Infiniti EX35. Manual - part 931

 

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Infiniti EX35. Manual - part 931

 

 

HAC-120

< ECU DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

ECM

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

ECM

HAC-121

< ECU DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

: 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 

PG-3, "How to Handle Battery"

.

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

HAC-122

< ECU DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

AUTO AMP.

AUTO AMP.

Reference Value

INFOID:0000000003545646

TERMINAL LAYOUT

PHYSICAL VALUES

JSIIA0097ZZ

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

+

Signal name

Input/

Output

38

(P)

Ground

Blower motor control signal

 Output

• Ignition switch ON
• Blower speed: 1st speed 

(manual)

41

(V)

Ground

Power supply from ACC

Ignition switch ACC

Battery voltage

43

(R)

Ground

Intake sensor

Input

44

(LG)

Ground

In-vehicle sensor

Input

45

( P)

Ground

Ambient sensor

Input

46

(O)

Ground

Sunload sensor

Input

53

(G)

Ground

Power supply from IGN

Ignition switch ON

Battery voltage

54

(Y)

Ground

Power supply from BAT

Ignition switch OFF

Battery voltage

55

(B)

Ground

Ground

Ignition switch ON

0 V

59

(GR)

Ground

Intake sensor ground

0 V

60

(L)

Ground

In-vehicle sensor ground

Ignition switch ON

0 V

61

( BR)

Ground

Ambient sensor ground

Ignition switch ON

0 V

62

(SB)

Ground

Sunload sensor ground

Ignition switch ON

0 V

JSIIA0096ZZ

AUTO AMP.

HAC-123

< ECU DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

65

(O)

Ground

ECV (Electrical Control 
Valve) signal

Output

• Ignition switch ON
• Self-diagnosis. STEP-4

(Code No. 45)

69

(L)

Ground

A/C LAN signal

Input/

Output

Ignition switch ON

70

(R)

Ground

Power supply for each door 
motor

Output

Ignition switch ON

Battery voltage

71

( B)

Ground

Ground

Ignition switch ON

 0 V

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

+

Signal name

Input/

Output

SJIA1607E

SJIA1453J

 

 

 

 

 

 

 

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