Infiniti QX56 (JA60). Manual - part 445

 

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Infiniti QX56 (JA60). Manual - part 445

 

 

EC-432

< ECU DIAGNOSIS >

[VK56DE]

ECM

65
79
80
81

G/R
V/W
W/R
W/G

Ignition signal No. 8
Ignition signal No. 6
Ignition signal No. 4
Ignition signal No. 2

[Engine is running]
• Warm-up condition
• Idle speed
NOTE:
The pulse cycle changes depending on rpm at 
idle

0 - 0.3V

[Engine is running]
• Warm-up condition
• Engine speed: 2,500 rpm

0.1 - 0.6V

82

B/R

Sensor ground
(APP sensor 1)

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

Approximately 0V

83

G/W

Sensor ground
(APP sensor 2)

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

Approximately 0V

86

P

CAN communication line

90

L

Sensor power supply
(APP sensor 1)

[Ignition switch: ON]

Approximately 5V

91

W/R

Sensor power supply
(APP sensor 2)

[Ignition switch: ON]

Approximately 5V

94

L

CAN communication line

98

G/R

Accelerator pedal position 
sensor 2

[Ignition switch: ON]
• Engine: Stopped
• Accelerator pedal: Fully released

0.25 - 0.50V

[Ignition switch: ON]
• Engine: Stopped
• Accelerator pedal: Fully depressed

2.0 - 2.5V

99

G/R

ASCD steering switch
(Models with ICC system)

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

Approximately 4.3V

[Ignition switch: ON]
• MAIN switch: Pressed

Approximately 0V

[Ignition switch: ON]
• CANCEL switch: Pressed

Approximately 1.3V

[Ignition switch: ON]
• RESUME/ACCELERATE switch: Pressed

Approximately 3.7V

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

Approximately 3V

[Ignition switch: ON]
• DISTANCE switch: Pressed

Approximately 2.2V

TER-

MI-

NAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

SEC986C

SEC987C

ECM

EC-433

< ECU DIAGNOSIS >

[VK56DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

99

G/R

ASCD steering switch
(Models with ASCD system)

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

Approximately 4V

[Ignition switch: ON]
• MAIN switch: Pressed

Approximately 0V

[Ignition switch: ON]
• CANCEL switch: Pressed

Approximately 1V

[Ignition switch: ON]
• RESUME/ACCELERATE switch: Pressed

Approximately 3V

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

Approximately 2V

101

R/W

Stop lamp switch

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

Approximately 0V

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

BATTERY VOLTAGE
(11 - 14V)

102

GR/R

PNP signal

[Ignition switch: ON]
• Selector lever: P or N

Approximately 0V

[Ignition switch: ON]
• Except the above gear position

BATTERY VOLTAGE
(11 - 14V)

104

O

Throttle control motor relay

[Ignition switch: OFF]

BATTERY VOLTAGE
(11 - 14V)

[Ignition switch: ON]

0 - 1.0V

106

BR/W

Accelerator pedal position 
sensor 1

[Ignition switch: ON]
• Engine: Stopped
• Accelerator pedal: Fully released

0.5 - 1.0V

[Ignition switch: ON]
• Engine: Stopped
• Accelerator pedal: Fully depressed

4.2 - 4.8V

107

V/R

Fuel tank temperature sensor

[Engine is running]

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

108

BR/W

ICC brake switch
(Models with ICC system)
ASCD brake switch
(Models with ASCD system)

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

Approximately 0V

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

BATTERY VOLTAGE
(11 - 14V)

109

L/W

Ignition switch

[Ignition switch: OFF]

0V

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14V)

111

W/B

ECM relay
(Self shut-off)

[Engine is running]
[Ignition switch: OFF]
• For a few seconds after turning ignition 

switch OFF

0 - 1.5V

[Ignition switch: OFF]
• More than a few seconds after turning igni-

tion switch OFF

BATTERY VOLTAGE
(11 - 14V)

113

GR

Fuel pump relay

[Ignition switch: ON]
• For 1 second after turning ignition switch 

ON

[Engine is running]

0 - 1.5V

[Ignition switch: ON]
• More than 1 second after turning ignition 

switch ON

BATTERY VOLTAGE
(11 - 14V)

TER-

MI-

NAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

EC-434

< ECU DIAGNOSIS >

[VK56DE]

ECM

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

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

PG-74

.

115
116

B
B/W

ECM ground

[Engine is running]
• Idle speed

Body ground

117

L/Y

EVAP canister vent control 
valve

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14V)

119

120

BR
BR

Power supply for ECM

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14V)

121

W

Power supply for ECM
(Back-up)

[Ignition switch: OFF]

BATTERY VOLTAGE
(11 - 14V)

TER-

MI-

NAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

ECM

EC-435

< ECU DIAGNOSIS >

[VK56DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

Wiring Diagram - ENGINE CONTROL SYSTEM -

INFOID:0000000005149495

ABBWA0126GB

 

 

 

 

 

 

 

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