fog light NISSAN PRIMERA 1999 Electronic Owner's Manual

System Description
The TCU has the following functions.
INTERIOR LAMP TIMER
The interior lamp timer is controlled by the TCU.
For further information, refer to“INTERIOR, SPOT, VANITY MIRROR AND LUGGAGE ROOM LAMPS”
(EL-130).
IGNITION KEY WARNING CHIME AND LIGHT WARNING CHIME
The ignition key and light warning chime are controlled by the TCU.
For further information, refer to“WARNING CHIME”(EL-180).
REAR WINDOW DEFOGGER TIMER
Ther rear window defogger and door mirror defogger system are controlled by the TCU.
For further information, refer to“REAR WINDOW DEFOGGER AND DOOR MIRROR DEFOGGER”
(EL-207).
POWER DOOR LOCK (Super Lock)
The power door lock (super lock) is controlled by the TCU.
For further information, refer to“POWER DOOR LOCK—Super Lock”(EL-265).
MULTI-REMOTE CONTROL SYSTEM
The multi-remote control system is controlled by the TCU.
For further information, refer to“MULTI-REMOTE CONTROL SYSTEM”(EL-296).
THEFT WARNING SYSTEM
The theft warning system is controlled by the TCU.
For further information, refer to“THEFT WARNING SYSTEM”(EL-311).
TIME CONTROL UNIT (TCU)
EL-306

FUNCTION

The TCU has the following control functions.
Item Details of control
Direction indicatorsSwitches the director indicators (Left, Right or All) when the combination switch or
hazard switch is operated.
Trailer direction indicator buzzer Sounds a buzzer during direction indicator operation when towing a trailer.
Light warning buzzerSounds warning buzzer when driver’s door is opened with light switch in the 1st or
2nd position and ignition switch“OFF”.
Ignition key warning buzzerSounds warning buzzer when driver’s door is opened with key in ignition and the
driver door lock knob is moved from the“unlock”position to the“lock”position.
Rear window defogger timerTurn off rear window defogger and door mirror heater, if equipped, about 15 minutes
after the rear window defogger switch is turned“ON”.
Battery saverShuts off interior lamp in 30 minutes if any door is left open when ignition switch is
“OFF”. The battery saver will reset if ignition switch is cycled or any door is opened
or closed.
Interior lamp timerKeep interior lamp illuminated for about 30 seconds when:

driver’s door is unlocked,

the ignition is switched off,

driver’s door is opened and then closed.
The timer is cancelled, and interior lamp turns off when:

driver’s door is locked, or

ignition switch is turned“ON”.
Theft warning
systemNormal operationMonitors doors, hood, boot lid, door locks, volumetric sensors (if not excluded), igni-
tion and glass break sensors (wagon) when armed.
Flashes the direction indicators and sounds the horn for 30 seconds in case one of
the monitored sensors is triggered.
Diagnostic mode Indicates the last three alarm triggers by flashing the direction indicators.
Central door lock Centrally locks and unlocks the vehicle
Super lock Activates and de-activates the super lock system.
TIME CONTROL UNIT (TCU)
System Description (Cont’d)
EL-307

REAR WINDOW DEFOGGER TIMER
The rear window defogger and door mirror defogger system are controlled by the TCU. With the ignition
switch in the ON or START position, power is supplied

to the rear window defogger relay

to TCU terminal
1

through 10A fuses [No.5, located in the fuse block (J/B)].
Ground is supplied to terminal

14of the rear window defogger switch through body groundsM6,M26and
M28.
When the rear window defogger switch is ON, ground is supplied

through terminal
16of the rear window defogger switch

to TCU terminal
3.
Terminal

13of the TCU then supplies ground to the rear window defogger relay.
With power and ground supplied, the rear window defogger relay is energized to operate rear window
defogger and door mirror defogger for about 15 minutes.
For further information, refer to REAR WINDOW DEFOGGER DOOR and MIRROR DEFOGGER (EL-207).
IGNITION KEY WARNING BUZZER
Ground is supplied to TCU terminal
6through front driver’s side door switch when switch is in OPEN
position from body ground.
With the key in the ignition switch in the ACC or OFF position, and locking the driver’s door from the inside,
the warning buzzer will sound.
LIGHT WARNING BUZZER
Power is supplied at all times

through 30A fusible link (letterg, located in the fuse and fusible link box) (LHD models)

through 15A fuse (No.66, located in the fuse and fusible link box) (RHD models)

to lighting switch terminal
11.
Power is supplied at all times

through 7.5A fuse [No.40, located in the fuse block (J/B)]

