Infiniti G35 (V35) Sedan. Manual — part 588
EC-498
< ECU DIAGNOSIS >
[VQ35HR]
ECM
88
Ground
LG
Sensor ground
[Exhaust valve timing
control position sensor
(bank 1), Exhaust valve
timing control position
sensor (bank 2)]
—
[Engine is running]
• Warm-up condition
• Idle speed
0V
91
Ground
SB
Battery current sensor
Input
[Engine is running]
• Battery: Fully charged*
2
• Idle speed
2.6 - 3.5V
92
Ground
P
Sensor ground
[Camshaft position sen-
sor (PHASE) (bank 2)]
—
[Engine is running]
• Warm-up condition
• Idle speed
0V
93
Ground
P
Power supply for ECM
(Back-up)
Input
[Ignition switch: OFF]
BATTERY VOLTAGE
(11 - 14V)
94
Ground
LG
Sensor ground
[Mass air flow sensor
(bank 2)]
—
[Engine is running]
• Warm-up condition
• Idle speed
0V
95
Ground
G
Sensor ground
(Battery current sensor)
—
[Engine is running]
• Warm-up condition
• Idle speed
0V
96
Ground
B
Sensor ground
[Camshaft position sen-
sor (PHASE) (bank 1),
Power steering pressure
sensor]
—
[Engine is running]
• Warm-up condition
• Idle speed
0V
97
Ground
R
Accelerator pedal posi-
tion sensor 1
Input
[Ignition switch: ON]
• Engine stopped
• Accelerator pedal: Fully re-
leased
0.5 - 1.0V
[Ignition switch: ON]
• Engine stopped
• Accelerator pedal: Fully de-
pressed
4.2 - 4.8V
98
Ground
P
Accelerator pedal posi-
tion sensor 2
Input
[Ignition switch: ON]
• Engine stopped
• Accelerator pedal: Fully re-
leased
0.25 - 0.50V
[Ignition switch: ON]
• Engine stopped
• Accelerator pedal: Fully de-
pressed
2.0 - 2.5V
99
Ground
L
Sensor power supply
(Accelerator pedal posi-
tion sensor 1)
—
[Ignition switch: ON]
5V
100
Ground
W
Sensor ground
(Accelerator pedal posi-
tion sensor 1)
—
[Engine is running]
• Warm-up condition
• Idle speed
0V
Terminal No.
Wire
color
Description
Condition
Value
(Approx.)
+
-–
Signal name
Input/
Output
ECM
EC-499
< ECU DIAGNOSIS >
[VQ35HR]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
101
Ground
SB
ICC steering switch
(models with ICC sys-
tem)
Input
[Ignition switch: ON]
• ICC steering switch: OFF
4.3V
[Ignition switch: ON]
• MAIN switch: Pressed
0V
[Ignition switch: ON]
• CANCEL switch: Pressed
1.3V
[Ignition switch: ON]
• RESUME/ACCELERATE
switch: Pressed
3.7V
[Ignition switch: ON]
• SET/COAST switch: Pressed
3V
[Ignition switch: ON]
• DISTANCE switch: Pressed
2.2V
101
Ground
SB
ASCD steering switch
(models with ASCD sys-
tem)
Input
[Ignition switch: ON]
• ASCD steering switch: OFF
4V
[Ignition switch: ON]
• MAIN switch: Pressed
0V
[Ignition switch: ON]
• CANCEL switch: Pressed
1V
[Ignition switch: ON]
• RESUME/ACCELERATE
switch: Pressed
3V
[Ignition switch: ON]
• SET/COAST switch: Pressed
2V
102
Ground
LG
EVAP control system
pressure sensor
Input
[Ignition switch: ON]
1.8 - 4.8V
103
Ground
G
Sensor power supply
(Accelerator pedal posi-
tion sensor 2)
—
[Ignition switch: ON]
5V
104
Ground
GR
Sensor ground
(Accelerator pedal posi-
tion sensor 2)
—
[Ignition switch: ON]
• Warm-up condition
• Idle speed
0V
105
Ground
L
Refrigerant pressure
sensor
Input
[Engine is running]
• Warm-up condition
• Both A/C switch and blower fan
motor switch: ON (Compressor
operates)
1.0 - 4.0V
106
Ground
W
Fuel tank temperature
sensor
Input
[Engine is running]
0 - 4.8V
Output voltage varies with fuel
tank temperature.
