- Compressor assembly with pulley 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
| Last Modified: 07-31-2024 | 6.11:8.1.0 | Doc ID: RM100000001CO0L |
| Model Year Start: 2019 | Model: GR Corolla | Prod Date Range: [06/2018 - 09/2022] |
| Title: HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Gasoline Model with Automatic Air Conditioning System): No Cool Air Comes Out; 2019 - 2022 MY Corolla Corolla Hatchback GR Corolla [06/2018 - 09/2022] | ||
|
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) |
|
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. |
PERFORM ACTIVE TEST USING TECHSTREAM |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Air Conditioner / Active Test.
(e) Perform the Active Test according to the display on the Techstream.
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 |
|
Air Mix Servo Targ Pulse(P) |
No. 1 air conditioning radiator damper servo sub-assembly pulse |
Min.: 128 Max.: 383 |
Operates between 255 and 347 pulses* |
- *: for Dual Type
Body Electrical > Air Conditioner > Active Test
|
Tester Display |
|---|
|
Air Mix Servo Targ Pulse(D) |
Body Electrical > Air Conditioner > Active Test
|
Tester Display |
|---|
|
Air Mix Servo Targ Pulse(P) |
OK:
Each damper servo motor operates.
| OK |
|
INSPECT REFRIGERANT PRESSURE WITH MANIFOLD GAUGE SET
|
![2019 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2018 - 01/2019]; HEATING / AIR CONDITIONING: REFRIGERANT (for HFO-1234yf(R1234yf)): ON-VEHICLE INSPECTION](/t3Portal/stylegraphics/info.gif)
| NG |
|
GO TO DTC TROUBLESHOOTING PROCEDURE FOR MALFUNCTIONING DAMPER SERVO MOTOR
|
|
|