Cooling is Poor [12/2019 - 10/2022]: Procedure

1. 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.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  2

1. Prepare the vehicle according to the table below.
   MEASUREMENT CONDITION:
   
   

   Item	Condition
   Vehicle Condition	Engine running
   A/C Switch	On
   Ambient Temperature*1	0 to 49°C (32 to 120°F)
   Air Conditioning Air Inlet Temperature*2	25 to 35°C (77 to 95°F)
   Set Temperature	MAX COLD
   Recirculation/fresh Control Switch	Recirculation
   Air Vent Damper Position	FACE
   Blower Speed	HI

   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.

2. Using the GTS, check the amount of refrigerant.

   Body Electrical > Air Conditioner > Utility 

   Tester Display
   Refrigerant Gas Volume Check

   NOTE:

   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.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

CHARGE SYSTEM WITH REFRIGERANT. Refer to  REPLACEMENT [12/2019 - ] 

Result: 

OK 

See step  3

1. 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
   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
   Rear Air Mix Servo Targ Pulse	Rear air mix damper servo sub-assembly pulse	Min.: 128 Max.: 383	Operates between 213 to 258 pulses

   Body Electrical > Air Conditioner > Active Test 

   Tester Display
   Air Mix Servo Targ Pulse(D)

   Body Electrical > Air Conditioner > Active Test 

   Tester Display
   Rear Air Mix Servo Targ Pulse

   OK

   Damper servo motor is operated.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

INSPECT REFRIGERANT PRESSURE WITH MANIFOLD GAUGE SET. Refer to  ON-VEHICLE INSPECTION [12/2019 - ] 

Result: 

NG 

GO TO DIAGNOSTIC TROUBLE CODE CHART (FOR SERVO MOTOR OF APPLICABLE ABNORMAL OPERATION). Refer to  DIAGNOSTIC TROUBLE CODE CHART [12/2019 - 10/2022]