107
Ground
BR
Sensor power supply
(EVAP control system
pressure sensor)
—
[Ignition switch: ON]
5V
108
Ground
Y
Sensor ground
(ASCD/ICC steering
switch)
—
[Engine is running]
• Warm-up condition
• Idle speed
0V
109
Ground
G (A/
T)
BR
(M/T)
PNP switch
Input
[Ignition switch: ON]
• Selector lever: P or N (A/T), Neu-
tral (M/T)
BATTERY VOLTAGE
(11 - 14V)
[Ignition switch: ON]
• Selector lever: Except above
0V
Terminal No.
Wire
color
Description
Condition
Value
(Approx.)
+
-–
Signal name
Input/
Output
EC-500
< ECU DIAGNOSIS >
[VQ35HR]
ECM
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
*1: This may vary depending on internal resistance of the tester.
**2: Before measuring the terminal voltage, confirm that the battery is fully charged. Refer to
.
110
Ground
R
Engine speed output sig-
nal
Output
[Engine is running]
• Warm-up condition
• Idle speed
NOTE:
The pulse cycle changes de-
pending on rpm at idle
1V
[Engine is running]
• Engine speed is 2,000 rpm
1V
111
Ground
O
Sensor power supply
(Refrigerant pressure
sensor)
—
[Ignition switch: ON]
5V
112
Ground
V
Sensor ground
(EVAP control system
pressure sensor)
—
[Engine is running]
• Warm-up condition
• Idle speed
0V
113
Ground
P
CAN communication line
Input/
Output
—
—
114
Ground
L
CAN communication line
Input/
Output
—
—
116
Ground
W
Sensor ground
(Refrigerant pressure
sensor)
—
[Engine is running]
• Warm-up condition
• Idle speed
0V
117
Ground
V
Data link connector
Input/
Output
[Ignition switch: ON]
• GST: Disconnected
5V - BATTERY VOLTAGE (11 -
14V)
121
Ground
LG
EVAP canister vent con-
trol valve
Output
[Ignition switch: ON]
BATTERY VOLTAGE
(11 - 14V)
122
Ground
P
Stop lamp switch
Input
[Ignition switch: OFF]
• Brake pedal: Fully released
0V
[Ignition switch: OFF]
• Brake pedal: Slightly depressed
BATTERY VOLTAGE
(11 - 14V)
123
124
Ground
B
B
ECM ground
—
[Engine is running]
• Idle speed
Body ground
125
Ground
R
Power supply for ECM
Input
[Ignition switch: ON]
BATTERY VOLTAGE
(11 - 14V)
126
Ground
BR
ICC brake switch (mod-
els with ICC system)
ASCD brake switch
(models with ASCD sys-
tem)
Input
[Ignition switch: ON]
• Brake pedal: Slightly depressed
0V
[Ignition switch: ON]
• Brake pedal: Fully released
BATTERY VOLTAGE
(11 - 14V)
127
128
Ground
B
B
ECM ground
—
[Engine is running]
• Idle speed
Body ground
Terminal No.
Wire
color
Description
Condition
Value
(Approx.)
+
-–
Signal name
Input/
Output
JMBIA0076GB
JMBIA0077GB
ECM
EC-501
< ECU DIAGNOSIS >
[VQ35HR]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
Wiring Diagram — ENGINE CONTROL SYSTEM —
INFOID:0000000000956899
JCBWA0001GB
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