to warning buzzer terminal
1.
With the ignition switch in the ON or START position, power is supplied

through 7.5A fuse [No.12, located in the fuse block (J/B)]

to BCM terminal
29.
Ground is supplied to TCU terminal

6through front driver’s side door switch when switch is in OPEN
position from body ground.
With the ignition switch in the ACC or OFF position, the driver’s door OPEN, and the lighting switch in the
1st or 2nd position, the warning buzzer will sound.
INTERIOR LAMP TIMER
Power is supplied at all times

through 10A fuse [No.5, located in the fuse block (J/B)]

to interior lamp terminal
1
With the ignition switch in the ON or START position, power is supplied

through 10A fuse [No.26, located in the fuse block (J/B)]

to TCU terminal
1.
When the driver’s door is unlocked, a door is opened and then closed, or the ignition is turned from“ON”
to“Acc”or“LOCK”, ground is supplied to the interior lamp terminal

2for approximately 30 seconds.
The 30 seconds timer will be cancelled if the ignition switch is turned to“ON”, or the driver’s door is locked.
TIME CONTROL UNIT (TCU)
System Description (Cont’d)
EL-308

Checks
Once in Diagnostic Mode (and after identifying the last three alarm triggers in case a theft warning system
is equipped on the vehicle), the following inputs can be tested.
USER ACTION TCU Reaction COMPONENT TESTED
Driver’s door opened from closed
(all other doors closed)Hazards flash once Driver’s door open signal
Passenger or rear door opened from closed
(all other doors closed)Hazards flash once Door open signal for opened door
Driver’s door locked from unlocked Hazards flash once Driver’s door status signal
Passenger door locked from unlocked Hazards flash once Assist door status signal
Rear doors locked from unlocked (with ultra-
sonic model)Hazards flash once Rear doors status signal
Ultrasonics cancel switch is pressed (with ultra-
sonic model)Hazards flash once U/S cancel signal
Trunk or back door is opened from closed Hazards flash once Trunk open signal
Hood is opened from closed (with ultrasonic
model)Hazards flash once Hood open signal
Hazard switch is pressed from off Hazards flash once Hazard switch signal
Turn signal switch is moved to left from off Hazards flash once Left turn signal
Turn signal switch is moved to right from off Hazards flash once Right turn signal
Key turned to lock position in door Hazards flash once * Key cylinder lock switch signal
Lighting switch turned 1st position or 2nd posi-
tion from offHazards flash once Tail lamp signal
Key put in ignition from out Hazards flash once Key in detect signal
Central unlock/Trunk release switch is pressed Hazards flash once Central unlock/Trunk release signal
External trunk release switch pressed from off Hazards flash once External trunk release switch signal
*) Hazards may flash a second time because of Driver’s door status signal change. The min. delay time between flash actions is
100ms.
In case the system does not operate as described above, check the concerned circuit for open or short.
After completion, the Diagnostic Mode can be switched off by pressing the rear defogger switch or by turn-
ing the ignition to“ON”. The hazard lamp will flash at 3Hz for 3 seconds to confirm that Diagnostic Mode
has been switched off.
TIME CONTROL UNIT (TCU)
Trouble Diagnosis (Cont’d)
EL-310

Passenger Compartment
LHD MODELS
YEL235C Time control unit
Blower
relay
Circuit
breaker-1Indicator control unit
Stop lamp switchNATS IMMU
Auto level control unit
Headlamp washer timer
Ignition
relay
Circuit breaker-2
Theft warning horn relay
Fuse block (J/B)
Rear window defogger relayAir bag diagnosis sensor unit
TCM (Transmission control module)Daytime light control unit
Fuse block (J/B)
Time control unt
Power window relay
Front fog lamp relay
Fuel pump relayA/C LOW relay, A/C MED-LOW relay, A/C MED-HIGH relay, A/C HIGH relayECM
LOCATION OF ELECTRICAL UNITS
EL-366

