoid valve control value com-
puted by the ECM according to the input
signals.

The opening becomes larger as the value
increases.
INT/V TIM (B1) [°CA]

Indicates [°CA] of intake camshaft
advanced angle.
INT/V SOL (B1) [%]

The control value of the intake valve timing
control solenoid valve (determined by ECM
according to the input signal) is indicated.

The advance angle becomes larger as the
value increases
AIR COND RLY
[ON/OFF]×

The air conditioner relay control condition
(determined by ECM according to the input
signals) is indicated. Monitored item [Unit]ECM
INPUT
SIG-
NALSMAIN
SIG-
NALSDescription Remarks