Infiniti FX35, FX50 (S51). Manual — part 901
ECM
EC-1145
< ECU DIAGNOSIS INFORMATION >
[VK50VE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
71
(R)
—
Sensor ground
[Throttle position sensor (bank
1)]
—
—
—
72
(Y)
—
Sensor ground
[Throttle position sensor (bank
2)]
—
—
—
73
(L)
71
(R)
Throttle position sensor 1
(bank 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
74
(R)
72
(Y)
Throttle position sensor 2
(bank 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
76
(G)
70
(B)
Battery current sensor
Input
[Engine is running]
• Battery: Fully charged*
2
• Idle speed
2.6 - 3.5 V
77
(B)
72
(Y)
Throttle position sensor 1
(bank 2)
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
78
(Y)
71
(R)
Throttle position sensor 2
(bank 1)
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
(GR)
70
(B)
EVAP control system pressure
sensor
Input
[Ignition switch: ON]
1.8 - 4.8 V
81
(V)
128
(B)
A/F sensor 1 (bank 1)
Input
[Ignition switch: ON]
2.2 V
82
(LG)
128
(B)
A/F sensor 1 (bank 1)
Input
[Engine is running]
• Warm-up condition
• Engine speed: 2,000 rpm
1.8 V
Output voltage varies with air fuel
ratio.
83
(SB)
66
(GR)
Power steering pressure sen-
sor
Output
[Engine is running]
• Steering wheel: Being turned
0.5 - 4.5 V
[Engine is running]
• Steering wheel: Not being turned
0.4 - 0.8 V
Terminal No.
(Wire color)
Description
Condition
Value
(Approx.)
+
–
Signal name
Input/
Output
EC-1146
< ECU DIAGNOSIS INFORMATION >
[VK50VE]
ECM
84
(B)
71
(R)
Sensor power supply
[Throttle position sensor (bank
1)]
—
[Ignition switch: ON]
5 V
85
(Y)
128
(B)
A/F sensor 1 (bank 2)
Input
[Ignition switch: ON]
2.2 V
86
(O)
128
(B)
A/F sensor 1 (bank 2)
Input
[Engine is running]
• Warm-up condition
• Engine speed: 2,000 rpm
1.8 V
Output voltage varies with air fuel
ratio.
87
(R)
68
(B)
Sensor power supply
(Crankshaft position sensor)
—
[Ignition switch: ON]
5 V
88
(Y)
62
(O)
Sensor power supply
[Camshaft position sensor
(bank 2)/ Exhaust valve timing
control position sensor (bank
2)]
—
[Ignition switch: ON]
5 V
89
(P)
—
CAN communication line
(VVEL control module)
Input/
Output
—
—
90
(G)
66
(GR)
Refrigerant pressure sensor
Input
[Engine is running]
• Warm-up condition
• Both A/C switch and blower fan mo-
tor switch: ON (Compressor oper-
ates)
1.0 - 4.0 V
91
(R)
58
(B)
Sensor power supply
[Camshaft position sensor
(bank 1)/ Exhaust valve timing
control position sensor (bank
1)]
—
[Ignition switch: ON]
5 V
92
(W)
66
(GR)
Sensor power supply
(Power steering pressure sen-
sor/ Refrigerant pressure sen-
sor)
—
[Ignition switch: ON]
5 V
93
(LG)
—
CAN communication line
(VVEL control module)
Input/
Output
—
—
95
(Y)
70
(B)
Sensor power supply
[Battery current sensor/ EVAP
control system pressure sen-
sor/ Manifold absolute pres-
sure sensor]
—
[Ignition switch: ON]
5 V
96
(L)
72
(Y)
Sensor power supply
[Throttle position sensor (bank
2)]
—
[Ignition switch: ON]
5 V
Terminal No.
(Wire color)
Description
Condition
Value
(Approx.)
