diagram NISSAN GT-R 1998 User Guide

TROUBLE DIAGNOSES
Circuit Diagram (Cont'd)
Data link connector for C0NS;ILT
Engine speed signal -
i? Throttle ~otal controi port&-2 s-2 33 7'' ELM I E - , 10
AT mode SW & '' 19
(2WD)
1- 1 I I Throttle msition sensor
I I Vehicle speed sensor 1
Turbine sensor 38 -
Throttle position SW 2 r I- 16
L TO IGN SW I PNPSW
To starter relay 4-1 34 - 27
A i 26
n I IGN IOA ID OFF 1ND.L AT> I T 22 I Shift CIU
ATN 1 987D

BRAKE SYSTEM
SECTION B R
CONTENTS
ANTI-LOCK BRAKE SYSTEM ........................................ 2
Fail-safe Function ........................................................ 2
System Diagram .......................................................... 2
Circuit Diagram ............................................................ 3
Component Parts Location .......................................... 4
Control Unit Input/Output Signal Specifications .......... 5
Precautions for Trouble Diagnosis ..... ......................... 7
Basic Inspection ........................................................... 7
CONSULT
.................................................................... 8
Self-diagnosis ...... .. . .. .. .... . . .. . . .. .. .. . . . ..... . .. . . .... .. .. . . ... .. . . -14
TCSIABS SYSTEM ........................................................ 17
System Description.
.. ............................... .................. 17
System Diagram
..................... . .................................. 1 8
Component Parts Location ........................................ 19
Circuit Diagram .......................................................... 20
Control Unit InpuVOutput Signal Specifications .. ...... 21
Precautions for Trouble Diagnosis
............................ 26
Basic Inspection.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -26
CONSULT for TCS/ABS Control Unit Control
System
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -27
Self-diagnosis for TCSfABS Control Unit Control
System
. . . . . . . . . . .. . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... . -34
CONSULT for Throttle Control Unit Control
System
. ... ... . .... . . . .. . . . .. . ... . . ... . .. . . . . . . .. . . . ... ... . . .. . . .. . . . .. . . . . .. -37
Self-diagnosis for Throttle Control Unit Control
System
. .. . . . . . . .. ... . .. . . . .. .. .. . . . . . . .. .. . . . ... . . . . . . . .. . . .. . . .. . . . . . . ... . . -41

ANTI-LOCK BRAKE SYSTEM
Fail-safe Function
If any malfunction is detected in the system, the ABS warning lamp
in the instrument panel is turned on with the ABS deactivated and
the vehicle's brake system reverts to normal operation.
System Diagram
ABS control uni: Actuator
Front lefl wheel sensor
Rear wheel Sensor Front
right inlet solenoid valve 1 I -
L ' Data ltnk connector
for CONSULT
Front right outlet solenold valve
Front lett rnlet solenoid vJve
Front left cutlet solenoid valve
r i Rear inlet solenold valve
Contrd
circuit I
Rear outlet solenoid valve
-A Motor (motor relay)
-- Actuator relay
Faii-safe
circuit
TrO~ble
diagnos~s
circuit ABS
warning lamp

ANTI-LOCK BRAKE SYSTEM
Circuit Diagram
To combination meter
I Stop lamp SW
I ABS wamlng lamp i
stop lamp 9
Wheel
sensor i connector &
FL
FR
Rea Motor relay
. FIL - 8 30A
I 11: Actuator
relay I
ABS CIU
To data link connector for CONSULT 1 RX "8 - 12
FR OUT SN fm
Rear OUT SN
Rear IN SN
27 10 ABS actuator :
ABS actuator connector
-
ABS CN connector

TCSIABS SYSTEM
System Description (Cont'd)
Parts that make throttle control inoperative
Malfunction code No.
11
12
13
91
32 I
Throttle motor return spring (Return spring is bro-
ken.) Malfunctioning part
Throttle position sensor circuit
Throttle motor sensor circuit Circuit for
the communication line
(DKR line)
between
TCSIABS control unit and throttle control
unit
Actuator system (Motor circuit is open or throttle
L I
22
23
24
Parts that make throttle control operative
motor intermittently works.)
Throttle motor drive system (overcurrent)
Throttle motor relay circuit (shorted)
Throttle motor relay circuit (open)
System Diagram
Secondary throttle posrt~on sensor value - - C; Front nght C CI) - ul wheel sensor , Throttle control unrt 0 - CI, -
$ Rear ngh:
g 5 wheel sensor c 0 m E
000000
Total control stgnal for engrne, AIT and TCS/ABS (multrpie communication)
TCSlABS control unrt
Rear lett
whee! sensor
TCS OFF swtch
Front left
wheei sensor
-+ SLIP 1ndrca:or Lamp '
----c TCS OFF rndcator lamp
c A9S warnlns lamp BR-0227D
Malfunction code No.
31
33
Malfunctioning parts
Starter signal circuit (shorted)
Paridneutral
position switch circuit (open or
shorted)

STEERING SYSTEM
SECTION ST
CONTENTS
.......... ELECTRIC SUPER HICAS 2 Control Unit Input/Output Signal Specifications 5 RS ..............................................
....................................................... ............................................................. Pre-inspection -2 Preliminary Check -7
System Description ...................................................... 2 Trouble Diagnosis with CONSULT .............................. 7 M!gJ
....................... Com~onent Parts Location .......................................... 3 Trouble Diagnosis with Self-diagnosis 12
Circuit Diagram ............................................................ 4 Symptom Chalt .......................................................... 14

ELECTRIC SUPER HICAS
Circuit Diagram
Sensor 1 signal X E
- cu Sensor 2 signal
CU m f Neutral signal

RESTRAINT SYSTEM
SECTION RS
CONTENTS
TROUBLE DIAGNOSES - Supplemental
Restraint
System (SRS) ................................................. 2
Component Parts Location .......................................... 2
Precautions ................................................................. -2
Circuit Diagram ............................................................ 2
....................................................... Preliminary Check .3
Trouble Diagnoses with CONSULT ............................. 3
........................ Trouble Diagnoses without CONSULT
............................................................ Symptom Chart 9
..................................... Component Parts Inspection 10 T? 21 -3

TROUBLE DIAGNOSES - supplemental Restraint System (SRS)
Component Parts Location
Passenger air bag module
Diagnos~s
sensor
unit Driver air bag module
S~de
air
bag nodule
Satell~te sensor Seat belt pre-tensloner SRB0568D
Precautions
To perform system diagnosis, use self-diagnosis function and
CONSULT.
Do not use electrical test equipment such as a circuit tester
because
any wrong operation caused by a weak electric cur-
rent
of a tester must be prevented.
Circuit Diagram

HEATER &
AIR CONDITIONER
CONTENTS
HA SECTION
............................................................. COOLER CYCLE 2
Deodorizing Clean Filter .............................................. 2
FULLY AUTOMATIC AIR CONDITIONER ...................... 3
System Description ...................................................... 3
Component Parts Location .......................................... 4
Circuit Diagram ............................................................ 5
Automatic Amplifier Input /Output Signal
Specifications
.............................................................. .6
GI
EG
Performance Test ......................................................... 8 Rs
Trouble Diagnosis by Gauge Pressure ..................... 10
.......... Trouble Diagnosis by Self-diagnosis Function 11
Magnet Clutch System Check ................................... 15
Blower Fan Motor System Check 15
I ..............................
Actuator System Check ............................................. 16 EL
Trouble Diagnosis for Each Symptom ....................... 17
Component Parts Inspection ..................................... 18 SD