Infiniti M35/M45 Y50. Manual - part 416

TROUBLE DIAGNOSIS

EC-137

[VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

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.

SEF398S

SEF416S

EC-138

[VQ35DE]

TROUBLE DIAGNOSIS

CONSULT-II Reference Value in Data Monitor

NBS004T9

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.

MONITOR ITEM

CONDITION

SPECIFICATION

ENG SPEED

●

Run engine and compare CONSULT-II value with the tachometer indication.

Almost the same speed as 
the tachometer indication.

MAS A/F SE-B1

See 

EC-143, "TROUBLE DIAGNOSIS - SPECIFICATION VALUE"

 .

B/FUEL SCHDL

See 

EC-143, "TROUBLE DIAGNOSIS - SPECIFICATION VALUE"

 .

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

See 

EC-143, "TROUBLE DIAGNOSIS - SPECIFICATION VALUE"

 .

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

HO2S2 (B1)
HO2S2 (B2)

●

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

–

Engine: After warming up

–

Keeping 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-II value with the speedometer 
indication.

Almost the same speed as 
speedometer indication

BATTERY VOLT

●

Ignition switch: ON (Engine stopped)

11 - 14V

ACCEL SEN 1

ACCEL SEN 2*

1

●

Ignition switch: ON
(Engine stopped)

Accelerator pedal: Fully released

0.4 - 1.1V

Accelerator pedal: Fully depressed

3.7 - 4.8V

THRTL SEN 1

THRTL SEN 2*

1

●

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: ON
and/or
Lighting switch: 2nd position

ON

Rear window defogger switch and light-
ing switch: OFF

OFF

IGNITION SW

●

Ignition switch: ON 

→

 OFF 

→

 ON

ON 

→

 OFF 

→

 ON

HEATER FAN SW

●

Engine: After warming up, idle 
the engine

Heater fan switch: ON

ON

Heater fan switch: OFF

OFF

BRAKE SW

●

Ignition switch: ON

Brake pedal: Fully released

OFF

Brake pedal: Slightly depressed

ON

TROUBLE DIAGNOSIS

EC-139

[VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

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

PURG VOL C/V

●

Engine: After warming up

●

Selector lever: P or N

●

Air conditioner switch: OFF

●

No load

Idle
(Accelerator pedal: Not depressed even 
slightly, after engine starting.)

0%

2,000 rpm

—

INT/V TIM (B1)
INT/V TIM (B2)

●

Engine: After warming up

●

Selector lever: P or N

●

Air conditioner switch: OFF

●

No load

Idle

−

5

°

 - 5

°

CA

When revving engine up to 2,000 rpm 
quickly

Approx. 0

°

 - 30

°

CA

INT/V SOL (B1)
INT/V SOL (B2)

●

Engine: After warming up

●

Selector lever: P or N

●

Air conditioner switch: OFF

●

No load

Idle

0% - 2%

When revving engine up to 2,000 rpm 
quickly

Approx. 0% - 50%

AIR COND RLY

●

Engine: After warming up, idle 
the engine

Air conditioner switch: OFF

OFF

Air conditioner switch: ON
(Compressor operates)

ON

FUEL PUMP RLY

●

For 1 seconds after turning ignition switch: ON

●

Engine running or cranking

ON

●

Except above

OFF

FPCM

●

Engine: Cranking

HI

●

Engine: Idle

●

Engine coolant temperature: More than 10

°

C (50

°

F)

LOW

VENT CONT/V

●

Ignition switch: ON

OFF

THRTL RELAY

●

Ignition switch: ON

ON

HO2S2 HTR (B1)
HO2S2 HTR (B2)

●

Engine speed: Below 3,600 rpm 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

ON

●

Engine speed: Above 3,600 rpm

OFF

I/P PULLY SPD

●

Vehicle speed: More than 20 km/h (12 MPH)

Almost the same speed as 
the tachometer indication

VEHICLE SPEED

●

Turn drive wheels and compare CONSULT-II value with the speedometer 
indication.

Almost the same speed as 
the speedometer indication

MONITOR ITEM

CONDITION

SPECIFICATION

EC-140

[VQ35DE]

TROUBLE DIAGNOSIS

*1: Accelerator pedal position sensor 2 signal and throttle position sensor 2 signal are converted by ECM internally. Thus, they differ
from ECM terminals voltage signal.
*2: Before measuring the terminal voltage, confirm that the battery is fully charged. Refer to 

SC-5, "SPECIFIC GRAVITY CHECK"

 .

TRVL AFTER MIL

●

Ignition switch: ON

Vehicle has traveled after MIL has turned 
ON.

0 - 65,535 km
(0 - 40,723 miles)

A/F S1 HTR (B1)
A/F S1 HTR (B2)

●

Engine: After warming up, idle the engine

0 - 100%

AC PRESS SEN

●

Engine: Idle

●

Both A/C switch and blower fan switch: ON (Compressor operates)

1.0 - 4.0V

VHCL SPEED SE

●

Turn drive wheels and compare CONSULT-II value with the speedometer 
indication.

Almost the same speed as 
the speedometer indication

SET VHCL SPD

●

Engine: Running

ASCD: Operating

The preset vehicle speed is 
displayed

MAIN SW

●

Ignition switch: ON

MAIN switch: Pressed

ON

MAIN switch: Released

OFF

CANCEL SW

●

Ignition switch: ON

CANCEL switch: Pressed

ON

CANCEL switch: Released

OFF

RESUME/ACC SW

●

Ignition switch: ON

RESUME/ACCELERATE switch: 
Pressed

ON

RESUME/ACCELERATE switch: 
Released

OFF

SET SW

●

Ignition switch: ON

SET/COAST switch: Pressed

ON

SET/COAST switch: Released

OFF

BRAKE SW1
(ICC/ASCD brake 
switch)

●

Ignition switch: ON

Brake pedal: Fully released

ON

Brake pedal: Slightly depressed

OFF

BRAKE SW2
(Stop lamp switch)

●

Ignition switch: ON

Brake pedal: Fully released

OFF

Brake pedal: Slightly depressed

ON

DIST SW

●

Ignition switch: ON

DISTANCE switch: Pressed

ON

DISTANCE switch: Released

OFF

CRUISE LAMP

●

Ignition switch: ON

MAIN switch: Pressed at the 1st time 

→

 

at the 2nd time

ON 

→

 OFF

SET LAMP

●

MAIN switch: ON

●

When vehicle speed: Between 40 
km/h (25 MPH) and 144 km/h (89 
MPH)

ASCD: Operating

ON

ASCD: Not operating

OFF

FAN DUTY

●

Engine: Running

0 - 100%

AC EVA TEMP

●

Engine: Idle

●

Both A/C switch and blower fan switch: ON (Compressor operates)

AC EVA TARGET

●

Engine: Idle

●

Both A/C switch and blower fan switch: ON (Compressor operates)

ALT DUTY

●

Engine: Idle

0 - 80%

BAT CUR SEN

●

Engine speed: Idle

●

Battery: Fully charged*

2

●

Selector lever: P or N

●

Air conditioner switch: OFF

●

No load

Approx. 2,600 - 3,500mV

ALT DUTY SIG

●

Power generation voltage variable control: Operating

ON

●

Power generation voltage variable control: Not operating

OFF

MONITOR ITEM

CONDITION

SPECIFICATION