Infiniti G35 (V35) Sedan. Manual - part 588

EC-498

< ECU DIAGNOSIS >

[VQ35HR]

ECM

88

Ground

LG

Sensor ground
[Exhaust valve timing 
control position sensor 
(bank 1), Exhaust valve 
timing control position 
sensor (bank 2)]

—

[Engine is running]
• Warm-up condition
• Idle speed

0V

91

Ground

SB

Battery current sensor

Input

[Engine is running]

• Battery: Fully charged*

2

• Idle speed

2.6 - 3.5V

92

Ground

P

Sensor ground
[Camshaft position sen-
sor (PHASE) (bank 2)]

—

[Engine is running]
• Warm-up condition
• Idle speed

0V

93

Ground

P

Power supply for ECM 
(Back-up)

Input

[Ignition switch: OFF]

BATTERY VOLTAGE
(11 - 14V)

94

Ground

LG

Sensor ground
[Mass air flow sensor 
(bank 2)]

—

[Engine is running]
• Warm-up condition
• Idle speed

0V

95

Ground

G

Sensor ground
(Battery current sensor)

—

[Engine is running]
• Warm-up condition
• Idle speed

0V

96

Ground

B

Sensor ground
[Camshaft position sen-
sor (PHASE) (bank 1), 
Power steering pressure 
sensor]

—

[Engine is running]
• Warm-up condition
• Idle speed

0V

97

Ground

R

Accelerator pedal posi-
tion sensor 1

Input

[Ignition switch: ON]
• Engine stopped
• Accelerator pedal: Fully re-

leased

0.5 - 1.0V

[Ignition switch: ON]
• Engine stopped
• Accelerator pedal: Fully de-

pressed

4.2 - 4.8V

98

Ground

P

Accelerator pedal posi-
tion sensor 2

Input

[Ignition switch: ON]
• Engine stopped
• Accelerator pedal: Fully re-

leased

0.25 - 0.50V

[Ignition switch: ON]
• Engine stopped
• Accelerator pedal: Fully de-

pressed

2.0 - 2.5V

99

Ground

L

Sensor power supply
(Accelerator pedal posi-
tion sensor 1)

—

[Ignition switch: ON]

5V

100

Ground

W

Sensor ground
(Accelerator pedal posi-
tion sensor 1)

—

[Engine is running]
• Warm-up condition
• Idle speed

0V

Terminal No.

Wire 

color

Description

Condition

Value

(Approx.)

+

-–

Signal name

Input/

Output

ECM

EC-499

< ECU DIAGNOSIS >

[VQ35HR]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

101

Ground

SB

ICC steering switch
(models with ICC sys-
tem)

Input

[Ignition switch: ON]
• ICC steering switch: OFF

4.3V

[Ignition switch: ON]
• MAIN switch: Pressed

0V

[Ignition switch: ON]
• CANCEL switch: Pressed

1.3V

[Ignition switch: ON]
• RESUME/ACCELERATE 

switch: Pressed

3.7V

[Ignition switch: ON]
• SET/COAST switch: Pressed

3V

[Ignition switch: ON]
• DISTANCE switch: Pressed

2.2V

101

Ground

SB

ASCD steering switch
(models with ASCD sys-
tem)

Input

[Ignition switch: ON]
• ASCD steering switch: OFF

4V

[Ignition switch: ON]
• MAIN switch: Pressed

0V

[Ignition switch: ON]
• CANCEL switch: Pressed

1V

[Ignition switch: ON]
• RESUME/ACCELERATE 

switch: Pressed

3V

[Ignition switch: ON]
• SET/COAST switch: Pressed

2V

102

Ground

LG

EVAP control system 
pressure sensor

Input

[Ignition switch: ON]

1.8 - 4.8V

103

Ground

G

Sensor power supply
(Accelerator pedal posi-
tion sensor 2)

—

[Ignition switch: ON]

5V

104

Ground

GR

Sensor ground
(Accelerator pedal posi-
tion sensor 2)

—

[Ignition switch: ON]
• Warm-up condition
• Idle speed

0V

105

Ground

L

Refrigerant pressure 
sensor

Input

[Engine is running]
• Warm-up condition
• Both A/C switch and blower fan 

motor switch: ON (Compressor 
operates)

1.0 - 4.0V

106

Ground

W

Fuel tank temperature 
sensor

Input

[Engine is running]

0 - 4.8V
Output voltage varies with fuel 
tank temperature.

