ACURA NSX 1991 Service Repair Manual
Page 1051 of 1640
THROTTLE BODY (TB)
Inspection, page 11-131
Disassembly, page 11-133
THROTTLE VALVE DASHPOT CONTROL DIAPHRAGM
Testing, page 11-135
AIR CLEANER (ACL)
Disassembly, page 11 -129
INTAKE AIR DUCT
INTAKE AIR BYPASS (IAB) CONTROL DIAPHRAGM
Troubleshooting, page 11-137
Test, page 11-139
POSITIVE CRANKCASE VENTILATION (PCV) VALVE
Inspection, page 11-151
INTAKE AIR BYPASS (IAB) VALVE BODY ASSEMBLY
Disassembly, page 11-140
THROTTLE CABLE
Inspection/Adjustment, page 11-130
Installation, page 11-130ProCarManuals.com
Page 1052 of 1640
System Description
Vacuum Connections
CONTROL
BOX
page 11-7
THROTTLE
VALVE
DASHPOT
CHECK VALVE
EVAP
PURGE CONTROL
DIAPHRAGM VALVE
EVAP CONTROL
CANISTER
TO EVAP TWO-WAY
VALVE
FRONT OF
VEHICLE
THROTTLE VALVE
DASHPOT CONTROL
DIAPHRAGM
EGR VALVE
LIFT SENSOR
FUEL PRESSURE
REGULATOR
INTAKE
AIR
BYPASS
(IAB)
DIAPHRAGM
EGR VALVEProCarManuals.com
Page 1053 of 1640
Control Box
EVAPORATIVE EMISSION
(EVAP) PURGE CONTROL SOLENOID
VALVE
Troubleshooting, page 11-154
EXHAUST GAS RECIRCULATION (EGR) CONTROL SOLENOID
VALVE
Troubleshooting,
page 11-145
EXHAUST GAS RECIRCULATION (EGR)
VACUUM CONTROL VALVE
Troubleshooting, page 11-145
MANIFOLD ABSOLUTEPRESSURE (MAP) SENSOR
Troubleshooting, page 11 -58
(cont'd)
INTAKE AIR BYPASS (IAB) VACUUM TANK
INTAKE AIR BYPASS (IAB) CHECK VALVE INTAKE AIR BYPASS
(IAB) CONTROL SOLENOID
VALVE
Troubleshooting,
page 11-137ProCarManuals.com
Page 1054 of 1640
System Description
Vacuum Connections (cont'd)
FRONT HEATED OXYGEN SENSOR (HO2S)
REAR HEATED OXYGEN SENSOR (HO2S)
MANIFOLD ABSOLUTE PRESSURE (MAP) SENSORINTAKE AIR TEMPERATURE (IAT) SENSOR
FRONT KNOCK SENSOR (KS)
REAR KNOCK SENSOR (KS) IDLE AIR CONTROL (IAC) VALVE
FAST IDLE THERMO VALVE
AIR CLEANER (ACL) FUEL INJECTORFUEL PRESSURE REGULATOR
FUEL FILTER
FUEL PUMP (FP)
FUEL TANK
THROTTLE VALVE DASHPOT CONTROL DIAPHRAGM
THROTTLE VALVE DASHPOT CHECK VALVE INTAKE AIR BYPASS (IAB) CHECK VALVE
INTAKE AIR BYPASS (IAB) VACUUM TANK
INTAKE AIR BYPASS (IAB) CONTROL SOLENOID VALVE
INTAKE AIR BYPASS (IAB) CONTROL DIAPHRAGM
FRONT THREE WAY CATALYTIC CONVERTER (TWC)
REAR THREE WAY CATALYTIC CONVERTER (TWC)
POSITIVE CRANKCASE VENTILATION (PCV) VALVE
EXHAUST GAS RECIRCULATION (EGR) VALVE
EXHAUST GAS RECIRCULATION (EGR) VALVE LIFT SENSOR
EXHAUST GAS RECIRCULATION (EGR) VACUUM CONTROL VALVE
EXHAUST GAS RECIRCULATION (EGR) CONTROL SOLENOID VALVE
EVAPORATIVE EMISSION (EVAP) CONTROL CANISTER
EVAPORATIVE EMISSION (EVAP) PURGE CONTROL SOLENOID VALVE
EVAPORATIVE EMISSION (EVAP) PURGE CONTROL DIAPHRAGM VALVE
EVAPORATIVE EMISSION (EVAP) TWO WAY VALVEProCarManuals.com
Page 1055 of 1640
System Description
Electrical Connections
FUSES
CLOCK (7.5 A)*
ACG
(120 A)**
ACG(S) (20 A)**
IG COIL (30 A)**
No. 2 (15 A)
No. 5 (10 A)
No.
4(15
A)
No. 7
(7.5
A)
In the under-hood
fuse/relay box In the engine
compartment
fuse/relay box
CKP/CYP
SENSOR
TO A/T
GEAR
POSITION
SWITCH
NEUTRAL
SWITCH
(M/T)
AUTO A/C
CONTROL
UNIT
CLUTCH
SWITCH
(M/T)
SERVICE
CHECK
CONNECTOR
A/C
PRESSURE
SWITCH A
A/C
PRESSURE
SWITCH B FUEL PUMP
RESISTORProCarManuals.com
Page 1056 of 1640
MAP
SENSOR
TP SENSOR
IGNITION
TIMING
ADJUSTER
EGR VALVE
LIFT SENSOR
ACCELERATOR
PEDAL ANGLE
SENSOR
FRONT
HO2S
REAR
HO2S
REAR FRONT
KS KS
TERMINAL LOCATION
(cont'd)
REAR VTEC
SOLENOID VALVE
FRONT VTEC
SOLENOID VALVE
FRONT
VTEC
PRESSURE
SWITCH
REAR
VTEC
PRESSURE
SWITCH
TACHOMETER
CONNECTOR
IGNITION COIL
ICMProCarManuals.com
Page 1057 of 1640
System Description
Electrical Connections (cont'd)
(To page 11-13)ProCarManuals.com
Page 1058 of 1640
(From page 11-12)
(cont'd)ProCarManuals.com
Page 1059 of 1640
System Description
Electrical Connections (cont'd)ProCarManuals.com
Page 1060 of 1640
(cont'd)
(To page 11-16)ProCarManuals.com