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
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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