light NISSAN GT-R 1998 Owner's Manual

FULLY AUTOMATIC AIR CONDITIONER
Automatic Amplifier Input /Output Signal
Specifications
Measurement condition I Terminal
No. Specification
v Signal
name
Ignition
I Operation or condition
switch
OFF
I - I Approx. 12
Battery
power source
Ignition power source
lllumination
ON
I - I Approx. 12
- I Lighting switch: 1 step 1 Approx. 12
ON r Lighting switch: 1 step I Approx. o
6 1 Rear defogger ON output signal Rear
defogger switch: ON
Rear defogger switch: OFF 1
Approx. 0
Approx.
5
Rear defogger switch: ON
Rear defogger switch: OFF
1
7
Approx. 12
Approx. 0
Thermal transmitter 8 1 Rear defogger
display input signal
Compressor: ON
Compressor:
OFF
Approx. 0
Approx.
5 Compressor ON signal
ON
-I-- - - - I Approx. 0 10 1 Ground
AfP display output signal (only
when connected) Blower
fan motor: ON
Blower fan motor:
OFF
Approx. 0
Approx.
5
12 1 Actuator driver power source
ON I - 1 Approx. 12
1 3 1 ACC power source ACC I - I Approx. 12
Right after temperature adjustment
dial operation
Air mix
door actuator driver signal
Fan control signal
Fan speed: Manual
1st
ON I - I Approx. 0
21
': Refer to "Component
Parts Inspectionn.
Sensor ground

FULLY AUTOMATIC AIR CONDITIONER
Trouble Diagnosis
by Self-diagnosis Function
(Cont'd)
Step 3 AUTO SW: ON +
I
Step 1
(CW) Tum the temperature (CCW) Turn the temperature
adjustment dial. adjustment dial. I
IGN SW: OFF
AUTO SW: ON *
T
I Step 4 I AUTO SW: ON *
4 (CW) Turn the temperature (CCW) Turn the temperature
adjustment dial. adjustment dial. I
Step 2 IGN SW: OFF
AUTO SW: ON *
I
CW: Clockwise I CCW: Counterclockwise
Step 5 Detected temperature d~splay for each sensor IGN SW: OFF AUTO SW: ON
C : Each switch indicator lamp HAK0725D
SELF-DIAGNOSIS DISPLAY ITEM
Step 1 - Display segments and indicator lamp check
Check the controller switch indicator lamp and display segments.
Normal: The switch indicator lamp and display segments are illu-
minated.
Abnormal: Malfunctioning area will not be illuminated.
lllum~nated when a short- (T"e last digir ") circuit is detected.
the display code
the corresponding codes
Step 2 - Each sensor check
Display shows "2 in the step 2 mode, and then shows the judge-
ment result.
Check the data of each sensor inputted into the automatic ampli-
fier.
Normal: Display shows
"20.
Abnormal: The last digit of the display code flashes for a malfunc-
tioning sensor. At this time, if a short-circuit
is detected,
"AUTO is displayed. Furthermore, when there are more
than one malfunctioning sensor, the corresponding dis-
play codes flash twice starting with the smaller code.
The sunload sensor will judge an abnormality when there is
insufficient lighting (less than 5,000 lx) such as while being
placed indoor or during the evening.

FULLY AUTOMATIC AIR CONDITIONER
ln-vehcle sensor characterlstlc and connector I
Temperature "C HAK0669D
Ambient sensor characteristic and connector
Temperature
"C ELZ0174C
I Sunload sensor characteristic and connector
I Sunload kW/m2 (kcaVm2 h) HAK0666C
cake alr temperature sensor characlerlstrc and connector
Temperature
'C ~~~0667~1
Component Parts Inspection
IN-VEHICLE SENSOR
Disconnect the in-vehicle sensor connector. Check the resistance
between the sensor connector terminals No.
1 and 2.
AMBIENT SENSOR
Disconnect ambient sensor connector. Check the resistance
between the sensor connector terminals No.
1 and 2.
SUNLOAD SENSOR
Disconnect the sunload sensor connector.
Turn the ignition switch
ON.
Check that the voltage between the automatic amplifier con-
nector (vehicle side) terminal No.
34 and body ground, is
approx.
4.6V.
When normal, proceed to step
5.
When abnormal, the automatic amplifier is faulty. Or, the har-
ness between the automatic amplifier and
sunload sensor is
faulty. Turn the ignition switch
OFF.
Connect the sunload sensor connector.
Turn the ignition switch
ON.
Check the voltage between the automatic amplifier connector
(vehicle side) terminal
No. 34 and body ground.
When indoors, check the voltage by applying a light of approx.
60W. (Check the voltage with the light placed close to and
away from the sensor.)
The
sunload during a sunny day is equivalent to approx.
767
W/m2 (660 kcal/m2- h).
INTAKE AIR TEMPERATURE SENSOR
Disconnect the intake air temperature sensor connector. Check the
resistance between the sensor connector terminals No.
1 and 2.
THERMAL TRANSMITER
Refer to EL section ("Component Parts Inspection", "COMBINA-
TION
METER").
HA-I 8

