Infiniti G20 (P11). Manual — part 149

DTC Confirmation Procedure . . . . . . . . ..583
Overall Function Check . . . . . . . . . . ...584
Wiring Diagram . . . . . . . . . . . . . . 585
Diagnostic Procedure For M/T Models. . . . . 586
Diagnostic Procedure For A/T Models . . . . . 588

IGNITION SIGNAL. . . . . . . . . . . . . ...590

Component Description . . . . . . . . . . ...590
CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 590
ECM Terminals and Reference Value . . . . . .590
Wiring Diagram . . . . . . . . . . . . . . 591
Diagnostic Procedure . . . . . . . . . . . ..592
Component Inspection. . . . . . . . . . . .595

INJECTOR . . . . . . . . . . . . . . . . ...596

Component Description . . . . . . . . . . ...596
CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 596
ECM Terminals and Reference Value . . . . . .596
Wiring Diagram . . . . . . . . . . . . . . 597
Diagnostic Procedure . . . . . . . . . . . ..598

START SIGNAL. . . . . . . . . . . . . . ...601

CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 601
ECM Terminals and Reference Value . . . . . .601
Wiring Diagram . . . . . . . . . . . . . . 602
Diagnostic Procedure . . . . . . . . . . . ..603

FUEL PUMP. . . . . . . . . . . . . . . . .605

System Description. . . . . . . . . . . . ..605
Component Description . . . . . . . . . . ...605
CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 605
ECM Terminals and Reference Value . . . . . .606
Wiring Diagram . . . . . . . . . . . . . . 607
Diagnostic Procedure . . . . . . . . . . . ..608
Component Inspection. . . . . . . . . . . .613

POWER STEERING OIL PRESSURE SWITCH. . .614

Component Description . . . . . . . . . . ...614
CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 614

ECM Terminals and Reference Value . . . . . .614
Wiring Diagram . . . . . . . . . . . . . . 615
Diagnostic Procedure . . . . . . . . . . . ..616
Component Inspection. . . . . . . . . . . .618

REFRIGERANT PRESSURE SENSOR . . . . . ..619

Description . . . . . . . . . . . . . . . ...619
ECM Terminals and Reference Value . . . . . .619
Wiring Diagram . . . . . . . . . . . . . . 620
Diagnostic Procedure . . . . . . . . . . . ..621

ELECTRICAL LOAD SIGNAL. . . . . . . . . .624

CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 624
ECM Terminals and Reference Value . . . . . .624
Wiring Diagram . . . . . . . . . . . . . . 625
Diagnostic Procedure . . . . . . . . . . . ..627

MIL & DATA LINK CONNECTORS . . . . . . . 631

Wiring Diagram . . . . . . . . . . . . . . 631

SERVICE DATA AND SPECIFICATIONS (SDS) . ...632

Fuel Pressure Regulator. . . . . . . . . . ..632
Idle Speed and Ignition Timing. . . . . . . . 632
Ignition Coil . . . . . . . . . . . . . . . ..632
Mass Air Flow Sensor. . . . . . . . . . . ..632
Engine Coolant Temperature Sensor . . . . . ..632
EGR Volume Control Valve . . . . . . . . . .632
EGR Temperature Sensor . . . . . . . . . ...632
Fuel Pump . . . . . . . . . . . . . . . ...633
IACV-AAC Valve . . . . . . . . . . . . . ..633
Injector . . . . . . . . . . . . . . . . . .633
Resistor. . . . . . . . . . . . . . . . . 633
Throttle Position Sensor . . . . . . . . . . ..633
Heated Oxygen Sensor 1 Heater (Front) . . . . 633
Calculated Load Value. . . . . . . . . . . .633
Intake Air Temperature Sensor. . . . . . . . 633
EVAP Canister Purge Volume Control Valve . . ..633
Heated Oxygen Sensor 2 Heater (Rear). . . . .633
Crankshaft Position Sensor (OBD). . . . . . ..633
Fuel Tank Temperature Sensor . . . . . . . ...634

GI

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IDX

CONTENTS

(Cont’d)

EC-7

Alphabetical & P No. Index for DTC

NCEC0001

ALPHABETICAL INDEX FOR DTC

NCEC0001S01

Items

(CONSULT-II screen terms)

DTC*1

Reference page

Unable to access ECM

—

EC-124

ABSL PRES SEN/CIRC

P0105

EC-163

AIR TEMP SEN/CIRC

P0110

EC-165

A/T 1ST GR FNCTN

P0731

AT-128

A/T 2ND GR FNCTN

P0732

AT-135

A/T 3RD GR FNCTN

P0733

AT-141

A/T 4TH GR FNCTN

P0734

AT-147

A/T COMM LINE

P0600*2

EC-453

A/T DIAG COMM LINE

P1605

EC-580

A/T TCC S/V FNCTN

P0744

AT-163

ATF TEMP SEN/CIRC

P0710

AT-113

CKP SEN/CIRCUIT

P0335

EC-333

CKP SENSOR (COG)

