RM3660EC _58 Vehicle Interior _080733 HEATING / AIR CONDITIONING _0591215 AIR CONDITIONING SYSTEM(for Gasoline Model (NR Series) with Manual Air Conditioning System for Electrical Control Type) J

HEATING / AIR CONDITIONING  AIR CONDITIONING SYSTEM(for Gasoline Model (NR Series) with Manual Air Conditioning System for Electrical Control Type)  Cooling is Poor  


DESCRIPTION

If the cooling effect of the air conditioning system is weak, the following factors may be the cause.

Symptom Factor
·

Cooling effectiveness is poor

·

Cooling response is slow


·

Compressor assembly with pulley malfunction

·

Refrigerant volume (high)

·

Refrigerant volume (low)

·

Clogged cooler condenser assembly fins

·

Cooling fan system malfunction

·

Mechanical locking of damper and damper link

·

High inlet air temperature

·

Harness or connector



PROCEDURE

1.PERFORM REFRIGERANT SHORTAGE CHECK
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Enter the following menus: Body Electrical / Air Conditioner / Utility / Refrigerant Gas Volume Check.

Body Electrical > Air Conditioner > Utility
Tester Display
Refrigerant Gas Volume Check
50005 121 2186

e.

Check that the following conditions are met and perform the refrigerant shortage check according to the display on the GTS.

Measurement Condition:
Item Condition
A/C switch On
Ambient temperature* 0 to 49°C (32 to 120°F)
Blower speed HI

*: If the ambient temperature is not within the range shown, do not perform this check.


Result:
Result Amount of Refrigerant
Refrigerant correct Correct
Refrigerant shortage Insufficient


OK:

"Refrigerant correct" is displayed on the GTS.


Result:
Proceed to
OK
NG



OK

2.PERFORM ACTIVE TEST USING GTS

NG

REPAIR REFRIGERANT LEAK

Click hereVehicle Interior>HEATING / AIR CONDITIONING>REFRIGERANT>REPLACEMENT


2.PERFORM ACTIVE TEST USING GTS
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Enter the following menus: Body Electrical / Air Conditioner / Active Test.


e.

Perform the Active Test according to the display on the GTS.

Body Electrical > Air Conditioner > Active Test
Tester Display Measurement Item Control Range Diagnostic Note
Air Mix Servo Targ Pulse(D) No. 1 air conditioning radiator damper servo sub-assembly pulse Min.: 128
Max.: 383 		Operates between 165 and 257 pulses
Body Electrical > Air Conditioner > Active Test
Tester Display
Air Mix Servo Targ Pulse(D)
50004 121 24
OK:

The No. 1 air conditioning radiator damper servo motor operates.



Result:
Proceed to
OK
NG



OK

INSPECT REFRIGERANT PRESSURE WITH MANIFOLD GAUGE SET

Click hereVehicle Interior>HEATING / AIR CONDITIONING>REFRIGERANT>ON-VEHICLE INSPECTION


NG

GO TO DTC TROUBLESHOOTING PROCEDURE FOR MALFUNCTIONING DAMPER SERVO MOTOR

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING SYSTEM (for Gasoline Model (NR Series) with Manual Air Conditioning System for Electrical Control Type)>DIAGNOSTIC TROUBLE CODE CHART