1998 NISSAN GT-R engine

ENGINE AND EMISSION CONTROL OVERALL SYSTEM
Component Parts Location
RB20DE (UB), RB25DE
Component name I Type I Location
I Fuel iniector I Hiah-resistance I Fuel tube
I Fuel pump I Electric, turbine I Right rear of luggage compartment (in
fuel tank)
AAC valve
IAA
unit Air reaulator
5 m 3 '
Solenoid valve (Duty control)
Wax
variable intake control solenoid valve
Variable air intake control actuator
Air jet swirl solenoid valve
[RBPODE (UB)]
Air jet swirl actuator
[RB20DE (LIB)]
Crankshaft position sensor Ring gear crankshaft position sensor
[RB20DE (UB)]
Mass air flow sensor Intake
manifold collector (Upper)
Ignition coil
Canister purge control valve
Variable valve tirnina control
solenoid valve
(? o C
Solenoid valve (ON-OFF control)
Diaphragm
Solenoid valve (ON-OFF control)
Diaphragm Photoelectric (Directly driven by cam-
shaft)
Magnetic
Hot wire
w v,
Micro-mold (Built into power transistor)
Solenoid valve (Duty control)
Solenoid valve (ON-OFF control) Upper part of rocker cover
Intake manifold collector
Lower part of intake manifold
Left front
of cylinder head
Clutch housing or converter housing
Air cleaner
Throttle position sensor [Incorporates throttle valve
switch
(All models only)]
Power steering oil pressure switch
Vehicle speed sensor
ECM
(.TCM)
ECM
& IGN coil relay Cylinder head
(Top of each spark plug)
Upper part of rocker cover
Front end of cylinder head
Engine coolant temperature sensor
Heated oxygen sensor
Knock sensor Variable
resistance
ON-OFF switch
Electromagnetic power generation
104-pin digital control
Small universal relay (2M) Throttle chamber
Thermistor
Zirconia (with heater)
Piezoelectric Rear of radiator lower hose
Transmission Passenger dashboard side
Passenger dashboard side
Behind ECM
(.TCM) Water
outlet
Exhaust manifold
Cylinder block

ENGINE AND EMISSION CONTROL OVERALL SYSTEM
Component
Parts Location (Cont'd)
" . . ., . .7
Comoonent name I TVLE a r Fuel injector High-resistance
Fuel pump
Electriclturbine
5 I unit I AAC valve I Solenoid valve (Duty control)
S Air reoulator 1 wax -1 I " - . -.
4 Ignition coil I Micro-mold (Built into power transistor)
I Canister purge control valve I Solenoid valve (Dutv control) ---- - Variable valve timing control solenold valve I Solenold valve (ONtOFF control)
Turbo pressure control solenoid valve
I Solenoid valve (OMOFF control)
Crankshaft position sensor Photoelectric
(Directly driven by cam-
shaft)
Mass air flow sensor
Hot wire
Throttle position sensor [Incorporates throttle valve
switch
(AlT model only)] Variable
resistance
Throttle motor sensor
09 Variable resistance
5 Engine coolant temperature sensor Thermistor V) Heated oxygen sensor
Zirconia (with heater)
Knock sensor Piezoelectric
Turbo pressure sensor Silicone diaphragm
Power
steering oil pressure switch
ONJOFF switch
( Vehicle speed sensor
Electromagnetic power generation
ECM
(.TCM) 104-pin digital control
Fuel pump control modulator (FPCM)
Voltage control
1 ECM L IGN co~l relay Small un~versal relay (2M) P t
.
Fuel tube
Right rear of luggage compartment (in
fuel tank)
Intake manifold collector
Cvlinder head
UOD of each soark olua)
Upper part of rocker cover
Front end of cylinder head
Next to left strut tower
Left front end of cylinder head
Air cleaner
Throttle chamber
Water outlet
Turbocharaer exhaust outlet
Cylinder
block
Upper part of rocker cover
Rear of radiator lower hose
Transmission
Passenger dashboard side
Left rear of
luaaaae comoartment
-- Passenger dashboard s~de
ECM ( TCM)

