Toyota Camry (XV70): Cooling System

Toyota Camry Repair Manual XV70 (2018-2024) / Vehicle Interior / Heating / Air Conditioning / Air Conditioning System (for Manual Air Conditioning System) / Cooling System

DESCRIPTION

If the cooling effect of the air conditioning system is weak, the following suspected areas may be the cause.

Symptom	Factor
Cooling effectiveness is poor Cooling response is slow	Compressor assembly with pulley (compressor solenoid) malfunction Air conditioning amplifier assembly malfunction Refrigerant volume (high) Refrigerant volume (low) Clogged cooler condenser assembly fins Cooling fan system malfunction Mechanical locking of damper and damper link High inlet air temperature

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

OK

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

NG

GO TO DTC TROUBLESHOOTING PROCEDURE FOR MALFUNCTIONING DAMPER SERVO MOTOR

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Installation

INSTALLATION CAUTION / NOTICE / HINT HINT: Use the same procedure for the RH side and LH side. The following procedure is for the LH side. PROCEDURE 1. INSTALL OUTER MIRROR HOLE COVER ASSEMBLY (for Type A) (a) w/o Panoramic View Monitor System: (1) Engage the guide and 5 claws

Cooling System

DESCRIPTION If the cooling effect of the air conditioning system is weak, the following suspected areas may be the cause. Symptom Factor Cooling effectiveness is poor Cooling response is slow Compressor assembly with pulley (compressor solenoid) malfunction*1

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