Last Modified: 05-08-2025 6.11:8.1.0 Doc ID: RM100000001HIRF
Model Year Start: 2019 Model: RAV4 HV Prod Date Range: [02/2019 -           ]
Title: HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for HV Model): A/C Switch Indicator does not Turn On; 2019 - 2025 MY RAV4 HV [02/2019 -        ]

A/C Switch Indicator does not Turn On

DESCRIPTION

If none of the indicators on the air conditioning control assembly illuminate, the following malfunctions are possible.

Malfunction Status

Factor

None of the indicators on the air conditioning control assembly illuminate
  • Air conditioning amplifier assembly malfunction
  • A/C switch (air conditioning control assembly) malfunction
  • Malfunction in one of the servo motors (initialization incomplete)
  • Damper and link operation (jamming)
  • Refrigerant pressure malfunction (low pressure)
  • Low ambient temperature (including thermistor assembly)

PROCEDURE

1.

CHECK MALFUNCTION STATUS

(a) Check the malfunction status of switch indicators on the air conditioning control assembly.

Result

Proceed to

A/C switch indicators are not always illuminated

A

A/C switch indicators are not illuminated only immediately after starting the hybrid control system

B
B

GO TO INITIALIZATION

A

2.

READ VALUE USING TECHSTREAM (AMBIENT TEMP SENSOR)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Air Conditioner / Data List.

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

Body Electrical > Air Conditioner > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Ambient Temp Sensor

Thermistor assembly

Min.: -23.30°C (-9.94°F)

Max.: 65.95°C (150.71°F)

Actual ambient temperature displayed

Thermistor assembly system malfunction

  • When open circuit: -23.30°C (-9.94°F)
  • When short circuit: 65.95°C (150.71°F)

Body Electrical > Air Conditioner > Data List

Tester Display

Ambient Temp Sensor

OK:

The display is as specified in the normal condition column (0°C (32°F) or higher).

OK

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

NG

GO TO AMBIENT TEMPERATURE DISPLAY SYSTEM 2019 - 2020 MY RAV4 HV [02/2019 - 06/2020]; HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for HV Model): Ambient Temperature Display System 2020 MY RAV4 HV [06/2020 - 08/2020]; HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for HV Model): Ambient Temperature Display System 2021 - 2025 MY RAV4 HV [08/2020 -        ]; HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for HV Model): Ambient Temperature Display System