ELECTRICAL SYSTEM
SECTION EL
CONTENTS
CENTRAL DOOR LOCK SYSTEM ................................. 2
Component Parts Location .......................................... 2
Circuit Diagram ............................................................ 2
Combination Meter (meter control unit) Input/
Output Signal Specifications
........................................ 2
Inspection before Trouble Diagnoses ......................... -3
Trouble Diagnoses ....................................................... 3
REMOTE CONTROL ENTRY SYSTEM .......................... 4
Component Parts Location .......................................... 4
Circuit Diagram ............................................................ 4
Remote Control Entry Control Unit Input/Output
Signal Specifications
.................................................... 5
System Check ............................................................. -5
Inspection before Trouble Diagnoses .......................... 6
Trouble Diagnoses ....................................................... 6
Component Parts inspection ....................................... 6
ID Code Entry Procedure ............................................ 7
POWER WINDOW SYSTEM ........................................... 8
System Description ..................................................... -8
Precautions ................................................................. -8
Component Parts Location .......................................... 8
Circuit Diagram ............................................................ 9
Power Window Main Switch Input/Output Signal
Specifications
............................................................... 9
Inspection before Trouble Diagnoses ........................ 11
Trouble Diagnoses .................................................... 11
SUNROOF SYSTEM ...................................................... 12
Component Parts Location ........................................ 12
Circuit Diagram .......................................................... 12
Sunroof Switch and Sunroof Motor Assembly
lnputiOutput Signal Specifications
............................. 12
AUTO LIGHT SYSTEM ................................................. 1 3
Component Parts Location ........................................ 13
Auto Light Control Unit Input/Output Signal
Specifications
............................................................. 13
Circuit Diagram ........................................................ 14
Trouble Diagnoses .................................................. I 4
..................................... XENON HEADLAMP SYSTEM 15
Trouble Diagnoses ..................................................... 15
IGNITION KEY-OPERATED ILLUMINATION
SYSTEM
................................................................... 7
Component Parts Location ........................................ 17
.......................................................... Circuit Diagram 17
Meter Control Unit InputlOutput Signal
....................................................... Specifications 1 7
METER ........................................................................\
18
Corn bination Meter .................................................... 18
Triple Meter ................................................................ 20
................................................ COMBINATION METER 21
.................................................... System Description 21
........................................ Component Parts Location 21
Diagnosis Function .................................................... 21
................................... Meter-related Circuit Diagram 22
..................................................... Trouble Diagnoses 23
Combination Meter InpuVOutput Signal
Specifications
............................................................ -25
..................................... Component Parts Inspection 26
TRIPLE METER ............................................................. 29
Special Service Tool ................................................... 29
........................................ Component Parts Location 29
Circuit Diagram .......................................................... 29
Triple Meter InputfOutput Signal Specifications ........ 30
Component Parts Inspection ..................................... 30
IGNITION KEY WARNING BUZZER AND LIGHT
WARNING BUZZER
...................................................... 31
Component Parts Location ........................................ 31
Circuit Diagram .......................................................... 31
Meter Control Unit InpuVOutput Signal
Specifications
............................................................. 31
FRONT WIPER .............................................................. 32
Component Parts Location ........................................ 32
Circuit Diagram .......................................................... 32
Front Wiper Input/Output Signal Specifications ........ 32

