Infiniti G20 (P11). Manual — part 147
Clutch Control System
NCCL0034
Type of clutch control
Hydraulic
Clutch Master Cylinder
NCCL0035
Unit: mm (in)
Inner diameter
15.87 (5/8)
Clutch Operating Cylinder
NCCL0036
Unit: mm (in)
Inner diameter
19.05 (3/4)
Clutch Damper
NCCL0037
Unit: mm (in)
Inner diameter
19.05 (3/4)
Clutch Disc
NCCL0038
Unit: mm (in)
Model
215
Facing size (Outer dia.
×
inner dia.
×
thickness)
215
×
140
×
3.5 (8.46
×
5.51
×
0.138)
Thickness of disc assembly
With load
7.6 - 8.0 (0.299 - 0.315)
with 3,923 N (400 kg, 882 lb)
Wear limit of facing surface to rivet head
0.3 (0.012)
Runout limit of facing
1.0 (0.039)
Distance of runout check point (from the hub center)
102.5 (4.04)
Maximum backlash of spline
(at outer edge disc)
0.9 (0.035)
Clutch Cover
NCCL0039
Unit: mm (in)
Model
215
Full-load
4,904 N (500 kg, 1,103 lb)
Uneven limit of diaphragm spring toe height
0.7 (0.028)
Clutch Pedal
NCCL0040
Unit: mm (in)
Pedal height “H
1
”*
158 - 168 (6.22 - 6.61)
Pedal free play “A” (at pedal pad)
9 - 16 (0.35 - 0.63)
Clearance “C” between pedal stopper rubber and clutch interlock switch
threaded end while clutch pedal is fully depressed.
0.1 - 1.0 (0.004 - 0.039)
*: Measured from surface of dash reinforcement panel
GI
MA
EM
LC
EC
FE
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
SERVICE DATA AND SPECIFICATIONS (SDS)
Clutch Control System
CL-21
NOTES
ENGINE CONTROL SYSTEM
CONTENTS
TROUBLE DIAGNOSIS - INDEX . . . . . . . . . 8
Alphabetical & P No. Index for DTC . . . . . . ...8
PRECAUTIONS . . . . . . . . . . . . . . . .14
Supplemental Restraint System (SRS)
. . . .14
Precautions for On Board Diagnostic (OBD)
System of Engine and A/T. . . . . . . . . . .14
Engine Fuel & Emission Control System . . . . ..15
Precautions . . . . . . . . . . . . . . . . 16
Wiring Diagrams and Trouble Diagnosis. . . . ...17
PREPARATION . . . . . . . . . . . . . . . .18
Special Service Tools . . . . . . . . . . . . 18
Commercial Service Tools . . . . . . . . . . .18
ENGINE AND EMISSION CONTROL OVERALL
SYSTEM. . . . . . . . . . . . . . . . . . .20
Engine Control Component Parts Location. . . ...20
Circuit Diagram . . . . . . . . . . . . . . ..24
System Diagram . . . . . . . . . . . . . . 26
Vacuum Hose Drawing . . . . . . . . . . . ..27
System Chart . . . . . . . . . . . . . . . .28
ENGINE AND EMISSION BASIC CONTROL
SYSTEM DESCRIPTION . . . . . . . . . . . ...29
Multiport Fuel Injection (MFI) System . . . . . ...29
Distributor Ignition (DI) System . . . . . . . . .31
Air Conditioning Cut Control. . . . . . . . . ..32
Fuel Cut Control (at no load & high engine
speed) . . . . . . . . . . . . . . . . . . 33
Evaporative Emission System . . . . . . . . ...33
On Board Refueling Vapor Recovery (ORVR) . . ..39
Positive Crankcase Ventilation . . . . . . . . ..48
BASIC SERVICE PROCEDURE . . . . . . . . ...50
Fuel Pressure Release . . . . . . . . . . . ..50
Fuel Pressure Check . . . . . . . . . . . . .50
Fuel Pressure Regulator Check . . . . . . . . 51
Injector . . . . . . . . . . . . . . . . . ...51
Idle Speed/Ignition Timing/Idle Mixture Ratio
Adjustment . . . . . . . . . . . . . . . . .53
Idle Air Volume Learning . . . . . . . . . . ...65
ON BOARD DIAGNOSTIC SYSTEM
DESCRIPTION . . . . . . . . . . . . . . . ...67
