Index Infiniti Infiniti Q45 - service repair manual 2006 year

Search copyright infringement

Content .. 350 351 352 353 ..

Infiniti Q45. Manual - part 352

ON BOARD DIAGNOSTIC (OBD) SYSTEM

EC-47

C

D

E

F

G

H

I

J

K

L

M

A

EC

ON BOARD DIAGNOSTIC (OBD) SYSTEM

PFP:00028

Introduction

NBS002WA

The ECM has an on board diagnostic system, which detects malfunctions related to engine sensors or actua-
tors. The ECM also records various emission-related diagnostic information including:

The above information can be checked using procedures listed in the table below.

×

: Applicable

—: Not applicable

*: When DTC and 1st trip DTC simultaneously appear on the display, they cannot be clearly distinguished from each other.

The malfunction indicator lamp (MIL) on the instrument panel lights up when the same malfunction is detected
in two consecutive trips (Two trip detection logic), or when the ECM enters fail-safe mode. (Refer to

"Fail-Safe Chart"

Two Trip Detection Logic

NBS002WB

When a malfunction is detected for the first time, 1st trip DTC and 1st trip Freeze Frame data are stored in the
ECM memory. The MIL will not light up at this stage. <1st trip>
If the same malfunction is detected again during the next drive, the DTC and Freeze Frame data are stored in
the ECM memory, and the MIL lights up. The MIL lights up at the same time when the DTC is stored. <2nd
trip> The “trip” in the “Two Trip Detection Logic” means a driving mode in which self-diagnosis is performed
during vehicle operation. Specific on board diagnostic items will cause the ECM to light up or blink the MIL,
and store DTC and Freeze Frame data, even in the 1st trip, as shown below.

×

: Applicable

—: Not applicable

When there is an open circuit on MIL circuit, the ECM cannot warn the driver by lighting up MIL when there is
malfunction on engine control system.

Emission-related diagnostic information

Diagnostic service

Diagnostic Trouble Code (DTC)

Service $03 of SAE J1979

Freeze Frame data

Service $02 of SAE J1979

System Readiness Test (SRT) code

Service $01 of SAE J1979

1st Trip Diagnostic Trouble Code (1st Trip DTC)

Service $07 of SAE J1979

1st Trip Freeze Frame data

Test values and Test limits

Service $06 of SAE J1979

Calibration ID

Service $09 of SAE J1979

DTC

1st trip DTC

Freeze

Frame data

1st trip Freeze

Frame data

SRT code

SRT status

Test value

CONSULT-II

×

×

×

×

×

×

—

GST

×

×

×

—

×

×

×

ECM

×

×

*

—

—

—

×

—

Items

MIL

DTC

1st trip DTC

1st trip

2nd trip

1st trip

displaying

2nd trip

displaying

1st trip

displaying

2nd trip

display-

ing

Blinking

Lighting

up

Blinking

Lighting

up

Misfire (Possible three way cata-
lyst damage) — DTC: P0300 -
P0308 is being detected

×

—

—

—

—

—

×

—

Misfire (Possible three way cata-
lyst damage) — DTC: P0300 -
P0308 is being detected

—

—

×

—

—

×

—

—

One trip detection diagnoses
(Refer to

EC-48, "EMISSION-

RELATED DIAGNOSTIC INFOR-
MATION ITEMS"

.)

—

×

—

—

×

—

—

—

Except above

—

—

—

×

—

×

×

—

EC-48

ON BOARD DIAGNOSTIC (OBD) SYSTEM

Therefore, when electrical controlled throttle and part of ECM related diagnoses are continuously detected as
NG for 5 trips, ECM warns the driver that engine control system malfunctions and MIL circuit is open by means
of operating fail-safe function.
The fail-safe function also operates when above diagnoses except MIL circuit are detected and demands the
driver to repair the malfunction.

Emission-related Diagnostic Information

NBS002WC

EMISSION-RELATED DIAGNOSTIC INFORMATION ITEMS

×

:Applicable —: Not applicable

Engine operating condition in fail-safe mode

Engine speed will not rise more than 2,500 rpm due to the fuel cut

Items

(CONSULT-II screen terms)

DTC*

1

SRT code

Test value/

Test limit

(GST only)

Trip

MIL

Reference

page

CONSULT-II

GST*

2

ECM*

3

CAN COMM CIRCUIT

U1000

1000*

4

—

—

1

×

CAN COMM CIRCUIT

U1001

1001*

4

—

—

2

—

CONTROL UNIT(CAN)

U1010

1010

—

—

1

×

NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.

