1998 NISSAN GT-R turn signal

FULLY AUTOMATIC AIR CONDITIONER
System Description
The fully automatic air conditioner system utilizes sensors to detect the in-vehicle temperature, ambient
temperature, temperature of air passing through the evaporator, and
sunload. The detected values are
compared with the temperature adjustment dial setting, and calculated by the microcomputer within the
automatic amplifier. The air inlet and outlet temperatures and airflow rate are adjusted in order to main-
@ tain the in-vehicle temperature.
When an abnormal pressure occurs within the cooler cycle [gauge pressure: approx.
2.7 MPa (28 kg/
cm2G)
or higher; or approx. 0.18
MPa
(1.8
kg/cm2-G)
or lower] the refrigerant pressure sensor operates,
Ec
and stops the compressor.
The
ECM turns off the air conditioner relay, and stops the compressor during engine high load.
The blower fan motor utilizes
a brushless motor, and controls the airflow with a built-in IC that recognizes AT
the driver signal (pulse) from the automatic amplifier.
Step-motor type actuators are employed for intake door, mode door, and air mix door. They are rotated in
response to the signal (pulse) step quantity transmitted from the automatic amplifier to control the target
BR
door position.

REMOTE CONTROL ENTRY SYSTEM
Remote Control Entry Control Unit
Terminal No.
InputIOutput Signal specifications
Signal name Operation or cond~t~on Specificatton
Close the driver door. (OFF) Approx.
12V Driver door
switch input signal . @ Open the driver door. (ON) Approx. OV
Close
all the doors. (OFF) Approx. 12V All door
switch input signal Ec Open one of the doors. (ON) Approx. OV
Driver door
lock actuator lock
output signal Lock with the remote control. Changes from
approx. 0 to 12V and back to approx. OV. t
Ground - Approx. OV BR Locked (OFF) Approx. 5V Driver door lock switch signal
Unlocked (ON) Approx. OV
Key-in detection switch input Insert (ON) Approx. 12V 87
signal
Ignition key Remove (OFF)
Approx. OV
ACC power supply Ignition switch to ACC Approx. 12V Rs
Passenger door and rear RH & Press the lock switch on the remote control. Changes
from approx. 5 to OV LH door lock output signal
and back to approx. 5V.
Passenger door and rear RH & Changes from approx. 5 to OV HA
LH door unlock output signal Press the unlock switch
on the remote control.
and back to approx. 5V.
Driver door lock actuator
Unlock with the remote control. Changes from approx. 0 to
unlock output signal 12V and back to approx. OV.
System Check
Easy way to confirm the func+ion of the remote control: Works
properly.
Program the remote control (A) to another vehicle
of the
same type and check if the remote control works properly. Does not work. is OK.
Turn
a radio ON. Touch the radio aerial with the remote
control (A). Press a switch on the remote control with . is heard.
the
remote
control on the aerial. Listen for noise.
(Radio frequency: around
78.6, 78.7, 78.8 MHz)
B f ' Works properly.
I
Program another remote control (6) to the vehicle
concerned and check if the remote control works properly. No noise
is heard. t The vehicle is OK.
Does not work.
Check item
Operation check
Remote control
(A) is OK. Remote control (A)
is
NG.
r The vehicle is NG. 0CC3078D
I
I System check A
Remote control
(A) is OK.
Remote control (A) is
NG.
System check B
The vehicle is OK.
Remote control (A) is NG. Program the remote control
(A) to the vehicle concerned again and check
for proper operation.
The vehicle is NG.
The vehicle is OK. Perform trouble diagnosis
to determine what causes the problem.
Check the remote control
(A) battery voltage.
The vehicle is NG. Check the
remote control (A) battery voltage and then perform trouble
diag- nosis to determine what causes the problem.

POWER WINDOW SYSTEM
System Description
When the ignition switch is turned OFF, timer function allows
the driver door power window to operate for up to approxi-
mately
15 minutes. Opening (door switch ON) and closing
(door switch OFF) the driver door or entering the ignition switch
OFF to ON signal will reset the timer.
If the driver door window is obstructed when it is going up, the
window moves down approximately
150 mm.
OPERATING CONDITIONS
The driver door window is between fully-open position and
almost fully-closed position (with the limit switch
ON).
a Automatic operation when the ignition switch is turned ON
a Automatic or manual operation when the ignition switch is
turned to any position other than ON (with the timer active)
Precautions
When the driver door window is between fully-open position
and almost fully-closed position with the limit switch
ON,
removing or installing the battery or the power window main
switch will deactivate the auto
UP mode and the timer function.
If the step above has been taken, operate the power window
switch to close the driver door glass fully. This activates the
auto
UP mode and the timer function.
Component Parts Location
) Dash panel, driver side Driver door
power window motor (limit switch and encoder built-in)
(amplifier built-in) OCC3269D

