Infiniti FX35 / FX45. Manual - part 341

 

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Infiniti FX35 / FX45. Manual - part 341

 

 

TROUBLE DIAGNOSIS

EC-125

< SERVICE INFORMATION >

[VQ35DE]

C

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*: Leaving cooling fan OFF with CONSULT-III while engine is running may cause the engine to overheat.

DTC & SRT CONFIRMATION MODE

SRT STATUS Mode

For details, refer to 

EC-55, "Emission-Related Diagnostic Information"

.

SRT WORK SUPPORT Mode

This mode enables a technician to drive a vehicle to set the SRT while monitoring the SRT status.

DTC WORK SUPPORT Mode

*: DTC P1442 and P1456 does not apply to S50 models but appears in DTC Work Support Mode screens.

Generic Scan Tool (GST) Function

INFOID:0000000001325937

DESCRIPTION

FUEL PUMP RE-
LAY

• Ignition switch: ON

(Engine stopped)

• Turn the fuel pump relay “ON” 

and “OFF” using CONSULT-III 
and listen to operating sound.

Fuel pump relay makes the operat-
ing sound.

• Harness and connectors
• Fuel pump relay

PURG VOL 
CONT/V

• Engine: After warming up, run en-

gine at 1,500 rpm.

• Change the EVAP canister purge 

volume control solenoid valve 
opening percent using CON-
SULT-III.

Engine speed changes according to 
the opening percent.

• Harness and connectors
• Solenoid valve

FUEL/T TEMP 
SEN

• Change the fuel tank temperature using CONSULT-III.

VENT CON-
TROL/V

• Ignition switch: ON

(Engine stopped)

• Turn solenoid valve “ON” and 

“OFF” with the CONSULT-III and 
listen to operating sound.

Solenoid valve makes an operating 
sound.

• Harness and connectors
• Solenoid valve

V/T ASSIGN AN-
GLE

• Engine: Return to the original 

trouble condition

• Change intake valve timing using 

CONSULT-III.

If trouble symptom disappears, see 
CHECK ITEM.

• Harness and connectors
• Intake valve timing control sole-

noid valve

TEST ITEM

CONDITION

JUDGEMENT

CHECK ITEM (REMEDY)

Test mode

Test item

Corresponding DTC No.

Reference page

EVAPORATIVE SYS-
TEM

PURG FLOW P0441

P0441

EC-336

EVP SML LEAK P0442/P1442*

P0442

EC-341

EVP V/S LEAK P0456/P1456*

P0456

EC-394

PURG VOL CN/V P1444

P0443

EC-348

A/F SEN1

A/F SEN1 (B1) P1276

P0130

EC-212

A/F SEN1 (B1) P1278/1279

P0133

EC-236

A/F SEN1 (B2) P1286

P0150

EC-212

A/F SEN1 (B2) P1288/1289

P0153

EC-236

HO2S2

HO2S2 (B1) P0139

P0139

EC-265

HO2S2 (B1) P1146

P0138

EC-254

HO2S2 (B1) P1147

P0137

EC-245

HO2S2 (B2) P0159

P0159

EC-265

HO2S2 (B2) P1166

P0158

EC-254

HO2S2 (B2) P1167

P0157

EC-245

EC-126

< SERVICE INFORMATION >

[VQ35DE]

TROUBLE DIAGNOSIS

Generic Scan Tool (OBDII scan tool) complying with SAE J1978 has
8 different functions explained below.
ISO15765-4 is used as the protocol.
The name GST or Generic Scan Tool is used in this service manual.

FUNCTION

INSPECTION PROCEDURE

1.

Turn ignition switch OFF.

SEF139P

Diagnostic test mode

Function

Service $01

READINESS TESTS

This diagnostic service gains access to current emission-related data values, including an-
alog inputs and outputs, digital inputs and outputs, and system status information.

Service $02

(FREEZE DATA)

This diagnostic service gains access to emission-related data value which were stored by 
ECM during the freeze frame. For details, refer to 

EC-55, "Emission-Related Diagnostic 

Information"

 .

Service $03

DTCs

This diagnostic service gains access to emission-related power train trouble codes which 
were stored by ECM.

Service $04

CLEAR DIAG INFO

This diagnostic service can clear all emission-related diagnostic information. This in-
cludes:
• Clear number of diagnostic trouble codes (Service $01)
• Clear diagnostic trouble codes (Service $03)
• Clear trouble code for freeze frame data (Service $01)
• Clear freeze frame data (Service $02)
• Reset status of system monitoring test (Service $01)
• Clear on board monitoring test results (Service $06 and $07)

Service $06

(ON BOARD TESTS)

This diagnostic service accesses the results of on board diagnostic monitoring tests of 
specific components/systems that are not continuously monitored.

Service $07

(ON BOARD TESTS)

This diagnostic service enables the off board test drive to obtain test results for emission-
related powertrain components/systems that are continuously monitored during normal 
driving conditions.

Service $08

This diagnostic service can close EVAP system in ignition switch ON position (Engine 
stopped). When this diagnostic service is performed, the EVAP canister vent control valve 
can be closed.
In the following conditions, this diagnostic service cannot function.
• Low ambient temperature
• Low battery voltage
• Engine running
• Ignition switch OFF
• Low fuel temperature
• Too much pressure is applied to EVAP system

Service $09

(CALIBRATION ID)

This diagnostic service enables the off-board test device to request specific vehicle infor-
mation such as Vehicle Identification Number (VIN) and Calibration IDs.

TROUBLE DIAGNOSIS

EC-127

< SERVICE INFORMATION >

[VQ35DE]

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2.