AUTO LIGHT SYSTEM
Component
Parts Location Inside the meter
-4 Auto light control unit
Auto Light Control Unit InputlOutput Signal
Specifications
Terminal No. Measuring
condition
Operation or condition
I
Signal name Specification
Ignition switch
I Light is applied to the I Approx. 12V
liaht sensor.
Tail lamp relay control
signal
Speedometer is in operation. (Vehicle speed is
approximately 40
kmlh.)
Lighting switch: AUTO
Vehicle speed signal (2 pulses)
Light is applied to the
liaht
sensor.
I
4
Light is not applied to
the light sensor.
Approx. OV
Approx.
OV
Navigation screen
dimming signal Liahtina
switch: 1 ST
- I I
I
Light is not applied to
the light sensor.
ignition power supply Approx. 12V
I - I
I Light
is applied to the I Approx. 12V
liaht sensor. Approx. 12V
Headlamp
relay con-
trol signal Lighting
switch: AUTO
Lighting switch AUTO
signal Lighting switch
ACC -
Light is not applied to
the light sensor.
Ground Approx.
OV
OFF
AUTO Approx. 12V
Approx. OV
Driver door switch sig-
n
al
ACC Approx.
OV
Approx.
OV
Approx. 12V
-
ACC power supply Driver
door switch
ACC ON
(Open)
OFF (Closed)
- I Approx. 12V

AUTO LIGHT SYSTEM
Circuit Diagram
Xenon
headlamp
relay
To clearance
lamp and
tail lamp
I---- I : High-voltage parts ----- EL-2163D
Trouble Diagnoses
SYMPTOM CHART
Symptom I Possible cause
I a Faulty auto light control unit power supply or ground harnesi
I Faulty auto light control unit
When outside
is dark, neither small lamps nor headlamps
tum
ON
by
auto light operation. [Lighting switch
(1ST
and 2ND)
is normal.]
When outside is dark, small lamps turn ON but headlamps do not turn
Faulty lighting switch to auto light control unit harness
ON by auto light operation. [Lighting switch (1 ST and 2ND) is normal.] Faulty auto light control unit
0 Faulty lighting switch Faulty lighting switch to auto light control unit harness a Faulty lighting switch ground harness
When outside is dark, headlamps turn ON but small lamps do not turn
ON by auto light operation. [Lighting switch
(1ST
and 2ND) is normal.]
Faulty lighting switch to auto light control unit hamess Faulty auto light control unit
a Neither headlamps nor small lamps turn OFF when the driver door is
opened with the ignition switch at ACC. a Headlamps and small lamps turn OFF when the ignition switch is
turned to ACC with the driver door closed.
0 While the vehicle is driven at night, headlamps go off momentarily
~~- - - pp a Faulty door switch a Faulty door switch to auto light control unit harness a Faulty door switch ground harness 0 Faulty auto light control unit
when it passes under street lamps.
0 While the vehicle is driven in the early morning or evening, headlamps
turn ON momentarily when it passes under an overpass or through a Faulty speedometer to auto light control unit harness a Faulty auto light control unit
building shadows.
During the day, neither small lamps nor headlamps turn OFF. During the day, headlamps tum OFF but small lamps do not turn OFF. a Faulty auto light control unit

XENON HEADLAMP SYSTEM
Trouble Diagnoses
DESCRIPTION
Problems with xenon headlamps are as follows:
They do not light up.
They blink.
GD
They are not bright enough.
In most cases the problems above are caused by faulty xenon bulbs.
There might be the possibility that the problems are caused by faulty HID control unit or lamp sockets.
ec
Follow the diagnostic procedure to determine what causes the problem.
PRECAUTIONS AT
Connect or disconnect connectors with the lighting switch OFF.
Do not touch harnesses, HID control unit, internal lamp, or metal part of the lamp while the lamps are
ON B2
(Lighting switch is ON).
Before verifying that the lamps are ON, install the parts to the vehicle temporarily and connect the battery
cable with
the connector on the vehicle. ST
If the electrical system is suspected to be the cause of the symptom, check for blown fuse or fusible link,
broken connectors, disconnected terminals, or faulty engagement.
Do not use wet hands when performing the trouble diagnoses.
F@
CIRCUIT DIAGRAM
, MA Xenon
headlamp
relay
To clearance
JJ$Rkj
lamp and
tail lamp
Headlamp
1 -- - -1 : High-voltage parts
Driver door SM
CAUTION:
0 Do not use a tester to diagnose the HID control unit circuit.
0 Do not disassemble the HID control unit and harnesses (bulb socket harness and control unit har-
ness).
0 Immediately after the headlamps turn ON, brightness and emission color vary. This is a normal
condition.
When a bulb has reached the end of its life, the brightness becomes extremely low, the bulb con-
tinues to blink, or the light looks reddish.

