- Cooling effectiveness is poor
- Cooling response is slow
| Last Modified: 11-20-2023 | 6.11:8.1.0 | Doc ID: RM1000000015P9O |
| Model Year Start: 2018 | Model: Camry | Prod Date Range: [06/2017 - 10/2020] |
| Title: HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Manual Air Conditioning System): Cooling System; 2018 - 2020 MY Camry [06/2017 - 10/2020] | ||
|
Cooling System |
DESCRIPTION
If the cooling effect of the air conditioning system is weak, the following suspected areas may be the cause.
|
Symptom |
Factor |
|---|---|
|
|
|
PROCEDURE
|
1. |
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 |
|
REPAIR REFRIGERANT LEAK for HFC-134a (R134a): Click here
for HFO-1234yf (R1234yf): Click here
|
![2018 - 2020 MY Camry [06/2017 - 10/2020]; HEATING / AIR CONDITIONING: REFRIGERANT (for HFC-134a(R134a)): REPLACEMENT](/t3Portal/stylegraphics/info.gif)
|
|
2. |
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 |
|---|---|---|---|
|
Blower Motor |
Blower motor with fan sub-assembly |
Min.: 0 Max.: 31 |
- |
|
Air Mix Servo Targ Pulse(D) |
No. 1 air conditioning radiator damper servo sub-assembly (air mix) pulse |
Min.: 128 Max.: 383 |
Operates between 165 to 257 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 |
Body Electrical > Air Conditioner > Active Test
|
Tester Display |
|---|
|
Blower Motor |
Body Electrical > Air Conditioner > Active Test
|
Tester Display |
|---|
|
Air Mix Servo Targ Pulse(D) |
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 |
OK:
The blower motor with fan sub-assembly and each damper servo motor operates.
| OK |
|
INSPECT REFRIGERANT PRESSURE WITH MANIFOLD GAUGE SET for HFC-134a (R134a): Click here
for HFO-1234yf (R1234yf): Click here
|
| NG |
|
GO TO DTC TROUBLESHOOTING PROCEDURE FOR MALFUNCTIONING DAMPER SERVO MOTOR
|
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