Connect GST to data link connector, which is located under LH
dash panel near the hood opener handle.

3.

Turn ignition switch ON.

4.

Enter the program according to instruction on the screen or in
the operation manual.
(*: Regarding GST screens in this section, sample screens are
shown.)

5.

Perform each diagnostic mode according to each service proce-
dure.
For further information, see the GST Operation Manual of
the tool maker.

CONSULT-III Reference Value in Data Monitor Mode

INFOID:0000000001325938

Remarks:

 Specification data are reference values.

 Specification data are output/input values which are detected or supplied by the ECM at the connector.

* Specification data may not be directly related to their components signals/values/operations.
i.e. Adjust ignition timing with a timing light before monitoring IGN TIMING, because the monitor may show the specification data in spite of the

ignition timing not being adjusted to the specification data. This IGN TIMING monitors the data calculated by the ECM according to the signals
input from the camshaft position sensor and other ignition timing related sensors.

PBIB1570E

SEF398S

SEF416S

MONITOR ITEM

CONDITION

SPECIFICATION

ENG SPEED

• Run engine and compare CONSULT-III value with the tachometer indica-

tion.

Almost the same speed as the 
tachometer indication.

MAS A/F SE-B1

See 

EC-131

.

B/FUEL SCHDL

See 

EC-131

.

A/F ALPHA-B1
A/F ALPHA-B2

See 

EC-131

.

COOLAN TEMP/S

• Engine: After warming up

More than 70

°

C (158

°

F)

A/F SEN1 (B1)
A/F SEN1 (B2)

• Engine: After warming up

Maintaining engine speed at 2,000 rpm

Fluctuates around 1.5 V

EC-128

< SERVICE INFORMATION >

[VQ35DE]

TROUBLE DIAGNOSIS

HO2S2 (B1)
HO2S2 (B2)

• Revving engine from idle to 3,000 rpm quickly after the following conditions 

are met

- Engine: After warming up
- Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and 

at idle for 1 minute under no load

0 - 0.3V 

←→

 Approx. 0.6 - 1.0V

HO2S2 MNTR(B1)
HO2S2 MNTR(B2)

LEAN 

←→

 RICH

VHCL SPEED SE

• Turn drive wheels and compare CONSULT-III value with the speedometer 

indication.

Almost the same speed as the 
speedometer indication

BATTERY VOLT

• Ignition switch: ON (Engine stopped)

11 - 14V

ACCEL SEN 1

• Ignition switch: ON

(Engine stopped)

Accelerator pedal: Fully released

0.5 - 1.0V

Accelerator pedal: Fully depressed

4.0 - 4.8V

ACCEL SEN 2*

• Ignition switch: ON

(Engine stopped)

Accelerator pedal: Fully released

0.3 - 1.2V

Accelerator pedal: Fully depressed

3.9 - 4.8V

TP SEN 1-B1
TP SEN 2-B1*

• Ignition switch: ON

(Engine stopped)

• Selector lever: D

Accelerator pedal: Fully released

More than 0.36V

Accelerator pedal: Fully depressed

Less than 4.75V

EVAP SYS PRES

• Ignition switch: ON

Approx. 1.8 - 4.8V

START SIGNAL

• Ignition switch: ON 

 START 

 ON

OFF 

 ON 

 OFF

CLSD THL POS

• Ignition switch: ON

(Engine stopped)

Accelerator pedal: Fully released

ON

Accelerator pedal: Slightly depressed

OFF

AIR COND SIG

• Engine: After warming up, idle the 

engine

Air conditioner switch: OFF

OFF

Air conditioner switch: ON
(Compressor operates.)

ON

P/N POSI SW

• Ignition switch: ON

Selector lever: P or N

ON

Selector lever: Except above

OFF

PW/ST SIGNAL

• Engine: After warming up, idle the 

engine

Steering wheel: Not being turned

OFF

Steering wheel: Being turned

ON

LOAD SIGNAL

• Ignition switch: ON

Rear window defogger switch is ON 
and/or lighting switch is in 2nd

ON

Rear window defogger switch is OFF 
and lighting switch is OFF

OFF

IGNITION SW

• Ignition switch: ON 

 OFF 

 ON

ON 

 OFF 

 ON

HEATER FAN SW

• Engine: After warming up, idle the 

engine

Heater fan: Operating.

ON

Heater fan: Not operating

OFF

BRAKE SW

• Ignition switch: ON

Brake pedal: Fully released

OFF

Brake pedal: Slightly depressed

ON

INJ PULSE-B1
INJ PULSE-B2

• Engine: After warming up
• Selector lever: P or N
• Air conditioner switch: OFF
• No  load

Idle

2.0 - 3.0 msec

2,000 rpm

1.9 - 2.9 msec

IGN TIMING

• Engine: After warming up
• Selector lever: P or N
• Air conditioner switch: OFF
• No  load

Idle

13

°

 - 18

°

 BTDC

2,000 rpm

25

°

 - 45

°

 BTDC

CAL/LD VALUE

• Engine: After warming up
• Selector lever: P or N
• Air conditioner switch: OFF
• No  load

Idle

5% - 35%

2,500 rpm

5% - 35%

MASS AIRFLOW

• Engine: After warming up
• Selector lever: P or N
• Air conditioner switch: OFF
• No  load

Idle

2.0 - 6.0 g·m/s

2,500 rpm

7.0 - 20.0 g·m/s

MONITOR ITEM

CONDITION

SPECIFICATION

 

 

 

 

 

 

 

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