XENON HEADLAMP SYSTEM
Trouble Diagnoses (Cont'd)
DIAGNOSTIC PROCEDURE
I
FUSE, FUSIBLE LINK, AND XENON Fuse, fusible link, or xenon
HEADLAMP RELAY CHECK headlamp relay is faulty.
CONNECTOR CHECK ON THE VEHICLE Harness on the vehicle is
FOR BATTERY VOLTAGE faulty.
With lighting switch ON, check HID control
unit connector on the vehicle for battery
I voltage. I
OK
XENON HEADLAMP BULB REPLACE- Xenon bulb is faulty.
MENT
Replace the xenon headiamp bulb with a
known
good bulb and check for proper
operation.
HID CONTROL UNIT REPLACEMENT HID control unit is faulty.
Install a known good
HID control unit to
I
the xenon headlarnp and check for proper
operation.
NG
XENON HEADLAMP HOUSING ASSEM- OK, BLY REPLACEMENT
Install a known good xenon headlamp
housing assembly to the xenon
headlamp
and check for proper operation.
---
Starter in xenon headlamp
housing (boost circuit) is
faulty. (Xenon
headlamp housing
assembly
is faulty.)

COMBINATION METER
System Description
Speedometer, tachometer, odoltrip meter, fuel gauge, and
water temperature gauge are integrally controlled by the con-
trol circuit in the meter control unit.
Diagnosis function has odoltrip meter segment check, low fuel @
warning lamp check, and continuity check in the meter control
circuit and the meters (speedometer, tachometer, fuel gauge,
and water temperature gauge).
Component Parts Location
Combination meter ABS unit
ID Transfer (4WD) I H side of trunk room
I -unit connector I
/I Diagnosis Function
meter is displayed, turn the ignition switch ACC or
down the odoltrip meter switch, turn the ignition switch
/
ON.
3. Verify that 0000.0 km is displayed on the trip meter.
4. Press the odoltrip meter switch 3 times within 5 seconds.
5. All the odoltrip meter segments light up along with low fuel
warning lamp.
EL-21
SEGMENT CHECK AND LOW FUEL WARNING LAMP
CHECK

COMBINATION METER
Trouble
Diagnoses
DIAGNOSTIC PROCEDURE
I YES
Meter control unit is faulty.
Meter battery or ignition power supply is faulty.
DO
warning
lamps
on
the
meter light
up?
. No .
at the low fuel warning lamp check? The bulb
is faulty.
t
Meter control unit is faulty. I
Does the liquid crystal display operate properly at the segment check? NO
Check the attaching screw for the ' NG *F3epair malfunct~oning part and
the meter circuit check? meter that
does not operate properly. * conduct the meter circuit check again.
OK
Meter control unit is faulty.
YES
DIAGNOSIS RESULT 1
4
Symptom I Check item I Malfunctioning item
Go
to "DIAGNOSIS RESULT
1".
Low fuel warning lamp does not operate
properly. Go to
"DIAGNOSIS RESULT
2".
Any of tachometer, fuel gauge, and water
temperature gauge does not operate prop-
erly.
More than one meter out of tachometer, fuel
gauge, and water temperature gauge do not
operate properly.
Speedometer and
odohrip meter do not
operate properly. Sensor
or harness for the meter that does
Sensor circuit for the meter (warning lamp)
1 1: 1 not operate properiy
1 that does not operate properly
~ Meter control unit
Meter control unit
DIAGNOSIS RESULT 2
Symptom
Any of speedometer, tachometer, fuel gauge,
and water temperature gauge does not oper-
ate properly. Vehicle
speed sensor or harness
Meter control unit
-
Vehicle speed input signal (with TCS)
Check item
I Malfunctioning item
NG
OK
Perform "VEHICLE SPEED INPUT SIGNAL
DIAGNO-
SIS"
on the next page. (without TCS)
More than one meter out of speedometer,
tachometer, fuel gauge, and water tempera-
ture gauge
do not operate properly. Resistance
of the meter that does not
operate properly
Meter control unit
NG
OK
- -
Meter that does not operate properly
Meter control unit