ENGINE AND E.MISSION CONTROL OVERALL SYSTEM
Vacuum
Hose Drawing
RB20DE (UB)
1. Intake manifold collector to Pressure regulator 10. Canister to Vacuum gallery
2. Intake manifold collector to Vacuum tank 11.
Air cleaner case to Vacuum gallery
3. Variable air intake control solenoid valve to Three-way 12. Vacuum tank to Three-way connector
connector
13. Air jet swirl control solenoid valve to Three-way connector 4. Air jet swirl control solenoid valve to Three-way connector
14. Air jet swirl control solenoid valve to Air jet swirl actuator
5. Variable air intake control solenoid valve to Variable air 15. Power steering air valve to Vacuum pipe
intake control actuator
6. lntake manifold collector to Fuel damper 16.
Power steering air valve to Air duct
7. Vacuum pipe to Three-way connector 17. Air jet swirl assembly to Vacuum pipe
8. Canister purge control valve to Vacuum gallery 18. Vacuum
pipe to Vacuum pipe
9. Canister purge control valve to Throttle chamber ;

A ENGINE AND EMISSION CONTROL OVERALL SYSTEM
Vacuum Hose Drawing (Cont'd)
RB25DE
+ Vacuum tank
Power steering air valve
--P Vacuum tank
lntake manifold collector
ECL178OD
1. lntake manifold collector to Pressure regulator
2. lntake manifold collector to Vacuum tank
3. Variable air intake control solenoid valve to Vacuum tank
4. lntake manifold collector to Fuel damper
5. Variable air intake control solenoid valve to Vacuum pipe
6. Canister to Vacuum gallery
7. Air cleaner case to Vacuum gallery
8. Canister purge control valve to Vacuum gallery
9. Canister purge control valve to Throttle chamber
10. Variable air intake control solenoid valve to Variable air
intake control actuator
11. Power steering air valve to Vacuum pipe
12. Power steering air valve to Air duct
13. Vacuum pipe to Vacuum pipe
14. AAC valve to Vacuum pipe

ENGINE AND EMISSION CONTROL OVERALL SYSTEM
Vacuum
Hose Drawing (Cont'd)
Canister purge control vzlve
1. lntake manifold collector to Recirculation valve
2. One-way valve to lntake manifold collector
3. Canister purge control valve to One-way valve
4. Canister purge control valve to Vacuum pipe
5. Turbo pressure sensor to Vacuum tank
6. Turbo pressure control solenoid valve.to Air tube
7. Turbo pressure control solenoid valve to Three-way
connector
8. Air inlet tube to Three-way connector
9. Swing valve controller to Three-way connector Canister
to Vacuum pipe
Pressure regulator to lntake manifold collector
Fuel damper to lntake manifold collector
lntake manifold collector to Vacuum pipe
Vacuum pipe to Vacuum pipe
Power steering air valve to Vacuum pipe
Power steering air valve to Air inlet hose
Air inlet pipe to Vacuum tank

ENGINE AND EMISSION CONTROL OVERALL SYSTEM
Circuit Diagram
RB20DE (UB).MTT, RB25DE, RB25DET.MTT MODELS
Fan motor
Auxtliary
electric
Ian
relay
-
Alr cmdll~oner compressor
Arr
conduoner
relay
14
Y Mallunct~on indcator lamp A 17
26 $7 = Power steenng 011
pressure sw~icr.
I
23
43 Engine Want
temwrature sensor B.
Tachometer drive signal Check connmr
To rear defogger relay
/ [RB2MWD TO starter motor *'""L'*" - > TO PNP switch
I TO Starter relay
[Except lor ' - RB25DE.4WDI