107

Ground

BR

Sensor power supply
(EVAP control system 
pressure sensor)

—

[Ignition switch: ON]

5V

108

Ground

Y

Sensor ground
(ASCD/ICC steering 
switch)

—

[Engine is running]
• Warm-up condition
• Idle speed

0V

109

Ground

G (A/

T)

BR 

(M/T)

PNP switch

Input

[Ignition switch: ON]
• Selector lever: P or N (A/T), Neu-

tral (M/T)

BATTERY VOLTAGE
(11 - 14V)

[Ignition switch: ON]
• Selector lever: Except above

0V

Terminal No.

Wire 

color

Description

Condition

Value

(Approx.)

+

-–

Signal name

Input/

Output

EC-500

< ECU DIAGNOSIS >

[VQ35HR]

ECM

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)

*1: This may vary depending on internal resistance of the tester.

**2: Before measuring the terminal voltage, confirm that the battery is fully charged. Refer to 

PG-2, "How to Handle Battery"

.

110

Ground

R

Engine speed output sig-
nal

Output

[Engine is running]
• Warm-up condition
• Idle speed

NOTE:
The pulse cycle changes de-
pending on rpm at idle

1V

[Engine is running]
• Engine speed is 2,000 rpm

1V

111

Ground

O

Sensor power supply
(Refrigerant pressure 
sensor)

—

[Ignition switch: ON]

5V

112

Ground

V

Sensor ground
(EVAP control system 
pressure sensor)

—

[Engine is running]
• Warm-up condition
• Idle speed

0V

113

Ground

P

CAN communication line

Input/

Output

—

—

114

Ground

L

CAN communication line

Input/

Output

—

—

116

Ground

W

Sensor ground
(Refrigerant pressure 
sensor)

—

[Engine is running]
• Warm-up condition
• Idle speed

0V

117

Ground

V

Data link connector

Input/

Output

[Ignition switch: ON]
• GST: Disconnected

5V - BATTERY VOLTAGE (11 - 
14V)

121

Ground

LG

EVAP canister vent con-
trol valve

Output

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14V)

122

Ground

P

Stop lamp switch

Input

[Ignition switch: OFF]
• Brake pedal: Fully released

0V

[Ignition switch: OFF]
• Brake pedal: Slightly depressed

BATTERY VOLTAGE
(11 - 14V)

123
124

Ground

B
B

ECM ground

—

[Engine is running]
• Idle speed

Body ground

125

Ground

R

Power supply for ECM

Input

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14V)

126

Ground

BR

ICC brake switch (mod-
els with ICC system)
ASCD brake switch 
(models with ASCD sys-
tem)

Input

[Ignition switch: ON]
• Brake pedal: Slightly depressed

0V

[Ignition switch: ON]
• Brake pedal: Fully released

BATTERY VOLTAGE
(11 - 14V)

127
128

Ground

B
B

ECM ground

—

[Engine is running]
• Idle speed

Body ground

Terminal No.

Wire 

color

Description

Condition

Value

(Approx.)

+

-–

Signal name

Input/

Output

JMBIA0076GB

JMBIA0077GB

ECM

EC-501

< ECU DIAGNOSIS >

[VQ35HR]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

Wiring Diagram — ENGINE CONTROL SYSTEM —

INFOID:0000000000956899

JCBWA0001GB