Infiniti EX35. Manual — part 929
HAC-112
< ECU DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
ECM
18
Ground
W
Intake valve timing con-
trol solenoid valve (bank
1)
Output
[Engine is running]
• Warm-up condition
• Idle speed
BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
• Warm-up condition
• Engine speed: 2,000rpm
7 - 12V
21
Ground
GR
EVAP canister purge vol-
ume control solenoid
valve
Output
[Engine is running]
• Idle speed
• Accelerator pedal: Not de-
pressed even slightly, after en-
gine starting
BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
• Engine speed: About 2,000 rpm
(More than 100 seconds after
starting engine)
BATTERY VOLTAGE
(11 - 14V)
22
Ground
LG
Fuel pump relay
Output
[Ignition switch: ON]
• For 1 second after turning igni-
tion switch ON
[Engine is running]
0 - 1.5V
[Ignition switch: ON]
• More than 1 second after turning
ignition switch ON
BATTERY VOLTAGE
(11 - 14V)
24
Ground
BR
ECM relay
(Self shut-off)
Output
[Engine is running]
[Ignition switch: OFF]
• A few seconds after turning igni-
tion switch OFF
0 - 1.5V
[Ignition switch: OFF]
• More than a few seconds after
turning ignition switch OFF
BATTERY VOLTAGE
(11 - 14V)
25
Ground
O
Throttle control motor re-
lay
Output
[Ignition switch: ON
→
OFF]
0 - 1.0V
↓
BATTERY VOLTAGE
(11 - 14V)
↓
0V
[Ignition switch: ON]
0 - 1.0V
Terminal No.
Wire
color
Description
Condition
Value
(Approx.)
+
-–
Signal name
Input/
Output
JMBIA0038GB
JMBIA0039GB
JMBIA0040GB
ECM
HAC-113
< ECU DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
29
Ground
G
Intake valve timing con-
trol 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 - 12V
30
Ground
Y
Throttle position sensor
1 (bank 1)
Input
[Ignition switch: ON]
• Engine stopped
• Selector lever: D (A/T) or 1st (M/
T)
• Accelerator pedal: Fully re-
leased
More than 0.36V
[Ignition switch: ON]
• Engine stopped
• Selector lever: D (A/T) or 1st (M/
T)
• Accelerator pedal: Fully de-
pressed
Less than 4.75V
31
Ground
R
Throttle position sensor
1 (bank 2)
Input
[Ignition switch: ON]
• Engine stopped
• Selector lever: D (A/T) or 1st (M/
T)
• Accelerator pedal: Fully re-
leased
More than 0.36V
[Ignition switch: ON]
• Engine stopped
• Selector lever: D (A/T) or 1st (M/
T)
• Accelerator pedal: Fully de-
pressed
Less than 4.75V
33
Ground
SB
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 be-
tween 3,500 and 4,000 rpm for 1
minute and at idle for 1 minute
under no load
10V
[Ignition switch: ON]
• Engine stopped
[Engine is running]
• Engine speed: Above 3,600 rpm
BATTERY VOLTAGE
(11 - 14V)
Terminal No.
Wire
color
Description
Condition
Value
(Approx.)
+
-–
Signal name
Input/
Output
JMBIA0038GB
JMBIA0037GB
HAC-114
< ECU DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
ECM
34
Ground
L
Throttle position sensor
2 (bank 1)
Input
[Ignition switch: ON]
• Engine stopped
• Selector lever: D (A/T) or 1st (M/
T)
• Accelerator pedal: Fully re-
leased
Less than 4.75V
[Ignition switch: ON]
• Engine stopped
• Selector lever: D (A/T) or 1st (M/
T)
• Accelerator pedal: Fully de-
pressed
More than 0.36V
35
Ground
W
Throttle position sensor
2 (bank 2)
Input
[Ignition switch: ON]
• Engine stopped
• Selector lever: D (A/T) or 1st (M/
T)
• Accelerator pedal: Fully re-
leased
Less than 4.75V
[Ignition switch: ON]
• Engine stopped
• Selector lever: D (A/T) or 1st (M/
T)
• Accelerator pedal: Fully de-
pressed
More than 0.36V
37
Ground
LG
Crankshaft position sen-
sor (POS)
Input
[Engine is running]
• Warm-up condition
• Idle speed
NOTE:
The pulse cycle changes de-
pending on rpm at idle
4.0 - 5.0
[Engine is running]
• Engine speed: 2,000 rpm
4.0 - 5.0
40
Ground
R
Sensor ground
[Throttle position sensor
(bank 1)]
—
[Engine is running]
• Warm-up condition
• Idle speed
0V
43
Ground
G
Sensor power supply
[Throttle position sensor
(bank 2)]
—
[Ignition switch: ON]
5V
44
Ground
B
Sensor power supply
[Throttle position sensor
(bank 1)]
—
[Ignition switch: ON]
5V
46
Ground
R
Sensor power supply
[Crankshaft position sen-
sor (POS)]
—
[Ignition switch: ON]
5V
47
Ground
Y
Sensor ground
[Crankshaft position sen-
sor (POS)]
—
[Engine is running]
• Warm-up condition
• Idle speed
0V
Terminal No.
Wire
color
Description
Condition
Value
(Approx.)
+
-–
Signal name
Input/
Output
JMBIA0041GB
JMBIA0042GB
ECM
HAC-115
< ECU DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
48
Ground
B
Sensor ground
[Throttle position sensor
(bank 2)]
—
[Engine is running]
• Warm-up condition
• Idle speed
0V
49
Ground
L
Throttle control motor
(Close) (bank 2)
Output
[Ignition switch: ON]
• Engine stopped
• Selector lever: D (A/T) or 1st (M/
T)
• Accelerator pedal: In the middle
of releasing operation
0 - 14V
50
Ground
V
Throttle control motor
(Open) (bank 2)
Output
[Ignition switch: ON]
• Engine stopped
• Selector lever: D (A/T) or 1st (M/
T)
• Accelerator pedal: Fully de-
pressed
0 - 14V
[Ignition switch: ON]
• Engine stopped
• Selector lever: D (A/T) or 1st (M/
T)
• Accelerator pedal: Fully re-
leased
0 - 14V
52
Ground
R
Throttle control motor re-
lay power supply (bank
2)
Input
[Ignition switch: ON]
BATTERY VOLTAGE
(11 - 14V)
53
Ground
P
Ignition switch
Input
[Ignition switch: OFF]
0V
[Ignition switch: ON]
BATTERY VOLTAGE
(11 - 14V)
57
Ground
L
A/F sensor 1 (bank 1)
Input
[Ignition switch: ON]
2.2V
58
Ground
GR
Exhaust valve timing
control position sensor
(bank 1)
Input
[Engine is running]
• Warm-up condition
• Idle speed
NOTE:
The pulse cycle changes de-
pending on rpm at idle
4.0 - 5.0
[Engine is running]
• Warm-up condition
• Engine speed: 2,000 rpm
4.0 - 5.0
Terminal No.
Wire
color
Description
Condition
Value
(Approx.)
+
-–
Signal name
Input/
Output
JMBIA0033GB
JMBIA0031GB
JMBIA0032GB
JMBIA0043GB
JMBIA0044GB
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