Infiniti QX56 (Z62). Manual - part 527

 

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Infiniti QX56 (Z62). Manual - part 527

 

 

EC-86

< ECU DIAGNOSIS INFORMATION >

[VK56VD]

ECM

78

(L/R)

175

(B)

A/F sensor 1 (bank 2)

Input

[Engine is running]
• Warm-up condition
• Engine speed: 2,000 rpm

2.2 - 2.8V
Output voltage varies with air fuel 
ratio.

79

(B)

97

(W)

Throttle position sensor 2

Input

[Ignition switch: ON]
• Engine: Stopped
• Selector lever: D position
• Accelerator pedal: Fully released

Less than 4.75 V

[Ignition switch: ON]
• Engine: Stopped
• Selector lever: D position
• Accelerator pedal: Fully depressed

More than 0.36 V

80

(L/W)

175

(B)

A/F sensor 1 (bank 2)

Input

[Ignition switch: ON]

3.0 V

81

(G)

97

(W)

Sensor power supply
[Throttle position sensor (bank 
1)]

[Ignition switch: ON]

5 V

83

(LG/

R)

99

(LG/

B)

Sensor power supply
[Camshaft position sensor (bank 
2)]

[Ignition switch: ON]

5 V

85

(GR/

R)

70

(W/L)

Sensor power supply
(Manifold absolute pressure 
sensor)

[Ignition switch: ON]

5 V

86

(R/
W)

98

(G/

W)

Crankshaft position sensor

Input

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

NOTE:
The pulse cycle changes depending 
on rpm at idle

4.0 - 5.0 V

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

4.0 - 5.0 V

87

(L/W)

100

(R)

Heated oxygen sensor 2 (bank 
2)

Input

[Engine is running]
• Revving engine from idle to 3,000 

rpm quickly after the following condi-
tions 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 - 1.0 V

88

(B)

175

(B)

A/F sensor 1 (bank 1)

Input

[Engine is running]
• Warm-up condition
• Engine speed: 2,000 rpm

2.2 - 2.8 V
Output voltage varies with air fuel 
ratio.

90

(W)

175

(B)

A/F sensor 1 (bank 1)

Input

[Ignition switch: ON]

3.0 V

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

+

Signal name

Input/

Output

JMBIA0041GB

JMBIA0042GB

ECM

EC-87

< ECU DIAGNOSIS INFORMATION >

[VK56VD]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

91

(R)

97

(W)

Throttle position sensor 1

Input

[Ignition switch: ON]
• Engine: Stopped
• Selector lever: D position
• Accelerator pedal: Fully released

More than 0.36 V

[Ignition switch: ON]
• Engine: Stopped
• Selector lever: D position
• Accelerator pedal: Fully depressed

Less than 4.75 V

94

(R)

175

(B)

A/F sensor 1 (bank 1)

Input

[Ignition switch: ON]

2.0 V

95

(L/R)

68

(BR/

W)

Camshaft position sensor (bank 
1)

Input

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

NOTE:
The pulse cycle changes depending 
on rpm at idle

3.0 - 5.0 V

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

3.0 - 5.0 V

96

(W/

R)

100

(R)

Heated oxygen sensor 2 (bank 
1)

Input

[Engine is running]
• Revving engine from idle to 3,000 

rpm quickly after the following condi-
tions 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 - 1.0 V

97

(W)

Sensor ground
[Throttle position sensor (bank 
1)]

98

(G/

W)

Sensor ground
(Crankshaft position sensor)

99

(LG/

B)

Sensor ground
[Camshaft position sensor (bank 
2)]

100

(R)

Sensor ground
(Heated oxygen sensor 2)

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

+

Signal name

Input/

Output

JMBIA0045GB

JMBIA0046GB

EC-88

< ECU DIAGNOSIS INFORMATION >

[VK56VD]

ECM

101

(R)

102

(R)

175

(B)

Fuel injector No. 1 (HI)
Fuel injector No. 6 (HI)

Input

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

NOTE:
The pulse cycle changes depending 
on rpm at idle

BATTERY VOLTAGE

(11 - 14 V)

[Engine is running]
• Warm-up condition
• Engine speed: 2,000 rpm

BATTERY VOLTAGE

(11 - 14 V)

103

(G)

104

(G)

175

(B)

Fuel injector No. 7 (LO)
Fuel injector No. 4 (LO)

Output

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

NOTE:
The pulse cycle changes depending 
on rpm at idle

BATTERY VOLTAGE

(11 - 14 V)

[Engine is running]
• Warm-up condition
• Engine speed: 2,000 rpm

BATTERY VOLTAGE

(11 - 14 V)

105

(L/W)

175

(B)

High pressure fuel pump (HI)

Input

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

NOTE:
The pulse cycle changes depending 
on rpm at idle

BATTERY VOLTAGE

(11 - 14 V)

[Engine is running]
• Warm-up condition
• Engine speed: 2,000 rpm

BATTERY VOLTAGE

(11 - 14 V)

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

+

Signal name

Input/

Output

JPBIA3345ZZ

JPBIA3347ZZ

JPBIA3355ZZ

JPBIA3356ZZ

JPBIA3340ZZ

JPBIA3341ZZ

ECM

EC-89

< ECU DIAGNOSIS INFORMATION >

[VK56VD]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

106

(R)

107

(R)

175

(B)

Fuel injector No. 7 (HI)
Fuel injector No. 4 (HI)

Output

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

NOTE:
The pulse cycle changes depending 
on rpm at idle

BATTERY VOLTAGE

(11 - 14 V)

[Engine is running]
• Warm-up condition
• Engine speed: 2,000 rpm

BATTERY VOLTAGE

(11 - 14 V)

108

(G)

109

(G)

175

(B)

Fuel injector No. 1 (LO)
Fuel injector No. 6 (LO)

Output

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

NOTE:
The pulse cycle changes depending 
on rpm at idle

BATTERY VOLTAGE

(11 - 14 V)

[Engine is running]
• Warm-up condition
• Engine speed: 2,000 rpm

BATTERY VOLTAGE

(11 - 14 V)

110

(L/B)

175

(B)

High pressure fuel pump (LO)

Input

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

NOTE:
The pulse cycle changes depending 
on rpm at idle

BATTERY VOLTAGE

(11 - 14 V)

[Engine is running]
• Warm-up condition
• Engine speed: 2,000 rpm

BATTERY VOLTAGE

(11 - 14 V)

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

+

Signal name

Input/

Output

JPBIA3345ZZ

JPBIA3347ZZ

JPBIA3355ZZ

JPBIA3356ZZ

JPBIA3342ZZ

JPBIA3343ZZ

 

 

 

 

 

 

 

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