Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM1000000026O6Q
Model Year Start: 2023 Model: RAV4 Prod Date Range: [10/2022 -           ]
Title: METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM: Engine Coolant Temperature Gauge Malfunction; 2023 - 2024 MY RAV4 RAV4 HV [10/2022 -        ]

Engine Coolant Temperature Gauge Malfunction

DESCRIPTION

In this circuit, the combination meter assembly receives engine coolant temperature signals from the ECM via CAN communication. The combination meter assembly displays an engine coolant temperature warning based on the data received from the ECM.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.

HINT:

If there is an open or short in the engine coolant temperature sensor circuit, the ECM stores DTCs. Troubleshoot the SFI system.

for A25A-FKS:

Click here 2021 - 2024 MY RAV4 RAV4 HV [08/2020 -        ]; A25A-FKS (ENGINE CONTROL): SFI SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

for A25A-FXS:

Click here 2021 - 2024 MY RAV4 RAV4 HV [08/2020 -        ]; A25A-FXS (ENGINE CONTROL): SFI SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

PROCEDURE

1.

CHECK CAN COMMUNICATION SYSTEM

(a) Check if CAN communication DTCs are output.

for HV Model:

Click here 2023 MY RAV4 HV [10/2022 - 10/2023]; NETWORKING: CAN COMMUNICATION SYSTEM (for HV Model): DIAGNOSIS SYSTEM 2024 MY RAV4 HV [10/2023 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM (for HV Model): DIAGNOSIS SYSTEM

for Gasoline Model:

Click here 2023 MY RAV4 [10/2022 - 10/2023]; NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model): DIAGNOSIS SYSTEM 2024 MY RAV4 [10/2023 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model): DIAGNOSIS SYSTEM

Result

Proceed to

CAN communication DTCs are not output.

A

CAN communication DTCs are output.

B

B

GO TO CAN COMMUNICATION SYSTEM

for HV Model:

Click here 2023 MY RAV4 HV [10/2022 - 10/2023]; NETWORKING: CAN COMMUNICATION SYSTEM (for HV Model): DIAGNOSIS SYSTEM 2024 MY RAV4 HV [10/2023 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM (for HV Model): DIAGNOSIS SYSTEM

for Gasoline Model:

Click here 2023 MY RAV4 [10/2022 - 10/2023]; NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model): DIAGNOSIS SYSTEM 2024 MY RAV4 [10/2023 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model): DIAGNOSIS SYSTEM

A

2.

CHECK FOR DTC (SFI SYSTEM)

(a) Check if SFI system DTCs are output.

for A25A-FKS:

Click here 2021 - 2024 MY RAV4 RAV4 HV [08/2020 -        ]; A25A-FKS (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR

for A25A-FXS:

Click here 2023 - 2024 MY RAV4 RAV4 HV [10/2022 -        ]; A25A-FXS (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR

Powertrain > Engine > Trouble Codes

Result

Proceed to

SFI system DTCs are not output.

A

SFI system DTC is output.

B

B

GO TO SFI SYSTEM

for A25A-FKS:

Click here 2023 MY RAV4 RAV4 HV [10/2022 - 10/2023]; A25A-FKS (ENGINE CONTROL): SFI SYSTEM: DIAGNOSTIC TROUBLE CODE CHART 2024 MY RAV4 RAV4 HV [10/2023 -        ]; A25A-FKS (ENGINE CONTROL): SFI SYSTEM: DIAGNOSTIC TROUBLE CODE CHART

for A25A-FXS:

Click here 2023 - 2024 MY RAV4 RAV4 HV [10/2022 -        ]; A25A-FXS (ENGINE CONTROL): SFI SYSTEM: DIAGNOSTIC TROUBLE CODE CHART

A

3.

CHECK VEHICLE CONDITION

(a) Check vehicle condition.

Result

Proceed to

for 7 Inch Multi-information Display Type

A

for 12.3 Inch Multi-information Display Type

B

B

GO TO STEP 5

A

4.

PERFORM ACTIVE TEST USING TECHSTREAM

(a) Using the Techstream, perform the Active Test.