ENGINE AND EMISSION CONTROL OVERALL SYSTEM
Circuit Diagram (Cont'd)
RB2ODE (UB).A/T, RB25DET.AfT MODELS
".--- , - TC rear de'ogger relay 4 49
T 176
. . .- . . . . . , ,. - . . . , 59 . : . Turbine
at -.. A sensor A
Overrun clutzh
. shdt ~lenwd valve k pressure detection switch
I' Sh:H control unit Droppins revstor 8 18 9 'S 10

ENGINE AND EMISSION CONTROL OVERALL SYSTEM
ECM (-TCM) Terminal Layout
I GY
CH~'GN- (Data link connector for CONSULT)
Terminal NO.
1 Description Terminal 1 No I Description - - 1 I lgnition
signal (Power transistor drrve signal) Cyl. No. 1 1 '34 Iu1" positron switch signal -- ---- 2 1 Ignition signal (Power transistor drive signal) Cyl. No. 5 1 '35 1 ''2" posifion switch signal - - 3 1 Ignition signal (Power transistor drive signal) Cyl. No. 3 1 36 1 -
4 I ECM 6 IGN coil relay control signal 1 37 1 Throttle opening signal
[RB25DE.4WD,M/TS RB25DE.m RB25DEll
- - - -- - - - - 8 ( Ignition signal (Power transistor drive signal) Cyl. No. 2 ( '41 1 f-k swltch signal
5
6
7
11 ( AAC valve control signal ( 44 1 Crankshaft position sensor 120' (REF) signal
Tachometer
drive signal
-
Ignition signal (Power transistor drive signal) Cyl. No. 6
9
10
'38
39
'40
Ignition signal (Power transistor drive signal)
Cyl.
No. 4
-
12
13
"D" position switch signal
Neutral signal
(Parklneutral position switch)
"R" position switch signal
14
Symbols in ( ) next to terminal numbers indicate the data link connector terminals. Items marked with are available on RB20DE (UB) and RB25DET.m models only.
42
43
-
Fuel pump relay control signal
15
16
17
18
19
20 21
22 (CHK)
23
24 (IGN)
25
26
27
28
29
30
31
32
'33
- -
Sensor around
Air conditioner relay control signal 45
46
-
-
Malfunction indicator lamp
-
-
Ignition switch (START) signal
Air conditioner switch signal
Check (Diagnosis start)
Throttle position sensor signal
Ignition switch
(IGN) signal
Control unit ground
Power steering oil pressure switch signal
-
1 SB (select bit) 1 signal [RB25DET.A/Tl
1 Vehicle speed sensor signal (Vehicle speed sensor 2)
Headlamp switch signal
Ignition power supply
Control unit ground
Idle position switch signal Crankshaft
position sensor 120" (REF) signal
Crankshaft position sensor 1
" (POS) signal
47 Ring gear crankshaft position sensor signal [RB20DE (UB)]
Turbo pressure sensor signal
LRB25DEl-J
48
49
50
51
52
53
54
55
56
57
'58 59
'60 61
62
63
64
65
66 Power
supply for throttle position sensor, refrigerant pressure
sensor, and turbo pressure sensor
Rear defogger switch signal
Heated oxygen sensor signal
Throttle motor sensor signal [RB25DET]
SB
(select bit)
2 signal (RB25DET.ATJ
Motor throttle switch signal
[RB25DET]
Mass air flow sensor signal
Mass air flow sensor ground
Engine coolant temperature sensor signal
Refrigerant pressure sensor signal
Output shaft rotation sensor signal (Vehicle speed sensor 1)
Turbine sensor signal
[RB25DET.AlTj
Oil temperature sensor signal
Knock sensor signal
1
Knock sensor signal 2
PJT mode switch signal (POWER) [RB20DE (UB).A/Tl
DB (data bush) 1 signal [RB25DET.W
DB (data bush)
3 signal [RB25DET.W