Engine Coolant Temperature Receiver Gauge Malfunction [04/2018 - 08/2020]: Procedure

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CHECK CAN COMMUNICATION SYSTEM

Check if CAN communication system DTCs are output.

Refer to DIAGNOSIS SYSTEM [04/2018 - 08/2020]

Result

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

Result:

B

GO TO CAN COMMUNICATION SYSTEM. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [04/2018 - ]

Result:

A

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:

B

GO TO SFI SYSTEM. Refer to DIAGNOSTIC TROUBLE CODE CHART [04/2018 - 08/2019] , or refer to DIAGNOSTIC TROUBLE CODE CHART [08/2019 - 08/2020]

Result:

A

See step 3

PERFORM ACTIVE TEST USING TECHSTREAM

GTY880970

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.

Body Electrical > Combination Meter > Active Test

Tester Display	Measurement Item	Control Range	Diagnostic Note
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.

Result

Proceed to
OK
NG

Result:

OK

REPLACE ECM. Refer to REMOVAL [04/2018 - 08/2021]

Result:

NG

REPLACE COMBINATION METER ASSEMBLY. Refer to REMOVAL [04/2018 - 08/2020]