Infiniti G35 (V35) Sedan. Manual - part 488

EC-98

< FUNCTION DIAGNOSIS >

[VQ35HR]

INTAKE VALVE TIMING CONTROL

 : Vehicle front

1.

Engine coolant temperature sensor

2.

A/F sensor 1 (bank 1)

3.

Crankshaft position sensor (POS)

1.

IPDM E/R

2.

Battery current sensor

3.

Refrigerant pressure sensor

 : Vehicle front

1.

Power steering pressure sensor

2.

Alternator

3.

Engine oil temperature sensor

 : Vehicle front

JMBIA0011ZZ

JMBIA0013ZZ

JMBIA0014ZZ

JMBIA0012ZZ

INTAKE VALVE TIMING CONTROL

EC-99

< FUNCTION DIAGNOSIS >

[VQ35HR]

C

D

E

F

G

H

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J

K

L

M

A

EC

N

P

O

1.

EVAP service port

2.

EVAP canister purge volume control 
solenoid valve

3.

EVAP canister

4.

EVAP canister vent control valve

5.

EVAP control system pressure sen-
sor

 : Vehicle front

1.

Fuel level sensor unit and fuel pump 
harness connector

2.

Fuel level sensor unit and fuel pump 3.

Fuel pressure regulator

4.

Fuel tank temperature sensor

1.

Accelerator pedal position sensor

2.

ECM

1.

ICC steering switch

2.

CANCEL switch

3.

RESUME/ACCELERATE switch

4.

SET/COAST switch

5.

DISTANCE switch

6.

MAIN switch

JMBIA0019ZZ

JMBIA0015ZZ

JMBIA0016ZZ

EC-100

< FUNCTION DIAGNOSIS >

[VQ35HR]

INTAKE VALVE TIMING CONTROL

Component Description

INFOID:0000000000956514

1.

ASCD steering switch

2.

CANCEL switch

3.

RESUME/ACCELERATE switch

4.

SET/COAST switch

5.

MAIN switch

1.

Stop lamp switch

2.

ASCD brake switch (ASCD models)
ICC brake switch (ICC models)

3.

Brake pedal

4.

ASCD clutch switch (ASCD models)
ICC clutch switch (ICC models)

5.

Clutch pedal

JMBIA0017ZZ

JMBIA0051ZZ

Component

Reference

Camshaft position sensor (PHASE)

EC-258, "Description"

Crankshaft position sensor (POS)

EC-254, "Description"

Engine coolant temperature sensor

EC-174, "Description"

Intake valve timing control solenoid valve

EC-153, "Description"

Vehicle speed sensor

EC-328, "Description"

ON BOARD DIAGNOSTIC (OBD) SYSTEM

EC-101

< FUNCTION DIAGNOSIS >

[VQ35HR]

C

D

E

F

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EC

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P

O

ON BOARD DIAGNOSTIC (OBD) SYSTEM

Diagnosis Description

INFOID:0000000000956515

INTRODUCTION

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 

EC-518,

"Fail Safe"

.)

TWO TRIP DETECTION LOGIC

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

DTC AND FREEZE FRAME DATA

DTC and 1st Trip DTC

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-III

×

×

×

×

×

×

—

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 catalyst 
damage) — DTC: P0300 - P0306 is 
being detected

×

—

—

—

—

—

×

—

Misfire (Possible three way catalyst 
damage) — DTC: P0300 - P0306 is 
being detected

—

—

×

—

—

×

—

—

One trip detection diagnoses (Re-
fer to 

EC-521, "DTC Index"

.)

—

×

—

—

×

—

—

—

Except above

—

—

—

×

—

×

×

—