No Warm Air Comes Out [04/2018 - 08/2019]: Procedure

WARNING: This page is about a different variant/trim than selected.

CHECK FOR DTC

Check for DTCs.

Powertrain > Engine > Trouble Codes

SFI system DTCs are not output.

Result

Proceed to
OK
NG

Result:

GO TO SFI SYSTEM. Refer to DIAGNOSTIC TROUBLE CODE CHART [04/2018 - 08/2019]

Result:

See step 2

READ VALUE USING TECHSTREAM

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Turn the Techstream on.
Enter the following menus: Powertrain / Engine / Data List.

Read the Data List according to the display on the Techstream.

Powertrain > Engine > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Coolant Temperature	Engine coolant temperature	Min.: -40°C (-40°F), Max.: 140°C (284°F)	75 to 100°C (167 to 212°F): After warming up	This is the engine coolant temperature. HINT: After warming up the engine, the engine coolant temperature will be 75 to 100°C (167 to 212°F). After a long soak, the engine coolant temperature, intake air temperature and ambient air temperature will be approximately equal. If the value is -40°C (-40°F), or higher than 135°C (275°F), the sensor circuit is open or shorted. Check if the engine overheats if the value indicated is higher than 135°C (275°F).

Powertrain > Engine > Data List

Tester Display
Coolant Temperature

After warming up the engine, the temperature value displayed is within the range specified in the normal condition column.

Result

Proceed to
OK
NG

Result:

GO TO COOLING SYSTEM. Refer to ON-VEHICLE INSPECTION [04/2018 -]

Result:

See step 3

PERFORM ACTIVE TEST USING TECHSTREAM

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Turn the Techstream on.
Enter the following menus: Body Electrical / Air Conditioner / Active Test.

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
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 and 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 and 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)

Each damper servo motor operates.

Result

Proceed to
OK
NG

Result:

GO TO DTC TROUBLESHOOTING PROCEDURE FOR MALFUNCTIONING DAMPER SERVO MOTOR. Refer to DIAGNOSTIC TROUBLE CODE CHART [04/2018 - 08/2020]

Result:

See step 4

PERFORM ACTIVE TEST USING TECHSTREAM

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Turn the Techstream on.

Enter the following menus: Body Electrical / Air Conditioner / Active Test / Heater Active Level / Data List / Electric Heater Active Level.

Body Electrical > Air Conditioner > Active Test

Tester Display	Measurement Item	Control Range	Diagnostic Note
Heater Active Level	Quick heater assembly	Min.: 0 Max.: 2	-

Body Electrical > Air Conditioner > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Electric Heater Active Level	Actual electric heater operation level	Min.: 0 Max.: 2	Actual operation level of electric heater displayed	PTC heater circuit malfunction

Body Electrical > Air Conditioner > Active Test

Active Test Display
Heater Active Level

Data List Display
Electric Heater Active Level

Check that the value of the Data List item Electric Heater Active Level changes in accordance with the set value of the Active Test item Heater Active Level.

Techstream Operation	Data List (Electric Heater Active Level)
0 to 2	0 to 2

Result

Proceed to
OK
NG

Result:

REPLACE HEATER RADIATOR UNIT SUB-ASSEMBLY. Refer to DISASSEMBLY [04/2018 - 08/2019]

Result:

GO TO PTC HEATER CIRCUIT. Refer to PTC Heater Circuit [04/2018 - 08/2019]