Air Vent Temperature does not Change and Right Vent is Different from Left and Vice Versa (Same Left/Right Temperature Setting) [08/2020 - 12/2021]: Procedure

Result

Result: 

B 

See step  6

Result: 

A 

See step  2

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Air Conditioner / Utility / Refrigerant Gas Volume Check.

   Body Electrical > Air Conditioner > Utility 

   Tester Display
   Refrigerant Gas Volume Check

5. Check that the following conditions are met and perform the refrigerant shortage check according to the display on the Techstream.
   MEASUREMENT CONDITION:
   
   

   Item	Condition
   Vehicle Condition	Ignition switch ON (READY)
   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: 

   • Refer to the Techstream operator's manual for further details.
   • A message indicating a refrigerant shortage is displayed on the Techstream and the air conditioning system turns off if the amount of refrigerant in the system is insufficient.
   • DTCs are not stored when performing the refrigerant shortage check using the Techstream.
   • *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.

   Result

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

   OK

   "Refrigerant correct" is displayed on Techstream.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

CHARGE SYSTEM WITH REFRIGERANT 

Refer to REPLACEMENT [02/2019 - ]

Result: 

OK 

See step  3

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Air Conditioner / Active Test.
5. Check the operation by referring to the table below.

   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) 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	Min.: 128 Max.: 383	Operates between 255 to 347 pulses

   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)

   OK

   Damper servo motor is operated.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

GO TO DTC OF APPLICABLE SERVO MOTOR OPERATING ABNORMALLY 

Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2020 - ]

Result: 

OK 

See step  4

1. Disconnect the H1 automatic light control sensor connector.
2. Disconnect the G44 main body ECU (multiplex network body ECU) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   H1-1 (CLTB) - G44-23 (CLTB)	Always	Below 1 Ω
   H1-2 (CLTE) - G44-25 (CLTE)	Always	Below 1 Ω
   H1-4 (CLTS) - G44-24 (CLTS)	Always	Below 1 Ω
   H1-1 (CLTB) or G44-23 (CLTB) - Other terminals and body ground	Always	10 kΩ or higher
   H1-2 (CLTE) or G44-25 (CLTE) - Other terminals and body ground	Always	10 kΩ or higher
   H1-4 (CLTS) or G44-24 (CLTS) - Other terminals and body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  5

1. Remove the automatic light control sensor.

   Refer to REMOVAL [08/2020 - 12/2021]

2. Inspect the automatic light control sensor.

   Refer to ON-VEHICLE INSPECTION [11/2018 - ]

   Result

   Proceed to
   OK
   NG

Result: 

OK 

GO TO ON-VEHICLE INSPECTION 

Refer to PROCEDURE - Step 2

Result: 

NG 

REPLACE AUTOMATIC LIGHT CONTROL SENSOR 

Refer to REMOVAL [08/2020 - 12/2021]

Refer to REPLACEMENT [11/2018 - ]

Result

Result: 

NEXT 

See step  7

1. Check that there is not a difference in temperature between the left and right air outlets.

   OK

   There is not a difference in temperature between the left and right air outlets.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END (FAILURE DUE TO AIR ENTERING COOLANT) 

Result: 

NG 

See step  8

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Air Conditioner / Active Test.
5. Check the operation by referring to the table below.

   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) operation	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) operation	Min.: 128 Max.: 383	Operates between 255 to 347 pulses

   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)

   OK

   Damper servo motor is operated.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE HEATER RADIATOR UNIT SUB-ASSEMBLY 

Refer to DISASSEMBLY [08/2020 - ]

Result: 

NG 

GO TO DIAGNOSTIC TROUBLE CODE CHART (FOR SERVO MOTOR OF APPLICABLE ABNORMAL OPERATION) 

Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2020 - ]