Introduction . . . . . . . . . . . . . . . . 67
Two Trip Detection Logic . . . . . . . . . . ...67
Emission-related Diagnostic Information . . . . ...68
Malfunction Indicator Lamp (MIL). . . . . . . ..81
OBD System Operation Chart . . . . . . . . ...83
CONSULT-II . . . . . . . . . . . . . . . ...88
Generic Scan Tool (GST) . . . . . . . . . . 101
TROUBLE DIAGNOSIS - INTRODUCTION. . . . 103
Introduction . . . . . . . . . . . . . . . ..103
Work Flow. . . . . . . . . . . . . . . . 105
TROUBLE DIAGNOSIS - BASIC INSPECTION . . .107
Basic Inspection. . . . . . . . . . . . . ...107
TROUBLE DIAGNOSIS - GENERAL
DESCRIPTION . . . . . . . . . . . . . . . .123
DTC Inspection Priority Chart. . . . . . . . ..123
Fail-safe Chart . . . . . . . . . . . . . . .124
Symptom Matrix Chart. . . . . . . . . . . .125
CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 129
Major Sensor Reference Graph in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 131
ECM Terminals and Reference Value . . . . . .134
TROUBLE DIAGNOSIS - SPECIFICATION VALUE ..142
Description . . . . . . . . . . . . . . . ...142
Testing Condition . . . . . . . . . . . . . .142
Inspection Procedure. . . . . . . . . . . ...142
Diagnostic Procedure . . . . . . . . . . . ..143
TROUBLE DIAGNOSIS FOR INTERMITTENT
INCIDENT. . . . . . . . . . . . . . . . . .146
Description . . . . . . . . . . . . . . . ...146
Diagnostic Procedure . . . . . . . . . . . ..146
TROUBLE DIAGNOSIS FOR POWER SUPPLY. . 147
Main Power Supply and Ground Circuit. . . . ..147
DTC P0100 MASS AIR FLOW SENSOR (MAFS). ..154
Component Description . . . . . . . . . . ...154
CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 154
GI
MA
EM
LC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
ECM Terminals and Reference Value . . . . . .154
On Board Diagnosis Logic. . . . . . . . . ...155
DTC Confirmation Procedure . . . . . . . . ..155
Overall Function Check . . . . . . . . . . ...157
Wiring Diagram . . . . . . . . . . . . . . 158
Diagnostic Procedure . . . . . . . . . . . ..159
Component Inspection. . . . . . . . . . . .162
DTC P0105 ABSOLUTE PRESSURE SENSOR . . 163
Component Description . . . . . . . . . . ...163
On Board Diagnosis Logic. . . . . . . . . ...163
DTC Confirmation Procedure . . . . . . . . ..163
Diagnostic Procedure . . . . . . . . . . . ..164
DTC P0110 INTAKE AIR TEMPERATURE
SENSOR . . . . . . . . . . . . . . . . . ..165
Component Description . . . . . . . . . . ...165
On Board Diagnosis Logic. . . . . . . . . ...165
DTC Confirmation Procedure . . . . . . . . ..165
Wiring Diagram . . . . . . . . . . . . . . 167
Diagnostic Procedure . . . . . . . . . . . ..168
Component Inspection. . . . . . . . . . . .170
DTC P0115 ENGINE COOLANT TEMPERATURE
SENSOR (ECTS) (CIRCUIT) . . . . . . . . . ...171
Component Description . . . . . . . . . . ...171
CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 171
On Board Diagnosis Logic. . . . . . . . . ...171
DTC Confirmation Procedure . . . . . . . . ..172
Wiring Diagram . . . . . . . . . . . . . . 173
Diagnostic Procedure . . . . . . . . . . . ..174
Component Inspection. . . . . . . . . . . .176
DTC P0120 THROTTLE POSITION SENSOR . . ...177
Component Description . . . . . . . . . . ...177
CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 177
ECM Terminals and Reference Value . . . . . .178
On Board Diagnosis Logic. . . . . . . . . ...178
DTC Confirmation Procedure . . . . . . . . ..179
Wiring Diagram . . . . . . . . . . . . . . 183
Diagnostic Procedure . . . . . . . . . . . ..184
Component Inspection. . . . . . . . . . . .188
DTC P0125 ENGINE COOLANT TEMPERATURE
(ECT) SENSOR. . . . . . . . . . . . . . . 190
Component Description . . . . . . . . . . ...190
CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 190
On Board Diagnosis Logic. . . . . . . . . ...190
DTC Confirmation Procedure . . . . . . . . ..191
Wiring Diagram . . . . . . . . . . . . . . 192
Diagnostic Procedure . . . . . . . . . . . ..193
Component Inspection. . . . . . . . . . . .195
DTC P0130 HEATED OXYGEN SENSOR 1
(FRONT) (CIRCUIT). . . . . . . . . . . . . .196
Component Description . . . . . . . . . . ...196
CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 196
ECM Terminals and Reference Value . . . . . .196
On Board Diagnosis Logic. . . . . . . . . ...197
DTC Confirmation Procedure . . . . . . . . ..197
Overall Function Check . . . . . . . . . . ...198
Wiring Diagram . . . . . . . . . . . . . . 199
Diagnostic Procedure . . . . . . . . . . . ..200
Component Inspection. . . . . . . . . . . .202
DTC P0131 HEATED OXYGEN SENSOR 1
(FRONT) (LEAN SHIFT MONITORING) . . . . . .204
Component Description . . . . . . . . . . ...204
CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 204
ECM Terminals and Reference Value . . . . . .204
On Board Diagnosis Logic. . . . . . . . . ...205
DTC Confirmation Procedure . . . . . . . . ..205
Overall Function Check . . . . . . . . . . ...206
Diagnostic Procedure . . . . . . . . . . . ..206
Component Inspection. . . . . . . . . . . .208
DTC P0132 HEATED OXYGEN SENSOR 1
(FRONT) (RICH SHIFT MONITORING) . . . . . ..210
Component Description . . . . . . . . . . ...210
CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 210
ECM Terminals and Reference Value . . . . . .210
On Board Diagnosis Logic. . . . . . . . . ... 211
DTC Confirmation Procedure . . . . . . . . .. 211
Overall Function Check . . . . . . . . . . ...212
Diagnostic Procedure . . . . . . . . . . . ..213
Component Inspection. . . . . . . . . . . .215
DTC P0133 HEATED OXYGEN SENSOR 1
(FRONT) (RESPONSE MONITORING). . . . . ...217
Component Description . . . . . . . . . . ...217
CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 217
ECM Terminals and Reference Value . . . . . .217
On Board Diagnosis Logic. . . . . . . . . ...218
DTC Confirmation Procedure . . . . . . . . ..218
Overall Function Check . . . . . . . . . . ...219
Wiring Diagram . . . . . . . . . . . . . . 220
Diagnostic Procedure . . . . . . . . . . . ..221
Component Inspection. . . . . . . . . . . .224
DTC P0134 HEATED OXYGEN SENSOR 1
(FRONT) (HIGH VOLTAGE). . . . . . . . . . 226
Component Description . . . . . . . . . . ...226
CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 226
ECM Terminals and Reference Value . . . . . .226
On Board Diagnosis Logic. . . . . . . . . ...227
DTC Confirmation Procedure . . . . . . . . ..227
CONTENTS
(Cont’d)
EC-2
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