Last Modified: 07-31-2024 6.11:8.1.0 Doc ID: RM1000000028C5I
Model Year Start: 2023 Model: GR Corolla Prod Date Range: [11/2022 -           ]
Title: HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Gasoline Model with Manual Air Conditioning System): No Cooling at All; 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [11/2022 -        ]

No Cooling at All

DESCRIPTION

If cool air is not discharged (air is discharged), the following malfunctions are possible.

Malfunction Status

Factor

Cool air is not discharged (air is discharged)
  • Compressor with pulley assembly malfunction
  • Refrigerant pressure malfunction
  • Lack of refrigerant gas
  • Dirty cooler condenser
  • Cooling fan system malfunction
  • Air mix damper and link operation (jamming)
  • Evaporator temperature sensor (determined as cold, but conflicts with actual temperature)
  • Warm air flow

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.

NG

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

OK

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

This test activates the front air mix damper control servo motor.

(No. 1 air conditioning radiator damper servo sub-assembly (air mix))

128: Min

384: Max

Operate with the ignition switch ON.

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:

Damper servo motor is operated.

OK

INSPECT REFRIGERANT PRESSURE WITH MANIFOLD GAUGE SET

NG

GO TO DIAGNOSTIC TROUBLE CODE CHART (FOR SERVO MOTOR OF APPLICABLE ABNORMAL OPERATION)