Click here 2023 - 2024 MY RAV4 RAV4 HV [10/2022 -        ]; METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM: DATA LIST / ACTIVE TEST

Body Electrical > Combination Meter > Active Test

Tester Display

Measurement Item

Control Range

Water Temperature Meter Operation (50C,122F)

Engine coolant temperature receiver gauge 50°C (122°F)

ON

Water Temperature Meter Operation (60C,140F)

Engine coolant temperature receiver gauge 60°C (140°F)

ON

Water Temperature Meter Operation (70C,158F)

Engine coolant temperature receiver gauge 70°C (158°F)

ON

Water Temperature Meter Operation (80C,176F)

Engine coolant temperature receiver gauge 80°C (176°F)

ON

Water Temperature Meter Operation (Middle)

Engine coolant temperature receiver gauge (Middle)

ON

Water Temperature Meter Operation (110C,230F)

Engine coolant temperature receiver gauge 110°C (230°F)

ON

Water Temperature Meter Operation (120C,248F)

Engine coolant temperature receiver gauge 120°C (248°F)

ON

Water Temperature Meter Operation (127C,260F)

Engine coolant temperature receiver gauge 127°C (260°F)

ON

Body Electrical > Combination Meter > Active Test

Tester Display

Water Temperature Meter Operation (50C,122F)

Body Electrical > Combination Meter > Active Test

Tester Display

Water Temperature Meter Operation (60C,140F)

Body Electrical > Combination Meter > Active Test

Tester Display

Water Temperature Meter Operation (70C,158F)

Body Electrical > Combination Meter > Active Test

Tester Display

Water Temperature Meter Operation (80C,176F)

Body Electrical > Combination Meter > Active Test

Tester Display

Water Temperature Meter Operation (Middle)

Body Electrical > Combination Meter > Active Test

Tester Display

Water Temperature Meter Operation (110C,230F)

Body Electrical > Combination Meter > Active Test

Tester Display

Water Temperature Meter Operation (120C,248F)

Body Electrical > Combination Meter > Active Test

Tester Display

Water Temperature Meter Operation (127C,260F)

OK:

Engine coolant temperature receiver gauge indication is normal.

*a

Water Temperature Meter Operation (50C,122F)

*b

Water Temperature Meter Operation (60C,140F)

*c

Water Temperature Meter Operation (70C,158F)

*d

Water Temperature Meter Operation (80C,176F)

*e

Water Temperature Meter Operation (Middle)

*f

Water Temperature Meter Operation (110C,230F)

*g

Water Temperature Meter Operation (120C,248F)

*h

Water Temperature Meter Operation (127C,260F)

OK

REPLACE ECM

for A25A-FKS:

Click here 2023 MY RAV4 [10/2022 - 10/2023]; A25A-FKS (ENGINE CONTROL): ECM: REMOVAL 2024 MY RAV4 [10/2023 -        ]; A25A-FKS (ENGINE CONTROL): ECM: REMOVAL

for A25A-FXS:

Click here 2023 MY RAV4 HV [10/2022 - 10/2023]; A25A-FXS (ENGINE CONTROL): ECM: REMOVAL 2024 MY RAV4 HV [10/2023 -        ]; A25A-FXS (ENGINE CONTROL): ECM: REMOVAL

NG

REPLACE COMBINATION METER ASSEMBLY

5.

READ VALUE USING TECHSTREAM (COOLANT TEMPERATURE)

(a) Using the Techstream, read the Data List.

Click here 2023 - 2024 MY RAV4 RAV4 HV [10/2022 -        ]; METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM: DATA LIST / ACTIVE TEST

Body Electrical > Combination Meter > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Coolant Temperature

Engine coolant temperature

Min.: 0°C (0°F), Max.: 127.5°C (261.5°F)

75 to 100°C (167 to 212°F): After warming up the engine

-

Body Electrical > Combination Meter > Data List

Tester Display

Coolant Temperature

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 oil temperature.

for Gasoline Model:

HINT:

  • After warming up the engine, the engine oil temperature will be 80 to 110°C (176 to 230°F).
  • After a long soak, the engine oil temperature, intake air temperature and ambient air temperature will be approximately equal.
  • If the value is -40°C (-40°F), or higher than 168°C (334°F), the sensor circuit is open or shorted.

for HV Model:

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

HINT:

  • When the Data List values of the ECUs match, an internal malfunction of the ECM is suspected.
  • When the Data List values of the ECUs do not match, a signal output error of the ECM or an internal malfunction of the combination meter assembly is suspected.

OK:

The Data List values of the ECUs do not match.

OK

REPLACE ECM

for A25A-FKS:

Click here 2023 MY RAV4 [10/2022 - 10/2023]; A25A-FKS (ENGINE CONTROL): ECM: REMOVAL 2024 MY RAV4 [10/2023 -        ]; A25A-FKS (ENGINE CONTROL): ECM: REMOVAL

for A25A-FXS:

Click here 2023 MY RAV4 HV [10/2022 - 10/2023]; A25A-FXS (ENGINE CONTROL): ECM: REMOVAL 2024 MY RAV4 HV [10/2023 -        ]; A25A-FXS (ENGINE CONTROL): ECM: REMOVAL

NG

REPLACE COMBINATION METER ASSEMBLY