POWER WINDOW SYSTEM
Inspection before Trouble Diagnoses
Check that other systems that use the following signals work
properly.
Check that component connectors are connected properly.
Trouble Diagnoses
SYMPTOM CHART @
Timer function is not deactivated, with the
operation conditions met, when the driver
door switch is turned
ON and OFF.
switch
Limit switch circuit
The driver door glass is not reversed
when it was obstructed.
The driver door glass is reversed when it
goes up and comes near the
fullyclosed
position in the auto
UP mode. Limit
switch circuit
Encoder circuit
I
Power window main
The driver door glass is reversed as soon switch
as it starts to go up in the auto UP mode.
I Door glass slide condi-
tion
The driver door glass is reversed at the
position other than above when it
is going
up in the auto UP mode. Power window
main I Door glass slide condi-
tion Possible
cause
Faulty driver door switch to power window main switch harness AT
Faulty power window main switch
Faulty driver door power window motor (Limit switch is poorly adjusted.) BR Faulty driver door power window motor (limit switch) 0 Faulty driver door power window motor (limit switch) to power window main
switch harness
87'
Faulty power window main ~Mtch
0 Faulty driver door power window motor (Limit switch is poorly adjusted.) R8 Faulty driver door power window motor (limit switch) Faulty driver door power window motor (limit switch) to power window main
switch harness
HA
Faulty power window main switch
Faulty driver door power window motor (encoder) Faulty driver door power window motor (encoder) to power window main
switch harness
Faulty power window main switch
Foreign objects on the glass, glass run channel rubber (4-door Sedan) or
weatherstrip (2-door Coupe)
Abrasion or deformation of glass run channel rubber (4-door Sedan) or
weatherstrip (2-door Coupe)
Sash is not angled inboard or outboard properly (4-door Sedan) or glass is
not angled inboard or outboard properly (2-door Coupe)
Faulty power window main switch
Foreign objects on the glass, glass run channel rubber (4-door Sedan), or
weatherstrip (2-door Coupe)
Abrasion or deformation of glass run channel rubber (4-door Sedan) or
weatherstrip (2-door Coupe)
Sash is not angled inboard or outboard properly (4-door Sedan) or glass is
not angled inboard or outboard properly (2-door Coupe)

IGNITION KEY-OPERATED ILLUMINATION SYSTEM
Behind combination meter Component Parts Location
Meter control unit
Circuit Diagram
7, . .
& Driver door lock detection switch
T
2 1 r Passenger door SW Rear RH door SW 326
' a
Rear LH door SW
3 - -
Room lamp
IGN SW illumination
TK24 (Brown) TK20 (Brown) TK20 (White) EL-2 178D I 1 J
Meter Control Unit Input/Output Signal
Terminal No.
Specifications I I
Specification
Approx.
OV
Approx. 12V
Approx. OV
Approx. 5V
Approx. 12V
Approx. OV
Approx. 12V
Approx. 12V
Approx. OV
Approx. 12V
Approx. OV
Approx. OV
Approx. 12V
Approx. OV'
Approx. 12V
Measuring condition
Signal name Ignition
Operation or condition
switch
Driver door switch ON (Open)
OFF Driver door switch
signal OFF (Closed)
Driver door lock
sig-
Door is unlocked. (Switch ON)
nal OFF
Door is locked. (Switch OFF)
Battery OFF
-
Open a door. (ON)
Door switch signal
OFF
Close all the doors. (OFF)
Ignition power supply ON
-
Key-in detection Remove
the ignition key.
switch signal OFF
Insert the ignition key.
Ground ON
-
OFF Room lamp switch:
Insert the ignition key. Each door switch
Room lamp, ignition Neutral position ON
(Open)
OFF (Closed)
switch illumination
Remove the ignition key from the
signal
- lamp switch: Close all the doors. key cylinder.
Neutral position
Turn the ignition switch ON.

COMBINATION METER
Combination Meter Input/Output Signal -
Specifications (~ont'd)
Signal name
Vehicle speed signal
(8 pulses)
Body
ground
Ground
I--
Oil pressure sensor
signal Measuring
condi!ion
operation.
Speedometer is in operation.
(Vehicle speed is approx.
40 km~h.)
Specification
Approx.
4.8V or OV
Vehicle speed is approx. 40
ELF0978D
-- - Approx. 2.4V
ON - Approx. OV
- I - I Refer to 'Component Parts Inspection" (EL-28).
J I I Voltage of the upper part of the wave form indicates the value checked with analogue circuit tester.
- Water Fuel gaugc
temperature gauge
1 Gauge indication with shorted
Gauge
indicaion with
3.4W test lamp connected
ELF0980D
Component Parts inspection
SPEEDOMETER, TACHOMETER, FUEL GAUGE AND
WATER TEMPERATURE
GAUGE
Remove each meter from the meter control unit and check the
resistance between the terminals as shown below.
Checkina terminal I
Speedometer and I Fuel gauge and water I Resistance R
B-D I B-C I Approx. 230 - 310
tachometer
A-C
OIL PRESSURE GAUGE
Disconnect oil pressure sensor connector.
Turn the ignition switch ON, and connect test lamp and lead
wire with the meter attaching screw as shown left. Check the
gauge indication.
temperature gauge
A-C
ADD~OX.
190 - 260

REAR DEFOGGER AND HEATER MIRROR
Component
Parts Location
-- Behind combination meter
Circuit Diagram
Heater
10 A g28 81 1
Meter CIU
Rear defogger relay AIC auto ampl~f~er
. 0
z i 8 Rear defogger SW a (AC controller built-m)
mirror
u
Rear defogger TK20 (Brown) TK20 (White)
EL-2181 D
Meter Control Unit InputlOutput Signal
S~ecif ications
': It changes to approximately 12V when 15 minutes or 30 minutes pass after the ignition switch is turned ON.
Terminal No.
9
17
29
55
63
NOTE: Refer to "Auto Amplifier InputlOutput Signal Specifications".
Signal name
Battery
Rear defogger switch
signal
Ignition power supply
Ground
Rear defogger relay
control signal Specification
Approx.
12V
Approx. OV
Approx. 5V
Approx. 12V
Approx. OV
Approx. OV*
Approx. 12V
Measuring condition .
Ignition switch OFF
OFF ON
ON
ON Operation
-
Rear
defogger switch ON (with switch
pressed)
OFF (regardless of
connection of AIC auto
amplifier)
-
-
Rear defogger switch ON OFF