- 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
| Last Modified: 08-22-2025 | 6.11:8.1.0 | Doc ID: RM0000003TPCQ7D |
| Model Year Start: 2026 | Model: GR Corolla | Prod Date Range: [08/2025 - ] |
| Title: HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Gasoline Model with Automatic Air Conditioning System): No Cooling at All; 2026 MY Corolla Corolla Hatchback GR Corolla [08/2025 - ] | ||
|
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) |
|
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) |
|
|
2. |
CONFIRM MODEL |
|
Result |
Proceed to |
|---|---|
|
for Single Type |
A |
|
for Dual Type |
B |
| B |
|
|
|
3. |
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 |
Operates between 165 to 257 |
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 for HFC-134a(R134a): Click here
for HFO-1234yf(R1234yf): Click here
|
![2026 MY Corolla Corolla Hatchback Corolla HV GR Corolla [08/2025 - ]; HEATING / AIR CONDITIONING: REFRIGERANT (for HFC-134a(R134a)): ON-VEHICLE INSPECTION](/t3Portal/stylegraphics/info.gif)
| NG |
|
GO TO DIAGNOSTIC TROUBLE CODE CHART (FOR SERVO MOTOR OF APPLICABLE ABNORMAL OPERATION) |
|
4. |
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 Left Air Mix Damper Control Servo Motor |
This test activates the Front Left Air Mix Damper Control Servo Motor. (No. 1 air conditioning radiator damper servo sub-assembly (front left side air mix)) |
128: Min 384: Max |
Operates between 165 to 257 |
|
Front Right Air Mix Damper Control Servo Motor |
This test activates the Front Right Air Mix Damper Control Servo Motor. (No. 1 air conditioning radiator damper servo sub-assembly (front right side air mix)) |
128: Min 384: Max |
Operates between 255 to 347 |
Body Electrical > Air Conditioner > Active Test
|
Active Test Display |
|---|
|
Front Left Air Mix Damper Control Servo Motor |
|
Data List Display |
|---|
|
Front Left Air Mix Damper Control Servo Motor Actual Pulse |
Body Electrical > Air Conditioner > Active Test
|
Active Test Display |
|---|
|
Front Right Air Mix Damper Control Servo Motor |
|
Data List Display |
|---|
|
Front Right Air Mix Damper Control Servo Motor Actual Pulse |
OK:
Damper servo motor is operated.
| OK |
|
INSPECT REFRIGERANT PRESSURE WITH MANIFOLD GAUGE SET for HFC-134a(R134a): Click here
for HFO-1234yf(R1234yf): Click here
|
| NG |
|
GO TO DIAGNOSTIC TROUBLE CODE CHART (FOR SERVO MOTOR OF APPLICABLE ABNORMAL OPERATION) |
|
|