Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Front Window Fogging

Toyota Corolla Cross (2022-2025) Service Manual / Vehicle Interior / Heating / Air Conditioning / Air Conditioning System (for Hev Model) / Front Window Fogging

DESCRIPTION

If the windshield frequently fogs up even though the air conditioning system is operating, the following factors may be the cause.

Symptom

Factor

Windshield frequently fogs up
  • Compressor with pulley assembly malfunction
  • Refrigerant volume (low)
  • Cooler expansion valve (opened excessively)
  • No. 1 air conditioning radiator damper servo sub-assembly malfunction
  • Mechanical locking of damper and damper link

PROCEDURE

1.

PERFORM REFRIGERANT SHORTAGE CHECK

(a) Perform the Utility according to the display on the GTS.

Body Electrical > Air Conditioner > Utility

Tester Display

Refrigerant Gas Volume Check

(b) 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

Amount of Refrigerant

Refrigerant correct

Correct

Refrigerant shortage

Insufficient

OK:

"Refrigerant correct" is displayed on the GTS.

NG

CHARGE SYSTEM WITH REFRIGERANT

OK

2.

CHECK OPERATION

(a) Press the front defroster switch on the air conditioning control assembly and check that the air outlet mode changes to DEF mode.

OK:

The air outlet mode changes to DEF mode.

OK

INSPECT REFRIGERANT PRESSURE WITH MANIFOLD GAUGE SET

NG

GO TO DTC B14037F

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