P0000

0000

—

—

—

Flashing*

8

—

INT/V TIM CONT-B1

P0011

0011

—

—

2

×

INT/V TIM CONT-B2

P0021

0021

—

—

2

×

A/F SEN1 HTR (B1)

P0031

0031

—

×

2

×

A/F SEN1 HTR (B1)

P0032

0032

—

×

2

×

HO2S2 HTR (B1)

P0037

0037

—

×

2

×

HO2S2 HTR (B1)

P0038

0038

—

×

2

×

A/F SEN1 HTR (B2)

P0051

0051

—

×

2

×

A/F SEN1 HTR (B2)

P0052

0052

—

×

2

×

HO2S2 HTR (B2)

P0057

0057

—

×

2

×

HO2S2 HTR (B2)

P0058

0058

—

×

2

×

INT/V TIM V/CIR-B1

P0075

0075

—

—

2

×

INT/V TIM V/CIR-B2

P0081

0081

—

—

2

×

MAF SEN/CIRCUIT

P0101

0101

—

—

2

×

MAF SEN/CIRCUIT

P0102

0102

—

—

1

×

MAF SEN/CIRCUIT

P0103

0103

—

—

1

×

IAT SEN/CIRCUIT

P0112

0112

—

—

2

×

IAT SEN/CIRCUIT

P0113

0113

—

—

2

×

ECT SEN/CIRC

P0117

0117

—

—

1

×

ECT SEN/CIRC

P0118

0118

—

—

1

×

TP SEN 2/CIRC

P0122

0122

—

—

1

×

TP SEN 2/CIRC

P0123

0123

—

—

1

×

ECT SENSOR

P0125

0125

—

—

2

×

IAT SENSOR

P0127

0127

—

—

2

×

THERMSTAT FNCTN

P0128

0128

—

—

2

×

A/F SENSOR1 (B1)

P0130

0130

—

×

2

×

A/F SENSOR1 (B1)

P0131

0131

—

×

2

×

A/F SENSOR1 (B1)

P0132

0132

—

×

2

×

A/F SENSOR1 (B1)

P0133

0133

×

×

2

×

HO2S2 (B1)

P0137

0137

×

×

2

×

ON BOARD DIAGNOSTIC (OBD) SYSTEM

EC-49

C

D

E

F

G

H

I

J

K

L

M

A

EC

HO2S2 (B1)

P0138

0138

×

×

2

×

HO2S2 (B1)

P0139

0139

×

×

2

×

A/F SENSOR1 (B2)

P0150

0150

—

×

2

×

A/F SENSOR1 (B2)

P0151

0151

—

×

2

×

A/F SENSOR1 (B2)

P0152

0152

—

×

2

×

A/F SENSOR1 (B2)

P0153

0153

×

×

2

×

HO2S2 (B2)

P0157

0157

×

×

2

×

HO2S2 (B2)

P0158

0158

×

×

2

×

HO2S2 (B2)

