Infiniti EX35. Manual — part 685
EC-482
< ECU DIAGNOSIS >
[VQ35HR]
ECM
7
(Y)
128
(B)
Exhaust valve timing con-
trol magnet retarder (bank
2)
Output
[Engine is running]
• Warm-up condition
• Idle speed
BATTERY VOLTAGE
(11 - 14 V)
[Engine is running]
• Warm-up condition
• Around 2,500 rpm while the engine
speed is rising
7 - 12 V
8
(B)
—
ECM ground
—
—
—
11
(GR)
128
(B)
Ignition signal No. 4
Output
[Engine is running]
• Warm-up condition
• Idle speed
NOTE:
The pulse cycle changes depending
on rpm at idle
0 - 0.2 V
12
(L)
Ignition signal No. 3
15
(V)
Ignition signal No. 5
16
(G)
Ignition signal No. 2
[Engine is running]
• Warm-up condition
• Engine speed: 2,000 rpm
0.1 - 0.4 V
19
(SB)
Ignition signal No. 6
20
(Y)
Ignition signal No. 1
17
(P)
84
(B)
Heated oxygen sensor 2
heater (bank 1)
Output
[Engine is running]
• Engine speed: Below 3,600 rpm after
the following conditions 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
10 V
[Ignition switch: ON]
• Engine stopped
[Engine is running]
• Engine speed: Above 3,600 rpm
BATTERY VOLTAGE
(11 - 14 V)
18
(W)
128
(B)
Intake valve timing control
solenoid valve (bank 1)
Output
[Engine is running]
• Warm-up condition
• Idle speed
BATTERY VOLTAGE
(11 - 14 V)
[Engine is running]
• Warm-up condition
• Engine speed: 2,000rpm
7 - 12 V
Terminal No.
(Wire color)
Description
Condition
Value
(Approx.)
+
-–
Signal name
Input/
Output
JMBIA0034GB
JMBIA0035GB
JMBIA0036GB
JMBIA0037GB
JMBIA0038GB
ECM
EC-483
< ECU DIAGNOSIS >
[VQ35HR]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
21
(GR)
128
(B)
EVAP canister purge vol-
ume control solenoid valve
Output
[Engine is running]
• Idle speed
• Accelerator pedal: Not depressed
even slightly, after engine starting
BATTERY VOLTAGE
(11 - 14 V)
[Engine is running]
• Engine speed: About 2,000 rpm
(More than 100 seconds after start-
ing engine)
BATTERY VOLTAGE
(11 - 14 V)
22
(LG)
128
(B)
Fuel pump relay
Output
[Ignition switch: ON]
• For 1 second after turning ignition
switch ON
[Engine is running]
0 - 1.5 V
[Ignition switch: ON]
• More than 1 second after turning ig-
nition switch ON
BATTERY VOLTAGE
(11 - 14 V)
24
(BR)
128
(B)
ECM relay
(Self shut-off)
Output
[Engine is running]
[Ignition switch: OFF]
• A few seconds after turning ignition
switch OFF
0 - 1.5 V
[Ignition switch: OFF]
• More than a few seconds after turn-
ing ignition switch OFF
BATTERY VOLTAGE
(11 - 14 V)
25
(O)
128
(B)
Throttle control motor relay
Output
[Ignition switch: ON
→
OFF]
0 - 1.0 V
↓
BATTERY VOLTAGE
(11 - 14 V)
↓
0 V
[Ignition switch: ON]
0 - 1.0 V
29
(G)
128
(B)
Intake valve timing control
solenoid valve (bank 2)
Output
[Engine is running]
• Warm-up condition
• Idle speed
BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
• Warm-up condition
• Engine speed: 2,000rpm
7 - 12 V
Terminal No.
(Wire color)
Description
Condition
Value
(Approx.)
+
-–
Signal name
Input/
Output
JMBIA0039GB
JMBIA0040GB
JMBIA0038GB
EC-484
< ECU DIAGNOSIS >
[VQ35HR]
ECM
30
(Y)
40
(R)
Throttle position sensor 1
(bank 1)
Input
[Ignition switch: ON]
• Engine stopped
• Selector lever: D
• Accelerator pedal: Fully released
More than 0.36 V
[Ignition switch: ON]
• Engine stopped
• Selector lever: D
• Accelerator pedal: Fully depressed
Less than 4.75 V
31
(R)
48
(B)
Throttle position sensor 1
(bank 2)
Input
[Ignition switch: ON]
• Engine stopped
• Selector lever: D
• Accelerator pedal: Fully released
More than 0.36 V
[Ignition switch: ON]
• Engine stopped
• Selector lever: D
• Accelerator pedal: Fully depressed
Less than 4.75 V
33
(SB)
84
(B)
Heated oxygen sensor 2
heater (bank 2)
Output
[Engine is running]
• Engine speed: Below 3,600 rpm after
the following conditions 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
10 V
[Ignition switch: ON]
• Engine stopped
[Engine is running]
• Engine speed: Above 3,600 rpm
BATTERY VOLTAGE
(11 - 14 V)
34
(L)
40
(R)
Throttle position sensor 2
(bank 1)
Input
[Ignition switch: ON]
• Engine stopped
• Selector lever: D
• Accelerator pedal: Fully released
Less than 4.75 V
[Ignition switch: ON]
• Engine stopped
• Selector lever: D
• Accelerator pedal: Fully depressed
More than 0.36 V
35
(W)
48
(B)
Throttle position sensor 2
(bank 2)
Input
[Ignition switch: ON]
• Engine stopped
• Selector lever: D
• Accelerator pedal: Fully released
Less than 4.75 V
[Ignition switch: ON]
• Engine stopped
• Selector lever: D
• Accelerator pedal: Fully depressed
More than 0.36 V
Terminal No.
(Wire color)
Description
Condition
Value
(Approx.)
+
-–
Signal name
Input/
Output
JMBIA0037GB
ECM
EC-485
< ECU DIAGNOSIS >
[VQ35HR]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
37
(LG)
47
(Y)
Crankshaft position sensor
(POS)
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
40
(R)
—
Sensor ground
[Throttle position sensor
(bank 1)]
—
—
—
43
(G)
48
(B)
Sensor power supply
[Throttle position sensor
(bank 2)]
—
[Ignition switch: ON]
5 V
44
(B)
40
(R)
Sensor power supply
[Throttle position sensor
(bank 1)]
—
[Ignition switch: ON]
5 V
46
(R)
47
(Y)
Sensor power supply
[Crankshaft position sensor
(POS)]
—
[Ignition switch: ON]
5 V
47
(Y)
—
Sensor ground
[Crankshaft position sensor
(POS)]
—
—
—
48
(B)
—
Sensor ground
[Throttle position sensor
(bank 2)]
—
—
—
49
(L)
128
(B)
Throttle control motor
(Close) (bank 2)
Output
[Ignition switch: ON]
• Engine stopped
• Selector lever: D
• Accelerator pedal: In the middle of
releasing operation
0 - 14 V
Terminal No.
(Wire color)
Description
Condition
Value
(Approx.)
+
-–
Signal name
Input/
Output
JMBIA0041GB
JMBIA0042GB
JMBIA0033GB
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