Engine Coolant Temperature Gauge Malfunction [02/2019 - 08/2020]: Procedure

1. Check if CAN communication DTCs are output.

   for HV Model:

   Refer to DIAGNOSIS SYSTEM [02/2019 - 10/2019] , or refer to DIAGNOSIS SYSTEM [10/2019 - 06/2020] , or refer to DIAGNOSIS SYSTEM [06/2020 - 08/2020]

   for Gasoline Model:

   Refer to DIAGNOSIS SYSTEM [02/2019 - 10/2019] , or refer to DIAGNOSIS SYSTEM [10/2019 - 08/2020]

   Result

   Result	Proceed to
   CAN communication DTCs are not output.	A
   CAN communication DTCs are output.	B

Result: 

B 

GO TO CAN COMMUNICATION SYSTEM 

for HV Model:

Refer to DIAGNOSIS SYSTEM [02/2019 - 10/2019] , or refer to DIAGNOSIS SYSTEM [10/2019 - 06/2020] , or refer to DIAGNOSIS SYSTEM [06/2020 - 08/2020]

for Gasoline Model:

Refer to DIAGNOSIS SYSTEM [02/2019 - 10/2019] , or refer to DIAGNOSIS SYSTEM [10/2019 - 08/2020]

Result: 

A 

See step  2

1. Check if SFI system DTCs are output.

   for A25A-FKS with Canister Pump Module:

   Refer to DTC CHECK / CLEAR [11/2018 - 08/2020]

   for A25A-FKS without Canister Pump Module:

   Refer to DTC CHECK / CLEAR [11/2018 - 08/2020]

   for A25A-FXS with Canister Pump Module:

   Refer to DTC CHECK / CLEAR [02/2019 - 08/2020]

   for A25A-FXS without Canister Pump Module:

   Refer to DTC CHECK / CLEAR [11/2018 - 08/2020]

   Powertrain > Engine > Trouble Codes 

   Result

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

Result: 

B 

GO TO SFI SYSTEM 

for A25A-FKS with Canister Pump Module:

Refer to DIAGNOSTIC TROUBLE CODE CHART [11/2018 - 10/2019] , or refer to DIAGNOSTIC TROUBLE CODE CHART [10/2019 - 08/2020]

for A25A-FKS without Canister Pump Module:

Refer to DIAGNOSTIC TROUBLE CODE CHART [11/2018 - 08/2020]

for A25A-FXS with Canister Pump Module:

Refer to DIAGNOSTIC TROUBLE CODE CHART [02/2019 - 10/2019] , or refer to DIAGNOSTIC TROUBLE CODE CHART [10/2019 - 06/2020] , or refer to DIAGNOSTIC TROUBLE CODE CHART [06/2020 - 08/2020]

for A25A-FXS without Canister Pump Module:

Refer to DIAGNOSTIC TROUBLE CODE CHART [11/2018 - 08/2020]

Result: 

A 

See step  3

1. Using the Techstream, perform the Active Test.

   Refer to DATA LIST / ACTIVE TEST [11/2018 - 08/2020]

   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.

   4.2 Inch Model: 

   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)

   7 Inch Model: 

   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)

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE ECM 

for A25A-FKS:

Refer to REMOVAL [11/2018 - 08/2020]

for A25A-FXS:

Refer to REMOVAL [02/2019 - 08/2020]

Result: 

NG 

REPLACE COMBINATION METER ASSEMBLY 

Refer to REMOVAL [11/2018 - 10/2022]