Engine Coolant Temperature Receiver Gauge Malfunction [08/2019 - ]: Procedure

1. Check if a CAN communication DTC is output.

   Refer to DIAGNOSIS SYSTEM [08/2019 - 08/2020] , or refer to DIAGNOSIS SYSTEM [08/2020 - 08/2021] , or refer to DIAGNOSIS SYSTEM [08/2021 - ]

   Result

   Result	Proceed to
   CAN communication DTC is not output	A
   CAN communication DTC is output	B

Result: 

B 

GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - ] 

Result: 

A 

See step  2

1. Check for DTCs.

   Refer to DTC CHECK / CLEAR [08/2015 - ]

   Result

   Result	Proceed to
   SFI system DTCs are not output.	A
   SFI system DTC is output.	B

Result: 

B 

GO TO SFI SYSTEM. Refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2019 - 08/2020]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2020 - 08/2021]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2021 - 08/2022]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2022 - ] 

Result: 

A 

See step  3

1. Using the Techstream, perform the Active Test.

   Refer to DATA LIST / ACTIVE TEST [08/2019 - ]

   BODY ELECTRICAL > COMBINATION METER > ACTIVE TEST
   
   

   Tester Display	Measurement Item	Control Range	Diagnostic Note
   Water Temperature Meter Operation	Engine coolant temperature receiver gauge	OFF, LOW, NORMAL, HIGH	See [Display]

   1. [Display]: Engine coolant temperature receiver gauge

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      *a	Water Temperature Gauge Operation (LOW)
      *b	Water Temperature Gauge Operation (NORMAL)
      *c	Water Temperature Gauge Operation (HIGH)

      OK

      Engine coolant temperature receiver gauge indication is normal.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE ECM. Refer to  REMOVAL [08/2015 - ] 

Result: 

NG 

REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [08/2019 - ]