Wiring Diagram Codes (Cell Codes)
Use the chart below to find out what each wiring diagram code
stands for.
Code Section Wiring Diagram Name
AAC/V EC IACV-AAC Valve
ABS BR Anti-lock Brake System
ACL/SW EC Accelerator Position Switch
ADJRES EC Adjustment Resistor
A/C HA Manual Air Conditioner
A/CCUT EC Air Conditioner Cut Control
ACC/SW EC Accelerator Switch (FC)
A/T AT Automatic Transmission
AIM EL Headlamp Aiming Control
APS EC Accelerator Position Sensor
AIRREG EC IACV-Air Regulator
AT/C EC A/T Control
AUDIO EL Audio
BACK/L EL Back-up Lamp
BUZZER EL Warning Buzzer
CHARGE EL Charging System
CKPS EC Crankshaft Position Sensor
CHIME EL Warning Chime
CMPS EC Camshaft Position Sensor
COOL/F EC Cooling Fan Control
CSPS EC Control Sleeve Position Sensor
DTRL ELHeadlamp Ð With Daytime Light
System
DEF EL Rear Window Defogger
D/LOCK EL Power Door Lock
DTRL ELHeadlamp Ð With Daytime Light
System
ECTS ECEngine Coolant Temperature
Sensor
EGRC/V ECEGR and canister Control Solenoid
Valve
FCUT EC Fuel Cut Solenoid Valve
F/FOG EL Front Fog Lamp
FICD EC IACV-FICD Solenoid Valve
F/PUMP EC Fuel Pump
FTS EC Fuel Temperature Sensor
GLOW EC Quick-glow system
GOVNR EC Electric Governor
H/LAMP ELHeadlamp Ð Without Daytime
Light System
H/SEAT EL Heated Seat
HEAT HA Heater
HLC EL Headlamp Washer
HO2S EC Heated Oxygen Sensor
HORN EL Horn, Cigarette Lighter, Clock
IATS EC Intake Air Temperature Sensor
IGN/SG EC Ignition SignalCode Section Wiring Diagram Name
ILL EL Illumination
INJECT EC Injector
INT/L ELInterior, Spot and Trunk Room
Lamps
KS EC Knock Sensor
LOAD EC Load Signal
LKUP ECTorque Converter Clutch Solenoid
Valve
LOAD EC Load Signal
MAFS EC Mass Air Flow Sensor
MAIN ECMain Power Supply and Ground
Circuit
METER ELSpeedometer, Tachometer, Temp.
and Fuel Gauges
MI EC Malfunction Indicator
MIRROR EL Door Mirror
NATS EL Nissan Anti-Theft System
NLS EC Needle Lift Sensor
O2S EC Oxygen Sensor
PGC/V ECEVAP Canister Purge Control
Solenoid Valve
PLA EC Partial Load Advance Control
PNP/SW EC Park/Neutral Position Switch
POWER EL Power Supply Routing
PST/SW ECPower Steering Oil Pressure
Switch
R/FOG EL Rear Fog Lamp
SROOF EL Sun Roof
SRS RS Supplemental Restraint System
S/LOCK EL Power Door Lock Ð Super Lock
S/SIG EC Start Signal
START EL Starting System
STOP/L EL Stop Lamp
TAIL/L ELClearance, License, and Tail
Lamps
TCV EC Injection Timing Control Valve
TPS EC Throttle Position Sensor
TURN ELTurn Signal and Hazard Warning
Lamps
VSS EC Vehicle Speed Sensor
VTC EC VTC Solenoid Valve
WARN EL Warning Lamps
WINDOW EL Power Window
WIPER EL Front Wiper and Washer
WIP/R EL Rear Wiper and Washer
HOW TO READ WIRING DIAGRAMS
GI-20

FREEZING
The customer may indicate the incident goes away after the car
warms up (winter time). The cause could be related to water
freezing somewhere in the wiring/electrical system.
There are two methods to check for this. The first is to arrange
for the owner to leave his car overnight. Make sure it will get cold
enough to demonstrate his complaint. Leave the car parked out-
side overnight. In the morning, do a quick and thorough diagno-
sis of those electrical components which could be affected.
The second method is to put the suspect component into a
freezer long enough for any water to freeze. Reinstall the part
into the car and check for the reoccurrence of the incident. If it
occurs, repair or replace the component.
WATER INTRUSION
The incident may occur only during high humidity or in rainy/
snowy weather. In such cases the incident could be caused by
water intrusion on an electrical part. This can be simulated by
soaking the car or running it through a car wash.
Do not spray water directly on any electrical components.
ELECTRICAL LOAD
The incident may be electrical load sensitive. Perform diagnosis
with all accessories (including A/C, rear window defogger, radio,
fog lamps) turned on.
COLD OR HOT START UP
On some occasions an electrical incident may occur only when
the car is started cold. Or it may occur when the car is restarted
hot shortly after being turned off. In these cases you may have
to keep the car overnight to make a proper diagnosis.
SGI843 Freezing test
Water in
connector
SolenoidShort
SGI844
Water intrusion test
SGI845 Electrical load test
ªONº
Rear win-
dow defog-
gerLight switch A/C
HOW TO PERFORM EFFICIENT DIAGNOSIS
FOR AN ELECTRICAL INCIDENT
Incident Simulation Tests (Cont'd)
GI-28