Nissan Skyline R32 air conditioner sensor inspection

(1) Outside air sensor
Disconnect outside air sensor connector, and measure resistance value between terminals on sensor side. 
NOTE:
Perform this check with ignition switch set in OFF position. If the outside air sensor connector or auto amplifier connector is disconnected with the ignition switch ON, the outside air temperature is sensed as extremely low. If the connector is connected after turning the ignition switch OFF, and if the ignition switch is set again to ON, the outside air temperature correcting function prevents the sensing value from rising quickly to correct level. As a result, the compressor remains OFF, and heating function operates. In this case, disconnect the outside air sensor with the ignition switch ON, and then reconnect the sensor connector.
 
Nissan Skyline GT-R32 Air conditioner sensor inspection
 
Nissan Skyline GT-R32 Air conditioner sensor inspection
 
(2) Inside air sensor
Disconnect inside air sensor connector, and measure resistance between terminals on sensor side.
 
Nissan Skyline GT-R32 Air conditioner sensor inspection
 
Nissan Skyline GT-R32 Air conditioner sensor inspection
 
(3) Water temperature sensor
Disconnect water temperature sensor connector, and measure resistance value between terminals on sensor side.
 
Nissan Skyline GT-R32 Air conditioner sensor inspection
 
Nissan Skyline GT-R32 Air conditioner sensor inspection
 
(4) Intake air temperature sensor
Disconnect intake air temperature sensor connector, and measure resistance between terminals on sensor side.
 
Nissan Skyline GT-R32 Air conditioner sensor inspection
 
Nissan Skyline GT-R32 Air conditioner sensor inspection
 
(5) Sunload sensor
With sunload sensor connector connected, measure voltage between terminals.
  

Ignition switch

Terminals

Standard value

Positive (+)

Negative (-)

ON

(1)

(2)

See characteris­tic curve.

 

 NOTE:
When performing this check indoors, move a 60 watt lamp toward or away from sensor while reading voltage.
Reference: 
Sunload by direct sunlight during fine weather is equivalent to 0.768 kW (660 kcal/h, 2,619 BTU/h)/m2 [0.0713 kW (61.31 kcal/h, 243.4 BTU/h)/sq ft].
 
Nissan Skyline GT-R32 Air conditioner sensor inspection
 
Nissan Skyline GT-R32 Air conditioner sensor inspection
 
(6) PBR
With air mix door actuator connector connected, measure voltage between terminals.
  

Ignition switch

Terminals

Standard value

Positive (+)

Negative (-)

ON

3

5

See characteris­tic curve.

 

 
Nissan Skyline GT-R32 Air conditioner sensor inspection
 
Nissan Skyline GT-R32 Air conditioner sensor inspection
 
(7) Refrigerant temperature sensor
Disconnect refrigerant temperature sensor connector, and measure resistance between terminals on sensor side.
 
Nissan Skyline GT-R32 Air conditioner sensor inspection