Infiniti G37 Coupe. Manual - part 782

 

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Infiniti G37 Coupe. Manual - part 782

 

 

ECM

HAC-117

< 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.)

110

(R)

128

(B)

Engine speed output sig-
nal

Output

[Engine is running]
• Warm-up condition
• Idle speed

NOTE:
The pulse cycle changes depending on 
rpm at idle

1V

[Engine is running]
• Engine speed is 2,000 rpm

1V

111

(O)

116

(P)

Sensor power supply
(Refrigerant pressure 
sensor)

[Ignition switch: ON]

5V

112

(SB)

Sensor ground
(EVAP control system 
pressure sensor)

113

(P)

CAN communication line

Input/

Output

114

(L)

CAN communication line

Input/

Output

116

(P)

Sensor ground
(Refrigerant pressure 
sensor)

117

(V)

128

(B)

Data link connector

Input/

Output

[Ignition switch: ON]
• GST: Disconnected

5V - BATTERY VOLTAGE (11 - 
14V)

121

(LG)

128

(B)

EVAP canister vent con-
trol valve

Output

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14V)

122

(P)

128

(B)

Stop lamp switch

Input

[Ignition switch: OFF]
• Brake pedal: Fully released

0V

[Ignition switch: OFF]
• Brake pedal: Slightly depressed

BATTERY VOLTAGE
(11 - 14V)

123

(B)

124

(B)

ECM ground

125

(R)

128

(B)

Power supply for ECM

Input

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14V)

126

(BR)

128

(B)

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

(B)

128

(B)

ECM ground

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

+

-–

Signal  name

Input/

Output

JMBIA0076GB

JMBIA0077GB

HAC-118

< ECU DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

ECM

*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"

.

AUTO AMP.

HAC-119

< ECU DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

AUTO AMP.

Reference Value

INFOID:0000000001675737

TERMINAL LAYOUT

PHYSICAL VALUES

JSIIA0097ZZ

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

+

Signal name

Input/

Output

38

(L)

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

HAC-120

< ECU DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

AUTO AMP.

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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