P1336

EC-491

CLOSED LOOP-B1

P1148

EC-460

CLOSED TP SW/CIRC

P0510

EC-445

CMP SEN/CIRC

P0340

EC-339

COOLANT T SEN/CIRC*3

P0115

EC-171

*COOLAN T SEN/CIRC

P0125

EC-190

CYL 1 MISFIRE

P0301

EC-322

CYL 2 MISFIRE

P0302

EC-322

CYL 3 MISFIRE

P0303

EC-322

CYL 4 MISFIRE

P0304

EC-322

ECM

P0605

EC-456

EGR SYSTEM

P0400

EC-347

EGR SYSTEM

P1402

EC-505

EGR TEMP SEN/CIRC

P1401

EC-497

EGR VOL CONT/V CIR

P0403

EC-357

ENGINE SPEED SIG

P0725

AT-124

ENG OVER TEMP

P0217

EC-291

ENG OVER TEMP

P1217*2

EC-462

EVAP GROSS LEAK

P0455

EC-409

EVAP PURG FLOW/MON

P1447

EC-537

EVAP SYS PRES SEN

P0450

EC-396

EVAP SMALL LEAK

P0440

EC-368

EVAP SMALL LEAK

P1440

EC-515

TROUBLE DIAGNOSIS — INDEX

Alphabetical & P No. Index for DTC

EC-8

Items

(CONSULT-II screen terms)

DTC*1

Reference page

FUEL LEVL SEN/CIRC

P0464

EC-427

FUEL LEVL SEN/CIRC

P1464

EC-558

FUEL LEVEL SENSOR

P0461

EC-425

FUEL LEV SEN SLOSH

P0460

EC-420

FUEL SYS-LEAN/BK1

P0171

EC-272

FUEL SYS-RICH/BK1

P0172

EC-279

FUEL TEMP SEN/CIRC

P0180

EC-286

HO2S1 (B1)

P0130

EC-196

HO2S1 (B1)

P0131

EC-204

HO2S1 (B1)

P0132

EC-210

HO2S1 (B1)

P0133

EC-217

HO2S1 (B1)

P0134

EC-226

HO2S1 HTR (B1)

P0135

EC-232

HO2S2 (B1)

P0137

EC-237

HO2S2 (B1)

P0138

EC-245

HO2S2 (B1)

P0139

EC-253

HO2S2 (B1)

P0140

EC-261

HO2S2 HTR (B1)

P0141

EC-267

IACV/AAC VLV/CIRC

P0505

EC-436

KNOCK SEN/CIRC-B1

P0325*2

EC-329

L/PRES SOL/CIRC

P0745

AT-174

MAF SEN/CIRCUIT*3

P0100

EC-154

MULTI CYL MISFIRE

P0300

EC-322

NATS MALFUNCTION

P1610 - P1615*2

EL-247

NO DTC IS DETECTED. FURTHER TESTING MAY BE
REQUIRED.

P0000

—

O/R CLTCH SOL/CIRC

P1760

AT-202

P-N POS SW/CIRCUIT

P1706

EC-583

PNP SW/CIRC

P0705

AT-107

PURG VOLUME CONT/V

P0443

EC-382

PURG VOLUME CONT/V

P1444

EC-517

SFT SOL A/CIRC*3

P0750

AT-181

SFT SOL B/CIRC*3

P0755

AT-187

TCC SOLENOID/CIRC

P0740

AT-157

THERMOSTAT FNCTN

P1126

EC-458

TP SEN/CIRC A/T*3

P1705

AT-193

TRTL POS SEN/CIRC*3

P0120

EC-177

TW CATALYST SYS-B1

P0420

EC-364

GI

MA

EM

LC

FE

CL

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SU

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BT

HA

SC

EL

IDX

TROUBLE DIAGNOSIS — INDEX

Alphabetical & P No. Index for DTC (Cont’d)

EC-9

Items

(CONSULT-II screen terms)

DTC*1

Reference page

VC CUT/V BYPASS/V

P1491

EC-568

VC/V BYPASS/V

P1490

EC-562

VEH SPEED SEN/CIRC*4

P0500

EC-432

VEH SPD SEN/CIR A/T*4

P0720

AT-119

VENT CONTROL VALVE

P0446

EC-389

VENT CONTROL VALVE

P1446

EC-529

VENT CONTROL VALVE

P1448

EC-549

*1: 1st trip DTC No. is the same as DTC No.
*2: This DTC is displayed with CONSULT-II only.
*3: When the fail-safe operation occurs, the MIL illuminates.
*4: The MIL illuminates when both the “Revolution sensor signal” and the “Vehicle speed sensor signal” meet the fail-safe condition at
the same time.

TROUBLE DIAGNOSIS — INDEX

Alphabetical & P No. Index for DTC (Cont’d)

EC-10