HEATING / AIR CONDITIONING  AIR CONDITIONING SYSTEM(for Gasoline Model)  Cooling is Poor  

Confirm that ECO HEAT/COOL switch (air conditioning control assembly) is set to off.

Confirm that ECO drive mode is set to off.

HINT:

When the ECO drive mode is set to ON, the air conditioning amplifier assembly performs minimal air conditioning control in order to promote the improvement of fuel economy. Ensure that the customer understands that the airflow volume will be decreased compared to normal operation.

Control	Control Summary
Air Volume Control	Sets the blower level to less.

Prepare the vehicle according to the table below.

HINT:

*1: This inspection can be judged correctly only if the ambient temperature is within a range of 0 to 49°C (32 to 120°F). Therefore, postpone the test if the temperature is low.

*2: This inspection can be judged correctly only if the air inlet temperature is within a range of 25 to 35°C (77 to 95°F). Therefore, postpone the test if the temperature is out of range.

Using the GTS, check the amount of refrigerant.

Body Electrical > Air Conditioner > Utility

Tester Display
Refrigerant Gas Volume Check

50005 450 4578

NOTICE:

If the conditions for the inspection are not met, "Refrigerant incorrect" will be displayed on the GTS. Confirm the conditions of the inspection and perform the check again.

HINT:

·

If the amount of refrigerant is insufficient, "Refrigerant shortage" is displayed on the GTS and the indicator light on the A/C switch turns off.

·

When performing this inspection, a DTC will not be output even if "Refrigerant shortage" is displayed on the GTS.

Result:

Result	Amount of Refrigerant
Refrigerant shortage	Insufficient or leakage
Refrigerant correct	Correct
Refrigerant incorrect	Incorrect

OK:

"Refrigerant correct" is displayed on the GTS.

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	Operate with ignition switch ON.
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	Operate with ignition switch ON.

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

50004 450 26 201

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

50004 450 28 205

OK:

Damper servo motor is operated.

Disconnect the E74 automatic light control sensor connector.

Disconnect the E37 main body ECU (multiplex network body ECU) connector.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
Click Location & Routing(E74,E37)Location & Routingewd_type=routing;type=c,c;code=E74,E37 Click Connector(E74)Instrument Panel>Instrument Panel Wire / Telephone Computer Wire>Automatic Light Control Sensorewd_type=component;type=c;code=E74;pinno=1,2,4 Click Connector(E37)Instrument Panel>Instrument Panel Wire / Telephone Computer Wire>Multiplex Network Body ECUewd_type=component;type=c;code=E37;pinno=8,21,20
E74-1 (CLTB) - E37-8 (CLTB)	Always	Below 1 Ω
E74-2 (CLTE) - E37-21 (CLTE)	Always	Below 1 Ω
E74-4 (CLTS) - E37-20 (CLTS)	Always	Below 1 Ω
E74-1 (CLTB) or E37-8 (CLTB) - Other terminals and body ground	Always	10 kΩ or higher
E74-2 (CLTE) or E37-21 (CLTE) - Other terminals and body ground	Always	10 kΩ or higher
E74-4 (CLTS) or E37-20 (CLTS) - Other terminals and body ground	Always	10 kΩ or higher