+
–
Signal name
Input/
Output
ECM
EC-1147
< ECU DIAGNOSIS INFORMATION >
[VK50VE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
97
(R)
128
(B)
Engine speed output signal
Output
[Engine is running]
• Warm-up condition
• Idle speed
NOTE:
The pulse cycle changes depending
on rpm at idle
1 V
[Engine is running]
• Engine speed is 2,000 rpm
1 V
99
(L)*
3
(G)*
4
115
(GR)
Sensor power supply
(Accelerator pedal position
sensor 2)
—
[Ignition switch: ON]
5 V
100
(G)*
3
(L)*
4
119
(W)
Sensor power supply
(Accelerator pedal position
sensor 1)
—
[Ignition switch: ON]
5 V
101
(P)
—
CAN communication line
Input/
Output
—
—
102
(SB)
111
(V)
ASCD steering switch
Input
[Ignition switch: ON]
• ASCD steering switch: OFF
4 V
[Ignition switch: ON]
• MAIN switch: Pressed
0 V
[Ignition switch: ON]
• CANCEL switch: Pressed
1 V
[Ignition switch: ON]
• RESUME/ACCELERATE switch:
Pressed
3 V
[Ignition switch: ON]
• SET/COAST switch: Pressed
2 V
102
(SB)
111
(V)
ICC steering switch
Input
[Ignition switch: ON]
• ICC steering switch: OFF
4.2 V
[Ignition switch: ON]
• MAIN switch: Pressed
0 V
[Ignition switch: ON]
• CANCEL switch: Pressed
1.9 V
[Ignition switch: ON]
• RESUME/ACCELERATE switch:
Pressed
3.7 V
[Ignition switch: ON]
• SET/COAST switch: Pressed
3.2 V
[Ignition switch: ON]
• DISTANCE switch: Pressed
2.6 V
[Ignition switch: ON]
• LDP switch: Pressed
1.0 V
Terminal No.
(Wire color)
Description
Condition
Value
(Approx.)
+
–
Signal name
Input/
Output
JMBIA0076GB
JMBIA0077GB
EC-1148
< ECU DIAGNOSIS INFORMATION >
[VK50VE]
ECM
104
(R)
119
(W)
Accelerator pedal position
sensor 1
Input
[Ignition switch: ON]
• Engine: Stopped
• Accelerator pedal: Fully released
0.45 - 1.0 V
[Ignition switch: ON]
• Engine: Stopped
• Accelerator pedal: Fully depressed
4.4 - 4.8 V
105
(L)
—
CAN communication line
Input/
Output
—
—
106
(L)
128
(B)
Ignition switch
Input
[Ignition switch: OFF]
0 V
[Ignition switch: ON]
BATTERY VOLTAGE
(11 - 14 V)
108
(Y)*
3
(P)*
4
115
(GR)
Accelerator pedal position
sensor 2
Input
[Ignition switch: ON]
• Engine: Stopped
• Accelerator pedal: Fully released
0.22 - 0.5 V
[Ignition switch: ON]
• Engine: Stopped
• Accelerator pedal: Fully depressed
2.1 - 2.5 V
110
(P)
128
(B)
Stop lamp switch
Input
[Ignition switch: OFF]
• Brake pedal: Fully released
0 V
[Ignition switch: OFF]
• Brake pedal: Slightly depressed
BATTERY VOLTAGE
(11 - 14 V)
111
(V)
—
Sensor ground
(ASCD steering switch)
—
—
—
112
(LG)
128
(B)
Fuel pump control module
(FPCM) check
Input
[When cranking engine]
0 V
[Engine is running]
• Warm-up condition
• Idle speed
4 - 6 V
114
(GR)
—
Data link connector
Input/
Output
—
—
115
(BR)*
3
(GR)*
4
—
Sensor ground
(Accelerator pedal position
sensor 2)
—
—
—
116
(G)
128
(B)
PNP switch
Input
[Ignition switch: ON]
• Selector lever: P or N position
BATTERY VOLTAGE
(11 - 14 V)
[Ignition switch: ON]
• Selector lever: Except above posi-
tion
0 V
117
(BR)
128
(B)
ASCD brake switch
Input
[Ignition switch: ON]
• Brake pedal: Slightly depressed
0 V
[Ignition switch: ON]
• Brake pedal: Fully released
BATTERY VOLTAGE
(11 - 14 V)
118
(R)
128
(B)
Power supply for ECM
(Back-up)
Input
[Ignition switch: OFF]
BATTERY VOLTAGE
(11 - 14 V)
119
(W)
—
Sensor ground
(Accelerator pedal position
sensor 1)
—
—
—
120
(W)
128
(B)
Fuel tank temperature sensor
Input
[Engine is running]
0 - 4.8 V
Output voltage varies with fuel
tank temperature.
121
(GR)
128
(B)
Power supply for ECM
Input
[Ignition switch: ON]
BATTERY VOLTAGE
(11 - 14 V)
Terminal No.
(Wire color)
Description
Condition
Value
(Approx.)
+
–
Signal name
Input/
Output
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