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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