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