Last Modified: 05-08-2025 6.11:8.1.0 Doc ID: RM100000001FPEW
Model Year Start: 2019 Model: RAV4 Prod Date Range: [11/2018 -           ]
Title: HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Gasoline Model): Recirculated/Fresh Air Modes do not Switch; 2019 - 2025 MY RAV4 [11/2018 -        ]

Recirculated/Fresh Air Modes do not Switch

DESCRIPTION

If the fresh/recirculation mode does not change or exhaust gas can be smelled even while set to recirculation mode, the following causes are possible.

Malfunction Status

Factor
  • Fresh/recirculation mode does not change
  • Fresh/recirculation mode does not change automatically
  • Exhaust gas can be smelled even while set to recirculation mode
  • Blower servo motor malfunction
  • Blower damper and link operation (jamming)
  • Foreign object jammed in door
  • Air conditioning radiator sub-assembly malfunction
  • High engine coolant temperature

PROCEDURE

1.

CHECK NO. 1 BLOWER DAMPER SERVO SUB-ASSEMBLY

(a) Check that the No. 1 blower damper servo sub-assembly is installed correctly.

OK:

No. 1 blower damper servo sub-assembly is installed correctly.

NG

REINSTALL NO. 1 BLOWER DAMPER SERVO SUB-ASSEMBLY

OK

2.

CHECK FOR DTC

(a) Check for DTCs.

Click here 2019 - 2025 MY RAV4 [11/2018 -        ]; HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Gasoline Model): DTC CHECK / CLEAR

Body Electrical > Air Conditioner > Trouble Codes

OK:

DTC B1442 is not output

NG

GO TO DTC B1442 2019 - 2020 MY RAV4 [11/2018 - 08/2020]; HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Gasoline Model): B1442; Air Inlet Damper Control Servo Motor Circuit 2021 - 2025 MY RAV4 [08/2020 -        ]; HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Gasoline Model): B1442; Air Inlet Damper Control Servo Motor Circuit

OK

3.

READ VALUE USING TECHSTREAM (COOLANT TEMPERATURE)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Engine / Data List.

(e) Read the Data List according to the display on the Techstream.

Powertrain > Engine

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

OK:

The value of the display does not change frequently.

OK

GO TO ON-VEHICLE INSPECTION (CHECK REFRIGERANT PRESSURE USING GAUGE)

NG

GO TO COOLING SYSTEM