Nissan Skyline R32 air conditioner actuator inspection
 
(2) Intake door system
Before inspection, check intake door actuator and automatic amplifier connectors.
 
Nissan Skyline GT-R32 air conditioner actuator inspection
 
(2) Air mix door system
Before inspection, check air mix door actuator and automatic amplifier connectors.
 
Nissan Skyline GT-R32 air conditioner actuator inspection
 
Nissan Skyline GT-R32 air conditioner actuator inspection
 
[Point 1] Nissan Skyline R32 air conditioner intake door actuator power inspection
• Remove intake door actuator, and measure voltage between vehicle-side connector and GND.
  

Measuring

range

Ignition switch

Measuring terminals

Standard

value

Positive (+)

Negative (-)

(V)

ON

(1)

GND

Approx. 12V

  

Nissan Skyline GT-R32 air conditioner actuator inspection
 
[Point 2] Automatic amplifier output inspection
• Remove automatic amplifier, and measure voltage by applying circuit tester probes to 16-terminal connector. Use step 4 of self-diagnostic mode and keep connector connected during measurement.
 

 

Measuring range

Ignition switch

Measuring terminal

Digital display value

Standard value

Remarks

(+)

(-)

(V)

ON (Self-diag­nostic mode)

(24)

GND

41,42, 43

Approx. 0V

Inside

air

Others

Approx. 12V

(25)

44

Approx. 0V

Half-out-

side air

Others

Approx. 12V

(26)

45, 46, 47

Approx. 0V

Outside

air

Others

Approx. 12V

 

 
NOTE:
If standard value of approx. 12V is not present, internal circuit of intake door actuator may be disconnected.
 
Nissan Skyline GT-R32 air conditioner actuator inspection
 
[Point 3] Automatic amplifier output inspection
• With air mix door actuator connector connected, measure voltage using step 4 of self-diagnostic mode.
  

Measuring

range

Ignition switch

Measuring terminal

Digital

display

value

Standard value

Function

of air mix door

(+)

(-)

(V)

ON (Self diag­nostic mode)

(1)

(2)

43 -> 44

Approx. 10V

Moves to full hot

(2)

(3)

47 -> 41

Approx. 10V

Moves to full cold

  

(3) Blower motor system
Before inspection, check blower motor, fan control amplifier, HI relay and automatic amplifier connectors.
 
1 Blower motor fails to run in HI position.
 
Nissan Skyline GT-R32 air conditioner actuator inspection
 
2 Unable to change blower motor speed, or motor fails to run at any position other than HI.
 
Nissan Skyline GT-R32 air conditioner actuator inspection
 
Nissan Skyline GT-R32 air conditioner actuator inspection
 
[Point 4] Nissan Skyline R32 air conditioner HI relay power and GND circuit inspection
• Disconnect HI relay connector, and measure voltage and check continuity between vehicle-side connector and GND.
  

Measuring range

Ignition switch

Fan switch

Measuring terminals

Standard

value

(+)

(-)

(V)

ACC

OFF

(3)

GND

Approx.

12V

ON

(2)

Ω

OFF

(5)

0 Ω

 

 
Nissan Skyline GT-R32 air conditioner actuator inspection
 
[Point 5] Automatic amplifier output inspection
• With HI relay connector connected, measure voltage using step 4 of self-diagnostic mode.
 

Measuring range

Ignition switch

Measuring terminals

Digital dis­play value

Standard

value

(+)

(-)

(V)

ON (Self-diagnostic mode)

(1)

GND

41-46

Approx.

12V

47

Below 1.5V

 

 Nissan Skyline GT-R32 air conditioner actuator inspection
 
[Point 6] Nissan Skyline R32 air conditioner fan control amplifier power and GND circuit inspection
• Disconnect fan control amplifier connector, and measure voltage and check continuity between vehicle-side connector and GND.
 

Measuring

range

Ignition switch

Fan switch

Measuring terminals

Standard

value

(+)

(-)

(V)

ACC

OFF

(1)

GND

Approx. 12V

Ω

OFF

(2)

0 Ω

  

Nissan Skyline GT-R32 air conditioner actuator inspection
 
[Point 7] Automatic amplifier output inspection
• With fan control amplifier connector connected, measure voltage using step 4 of self-diagnostic mode.
 

Measuring range

Ignition switch

Measuring terminals

Digital dis­play value

Standard

value

(+)

(-)

(V)

ON (Self-diagnostic mode)

(4)

GND

41 -46

-3V

  

(4) Compressor system
Before inspection, check air conditioner relay, dual pressure switch, automatic amplifier magnet clutch
connectors.
1 Magnet clutch system
 
Nissan Skyline GT-R32 air conditioner actuator inspection
 
Nissan Skyline GT-R32 air conditioner actuator inspection
 
[Point 8] Nissan Skyline R32 air conditioner relay power supply and magnet clutch circuit inspection
• Remove air conditioner relay, and measure voltage and resistance between vehicle-side connector and GND.
  

Measuring

range

Ignition switch

Measuring terminal

Standard

value

Remarks

(+)

(-)

(V)

ON

(2)

GND

Approx. 12V

IGN power

ACC

(3)

ACC power

Ω

OFF

(5)

Approx. 3.5Ω

Magnet clutch coil resistance

  

Nissan Skyline GT-R32 air conditioner actuator inspection
 
[Point 9] Magnet clutch inspection
• Disconnect magnet clutch connector, and measure resistance between clutch-side connector and GND.
   

Measuring range

Measuring terminals

Standard value

(+)

(-)

Ω

(1)

GND

Approx. 3.5 Ω

  

Nissan Skyline GT-R32 air conditioner actuator inspection
 
[Point 10] Air conditioner control circuit inspection
• With harness connected to ECCS control unit, measure voltage and check relay operation by applying tester probes as shown.
1 Air conditioner control circuit inspection
  

Measuring range

Ignition switch

Measuring terminals

Standard

value

(+)

(-)

Ω

ON

(9)

GND

Approx. 12V

  

2 Air conditioner relay operation inspection
 

Ignition switch

Terminal to be shorted to GND

Air conditioner relay operation

ON (Engine is running)

(46)

Air conditioner relay must turn ON.

  

Nissan Skyline GT-R32 air conditioner actuator inspection
 
[Point 11] Dual pressure switch continuity inspection
• Disconnect dual pressure switch connector, and measure resistance by applying tester probes to switch side connector as shown.
 

Measuring range

Measuring terminals

Standard value

Ω

(1) – (2)

Approx. 

  

NOTE:
If dual pressure switch is OFF, the cause may be a faulty air conditioner cycle.
 
2 Control valve system
 
Nissan Skyline GT-R32 air conditioner actuator inspection
 
Nissan Skyline GT-R32 air conditioner actuator inspection
 
[Point 12] Automatic amplifier output signal inspection
• Remove automatic amplifier. With connector connected, measure voltage by applying tester probes to the 20-terminal connector using step 4 of self-diagnostic mode.
  

Measuring range

Ignition switch

Measuring terminals

Digital dis­play value

Standard value

(+)

(-)

(V)

ON (Self-diagnostic mode)

(34)

GND

41

Арргох1V

42,45

Approx. 4.5V

43, 44, 47

Approx. 2V

  

Nissan Skyline GT-R32 air conditioner actuator inspection
 
[Point 13] Coil resistance inspection in control valve
• Disconnect control valve connector, and measure resistance of coil by applying tester probes to valve-side connector.
 

Measuring range

Measuring terminals

Standard value

Ω

(1) – (2)

Approx. 7 Ω