P0159

0159

×

×

2

×

FUEL SYS-LEAN-B1

P0171

0171

—

—

2

×

FUEL SYS-RICH-B1

P0172

0172

—

—

2

×

FUEL SYS-LEAN-B2

P0174

0174

—

—

2

×

FUEL SYS-RICH-B2

P0175

0175

—

—

2

×

FTT SENSOR

P0181

0181

—

—

2

×

FTT SEN/CIRCUIT

P0182

0182

—

—

2

×

FTT SEN/CIRCUIT

P0183

0183

—

—

2

×

TP SEN 1/CIRC

P0222

0222

—

—

1

×

TP SEN 1/CIRC

P0223

0223

—

—

1

×

MULTI CYL MISFIRE

P0300

0300

—

—

2

×

CYL 1 MISFIRE

P0301

0301

—

—

2

×

CYL 2 MISFIRE

P0302

0302

—

—

2

×

CYL 3 MISFIRE

P0303

0303

—

—

2

×

CYL 4 MISFIRE

P0304

0304

—

—

2

×

CYL 5 MISFIRE

P0305

0305

—

—

2

×

CYL 6 MISFIRE

P0306

0306

—

—

2

×

CYL 7 MISFIRE

P0307

0307

—

—

2

×

CYL 8 MISFIRE

P0308

0308

—

—

2

×

KNOCK SEN/CIRC-B1

P0327

0327

—

—

2

—

KNOCK SEN/CIRC-B1

P0328

0328

—

—

2

—

KNOCK SEN/CIRC-B2

P0332

0332

—

—

2

—

KNOCK SEN/CIRC-B2

P0333

0333

—

—

2

—

CKP SEN/CIRCUIT

P0335

0335

—

—

2

×

CMP SEN/CIRC-B1

P0340

0340

—

—

2

×

TW CATALYST SYS-B1

P0420

0420

×

×

2

×

TW CATALYST SYS-B2

P0430

0430

×

×

2

×

EVAP PURG FLOW/MON

P0441

0441

×

×

2

×

EVAP SMALL LEAK

P0442

0442

×

×

2

×

PURG VOLUME CONT/V

P0443

0443

—

—

2

×

PURG VOLUME CONT/V

P0444

0444

—

—

2

×

PURG VOLUME CONT/V

P0445

0445

—

—

2

×

VENT CONTROL VALVE

P0447

0447

—

—

2

×

VENT CONTROL VALVE

P0448

0448

—

—

2

×

Items

(CONSULT-II screen terms)

DTC*

1

SRT code

Test value/

Test limit

(GST only)

Trip

MIL

Reference

page

CONSULT-II

GST*

2

ECM*

3

EC-50

ON BOARD DIAGNOSTIC (OBD) SYSTEM

EVAP SYS PRES SEN

P0452

0452

—

—

2

×

EVAP SYS PRES SEN

P0453

0453

—

—

2

×

EVAP GROSS LEAK

P0455

0455

—

—

2

×

EVAP VERY SML LEAK

P0456

0456

×

*

7

×

2

×

FUEL LEV SEN SLOSH

P0460

0460

—

—

2

×

FUEL LEVEL SENSOR

P0461

0461

—

—

2

×

FUEL LEVL SEN/CIRC

P0462

0462

—

—

2

×

FUEL LEVL SEN/CIRC

P0463

0463

—

—

2

×

VEH SPEED SEN/CIRC*

5

P0500

0500

—

—

2

×

ISC SYSTEM

P0506

0506

—

—

2

×

ISC SYSTEM

P0507

0507

—

—

2

×

PW ST P SEN/CIRC

P0550

0550

—

—

2

—

ECM BACK UP/CIRCUIT

P0603

0603

—

—

2

×

ECM

P0605

0605

—

—

1 or 2

×

or —

SENSOR POWER/CIRC

P0643

0643

—

—

1

×

TCM

P0700

0700

—

—

1

×

PNP SW/CIRC

P0705

0705

—

—

2

×

ATF TEMP SEN/CIRC

P0710

0710

—

—

2

×

TURBINE SENSOR

P0717

0717

—

—

2

×

VEH SPD SEN/CIR AT*

5

P0720

0720

—

—

2

×

TCC SOLENOID/CIRC

P0740

0740

—

—

2

×

A/T TCC S/V FNCTN

P0744

0744

—

—

2

×

L/PRESS SOL/CIRC

P0745

0745

—

—

2

×

P-N POS SW/CIRCUIT

P0850

0850

—

—

2

×

INTK TIM S/CIRC-B1

P1140

1140

—

—

2

×

INTK TIM S/CIRC-B2

P1145

1145

—

—

2

×

CLOSED LOOP-B1

P1148

1148

—

—

1

×

CLOSED LOOP-B2

P1168

1168

—

—

1

×

TCS C/U FUNCTN

P1211

1211

—

—

2

—

TCS/CIRC

P1212

1212

—

—

2

—

ENG OVER TEMP

P1217

1217

—

—

1

×

FPCM/CIRCUIT

P1220

1220

—

—

2

×

CTP LEARNING

P1225

1225

—

—

2

—

CTP LEARNING

P1226

1226

—

—

2

—

EVAP SMALL LEAK

P1442

1442

×

×

2

×

EVAP VERY SML LEAK

P1456

1456

×

*

7

×

2

×

VC/V BYPASS/V

P1490

1490

—

—

2

×

VC CUT/V BYPASS/V

P1491

1491

—

—

2

×

Items

(CONSULT-II screen terms)

DTC*

1

SRT code

Test value/

Test limit

(GST only)

Trip

MIL

Reference

page

CONSULT-II

GST*

2

ECM*

3

Content .. 350 351 352 353 ..