Engine Coolant Temperature Receiver Gauge Malfunction [08/2020 - ]: Procedure

CHECK CAN COMMUNICATION SYSTEM

Check if CAN communication system DTCs are output.

Refer to DIAGNOSIS SYSTEM [08/2020 - 08/2021] , or refer to DIAGNOSIS SYSTEM [08/2021 - 09/2022] , or refer to DIAGNOSIS SYSTEM [09/2022 - ]

Result

Result	Proceed to
DTCs are not output	A
DTCs are output	B

Result:

GO TO CAN COMMUNICATION SYSTEM. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ]

Result:

See step 2

CHECK FOR DTC (SFI SYSTEM)

Check if SFI system DTCs are output.

Powertrain > Engine > Trouble Codes

Result

Result	Proceed to
DTCs are not output	A
DTCs are output	B

Result:

GO TO SFI SYSTEM

for 2GR-FKS: Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2020 - 08/2021] , or refer to DIAGNOSTIC TROUBLE CODE CHART [08/2021 - ]

for A25A-FKS: Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2020 - 08/2021] , or refer to DIAGNOSTIC TROUBLE CODE CHART [08/2021 - 09/2022] , or refer to DIAGNOSTIC TROUBLE CODE CHART [09/2022 - ]

Result:

See step 3

CONFIRM MODEL

Choose the model to be inspected.

Result

Result	Proceed to
for F SPORT Models	A
except F SPORT Models	B

Result:

See step 5

Result:

See step 4

READ VALUE USING TECHSTREAM

Connect the Techstream to the DLC3.
Turn the engine switch on (IG).
Turn the Techstream on.
Enter the following menus: Body Electrical / Combination Meter / Data List.

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

Body Electrical > Combination Meter > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Coolant Temperature	Engine coolant temperature	Min.: 0.0°C, Max.: 127.1°C or Unset	75 to 100°C: After warming up engine	-

Body Electrical > Combination Meter > Data List

Tester Display
Coolant Temperature

Engine coolant temperature receiver gauge indication is normal.

Result

Proceed to
OK
NG

Result:

REPLACE ECM

for 2GR-FKS: Refer to REMOVAL [10/2019 - 08/2021] , or refer to REMOVAL [08/2021 - 09/2022] , or refer to REMOVAL [09/2022 - ]

for A25A-FKS: Refer to REMOVAL [08/2020 - 08/2021] , or refer to REMOVAL [08/2021 - 09/2022] , or refer to REMOVAL [09/2022 - ]

Result:

REPLACE COMBINATION METER ASSEMBLY. Refer to REMOVAL [06/2018 - 08/2021] , or refer to REMOVAL [08/2021 - ]

PERFORM ACTIVE TEST USING TECHSTREAM

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*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)

Connect the Techstream to the DLC3.
Turn the engine switch on (IG).
Turn the Techstream on.
Enter the following menus: Body Electrical / Combination Meter / Active Test.

Perform the Active Test according to the display on the Techstream.