Infiniti G35 (V35). Manual - part 449

IGNITION SIGNAL

EC-677

C

D

E

F

G

H

I

J

K

L

M

A

EC

CONDENSER

1.

Turn ignition switch OFF.

2.

Disconnect condenser harness connector.

3.

Check resistance between condenser terminals 1 and 2.

Removal and Installation

NBS0011M

IGNITION COIL WITH POWER TRANSISTOR

Refer to 

EM-35, "IGNITION COIL"

 .

Resistance: Above 1M

Ω

 [at 25

°

C (77

°

F)]

PBIB0794E

EC-678

REFRIGERANT PRESSURE SENSOR

REFRIGERANT PRESSURE SENSOR

PFP:92136

Component Description

NBS0011Z

The refrigerant pressure sensor is installed at the condenser of the
air conditioner system. The sensor uses an electrostatic volume
pressure transducer to convert refrigerant pressure to voltage. The
voltage signal is sent to ECM, and ECM controls cooling fan system.

PBIB1009E

PBIB2657E

REFRIGERANT PRESSURE SENSOR

EC-679

C

D

E

F

G

H

I

J

K

L

M

A

EC

Wiring Diagram

NBS00120

TBWM0366E

EC-680

REFRIGERANT PRESSURE SENSOR

Specification data are reference values and are measured between each terminal and ground.

CAUTION:

Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.

Diagnostic Procedure

NBS00121

1. 

CHECK REFRIGERANT PRESSURE SENSOR OVERALL FUNCTION

1.

Start engine and warm it up to normal operating temperature.

2.

Turn A/C switch and blower fan switch ON.

3.

Check voltage between ECM terminal 70 and ground with CON-
SULT-II or tester.

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 2.

2. 

CHECK GROUND CONNECTIONS

1.

Turn A/C switch and blower fan switch OFF.

2.

Stop engine.

3.

Turn ignition switch OFF.

4.

Loosen and retighten two ground screws on the body. Refer to 

EC-159, "Ground Inspection"

 .

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace ground connections.

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

49

W/L

Sensor power supply
(Refrigerant pressure sen-
sor)

[Ignition switch: ON]

Approximately 5V

67

B/W

Sensor ground

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 0V

70

R/B

Refrigerant pressure sensor

[Engine is running]

●

Warm-up condition

●

Both A/C switch and blower fan switch: ON 
(Compressor operates.)

1.0 - 4.0V

Voltage: 1.0 - 4.0V

PBIB1188E

PBIB2192E