- Compressor assembly with pulley (compressor solenoid) malfunction*1
- Cooler compressor assembly (compressor solenoid) malfunction*2
- Refrigerant volume (low)
- Mechanical locking of damper and damper link
- Automatic light control sensor malfunction
- Harness or connector
| Last Modified: 11-20-2023 | 6.11:8.1.0 | Doc ID: RM100000001R3ZI |
| Model Year Start: 2021 | Model: Camry | Prod Date Range: [10/2020 - 08/2021] |
| Title: HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Automatic Air Conditioning System): Air Vent Temperature does not Change and Right Vent is Different from Left and Vice Versa (Same Left/Right Temperature Setting); 2021 MY Camry [10/2020 - 08/2021] | ||
|
Air Vent Temperature does not Change and Right Vent is Different from Left and Vice Versa (Same Left/Right Temperature Setting) |
DESCRIPTION
If the temperature of the air that blows from the left and right front registers differs, even though the same temperature is set for both sides, the following suspected areas may be the cause.
|
Symptom |
Factor |
|---|---|
|
Temperature of outlet air is cooler on left or right side (when same temperature set for both sides) |
|
|
Temperature of outlet air is warmer on left or right side (when same temperature set for both sides) |
|
- *1: for A25A-FKS
- *2: for 2GR-FKS
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
-
If DTC B1244 is output, troubleshoot for DTC B1244 first.
Click here
![2018 - 2024 MY Camry [03/2017 - ]; LIGHTING (EXT): LIGHTING SYSTEM: B1244; Light Sensor Circuit](/t3Portal/stylegraphics/info.gif)
- Before replacing the main body ECU (multiplex network body ECU), refer to Registration.
PROCEDURE
|
1. |
CHECK WHEN MALFUNCTION OCCURS |
Result |
Proceed to |
|---|---|
|
When using cooling function |
A |
|
When using heater function |
B |
| B |
|
|
|
2. |
PERFORM REFRIGERANT SHORTAGE CHECK |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Air Conditioner / Utility / Refrigerant Gas Volume Check.
Body Electrical > Air Conditioner > Utility
|
Tester Display |
|---|
|
Refrigerant Gas Volume Check |
(e) Check that the following conditions are met and perform the refrigerant shortage check according to the display on the Techstream.
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 Techstream.
| NG |
|
|
|
3. |
PERFORM ACTIVE TEST USING TECHSTREAM |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(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 (driver side air mix*1 or air mix*2) pulse |
Min.: 128 Max.: 383 |
Operates between 165 to 257 pulses |
|
Air Mix Servo Targ Pulse(P) |
No. 1 air conditioning radiator damper servo sub-assembly (front passenger side air mix) pulse*1 |
Min.: 128 Max.: 383 |
Operates between 255 to 347 pulses |
|
Air Outlet Servo Pulse (D) |
No. 1 air conditioning radiator damper servo sub-assembly (mode) pulse |
Min.: 128 Max.: 383 |
Operates between 241 to 348 pulses |
|
Air Inlet Damper Targ Pulse |
No. 1 blower damper servo sub-assembly pulse |
Min.: 128 Max.: 383 |
Operates between 220 to 256 pulses |
|
A/O Servo Pulse(Rr D) |
No. 2 air conditioning radiator damper servo sub-assembly pulse*1 |
Min.: 128 Max.: 383 |
Operates between 158 to 260 pulses |
- *1: for Dual Type
- *2: for Single 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) |
Body Electrical > Air Conditioner > Active Test
|
Tester Display |
|---|
|
Air Outlet Servo Pulse (D) |
Body Electrical > Air Conditioner > Active Test
|
Tester Display |
|---|
|
Air Inlet Damper Targ Pulse |
Body Electrical > Air Conditioner > Active Test
|
Tester Display |
|---|
|
A/O Servo Pulse(Rr D) |
OK:
Each damper servo motor operates.
| NG |
|
GO TO DTC TROUBLESHOOTING PROCEDURE FOR MALFUNCTIONING DAMPER SERVO MOTOR |
|
|
4. |
CHECK HARNESS AND CONNECTOR (AUTOMATIC LIGHT CONTROL SENSOR - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) |
(a) Disconnect the M1 automatic light control sensor connector.
(b) Disconnect the K52 main body ECU (multiplex network body ECU) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
M1-1 (CLTB) - K52-23 (CLTB) |
Always |
Below 1 Ω |
|
M1-2 (CLTE) - K52-25 (CLTE) |
Always |
Below 1 Ω |
|
M1-4 (CLTS) - K52-24 (CLTS) |
Always |
Below 1 Ω |
|
M1-1 (CLTB) or K52-23 (CLTB) - Other terminals and body ground |
Always |
10 kΩ or higher |
|
M1-2 (CLTE) or K52-25 (CLTE) - Other terminals and body ground |
Always |
10 kΩ or higher |
|
M1-4 (CLTS) or K52-24 (CLTS) - Other terminals and body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
5. |
INSPECT AUTOMATIC LIGHT CONTROL SENSOR |
(a) Remove the automatic light control sensor.
Click here
(b) Inspect the automatic light control sensor.
Click here
| OK |
|
| NG |
|
|
6. |
BLEED AIR FROM COOLING SYSTEM |
for A25A-FKS: Click here
for 2GR-FKS: Click here
|
|
7. |
CHECK OPERATION (AIR CONDITIONING SYSTEM) |
(a) Set the same temperature for the left and right sides and check that the air that blows from the left and right front registers is the same temperature.
OK:
The air from the left and right front registers is the same temperature.
| OK |
|
END (MALFUNCTION DUE TO AIR IN COOLING SYSTEM) |
|
|
8. |
PERFORM ACTIVE TEST USING TECHSTREAM |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(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 (driver side air mix*1 or air mix*2) pulse |
Min.: 128 Max.: 383 |
Operates between 165 to 257 pulses |
|
Air Mix Servo Targ Pulse(P) |
No. 1 air conditioning radiator damper servo sub-assembly (front passenger side air mix) pulse*1 |
Min.: 128 Max.: 383 |
Operates between 255 to 347 pulses |
|
Air Outlet Servo Pulse (D) |
No. 1 air conditioning radiator damper servo sub-assembly (mode) pulse |
Min.: 128 Max.: 383 |
Operates between 241 to 348 pulses |
|
Air Inlet Damper Targ Pulse |
No. 1 blower damper servo sub-assembly pulse |
Min.: 128 Max.: 383 |
Operates between 220 to 256 pulses |
|
A/O Servo Pulse(Rr D) |
No. 2 air conditioning radiator damper servo sub-assembly pulse*1 |
Min.: 128 Max.: 383 |
Operates between 158 to 260 pulses |
- *1: for Dual Type
- *2: for Single 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) |
Body Electrical > Air Conditioner > Active Test
|
Tester Display |
|---|
|
Air Outlet Servo Pulse (D) |
Body Electrical > Air Conditioner > Active Test
|
Tester Display |
|---|
|
Air Inlet Damper Targ Pulse |
Body Electrical > Air Conditioner > Active Test
|
Tester Display |
|---|
|
A/O Servo Pulse(Rr D) |
OK:
Each damper servo motor operates.
| OK |
|
| NG |
|
GO TO DTC TROUBLESHOOTING PROCEDURE FOR MALFUNCTIONING DAMPER SERVO MOTOR |
|
|