Toyota Corolla Cross: No Cool Air Comes Out

Toyota Corolla Cross (2022-2025) Service Manual / Vehicle Interior / Heating / Air Conditioning / Air Conditioning System (for Gasoline Model With Manual Air Conditioning System) / No Cool Air Comes Out

DESCRIPTION

If warm air blows from the registers regardless of the temperature setting of the air conditioning system, the following factors may be the cause.

Symptom	Factor
No cool air comes out (Blower control is normal)	Compressor with pulley assembly malfunction Refrigerant pressure is extremely high or low Refrigerant volume (low) Clogged cooler condenser assembly fins Cooling fan system malfunction Mechanical locking of damper and damper link No. 1 cooler thermistor malfunction High inlet air temperature

Symptom

Factor

No cool air comes out

(Blower control is normal)

Compressor with pulley assembly malfunction
Refrigerant pressure is extremely high or low
Refrigerant volume (low)
Clogged cooler condenser assembly fins
Cooling fan system malfunction
Mechanical locking of damper and damper link
No. 1 cooler thermistor malfunction
High inlet air temperature

PROCEDURE

1.	CHECK SWITCH INDICATOR

(a) Operate each switch on the air conditioning control assembly and check that the switch indicators operate normally.

OK:

All switch indicators operate normally.

GO TO OTHER DIAGNOSIS PROCEDURE (Operation not Accepted Even If Air Conditioning Switch is Operated)

2.	PERFORM ACTIVE TEST USING GTS

(a) 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
Front Air Mix Damper Control Servo Motor	No. 1 air conditioning radiator damper servo sub-assembly pulse	Min.: 128 Max.: 384	-

Tester Display

Measurement Item

Control Range

Diagnostic Note

Front Air Mix Damper Control Servo Motor

No. 1 air conditioning radiator damper servo sub-assembly pulse

Min.: 128

Max.: 384

Body Electrical > Air Conditioner > Active Test

Active Test Display
Front Air Mix Damper Control Servo Motor

Data List Display
Front Air Mix Damper Control Servo Motor Actual Pulse

OK:

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

INSPECT REFRIGERANT PRESSURE WITH MANIFOLD GAUGE SET

GO TO DTC TROUBLESHOOTING PROCEDURE FOR MALFUNCTIONING DAMPER SERVO MOTOR

SEE MORE:

Data List / Active Test

DATA LIST / ACTIVE TEST NOTICE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not. When using the GTS with the ignition switch off, connect the GTS to the DLC3 a

Precaution

PRECAUTION PRECAUTION WHEN REPLACING CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) (a) When the central gateway ECU (network gateway ECU) is replaced, update the ECU security key. Click here PRECAUTIONS FOR DISCONNECTING CABLE FROM NEGATIVE (-) AUXILIARY BATTERY TERMINAL NOTICE: After the i

Toyota Corolla Cross: No Cool Air Comes Out

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Data List / Active Test

Precaution