Engine Coolant Temperature Receiver Gauge Malfunction [10/2022 - 10/2024]: Procedure

1. Check if CAN communication system DTCs are output.

   except Gasoline Model: Refer to DIAGNOSIS SYSTEM [10/2022 - 08/2023] , or refer to DIAGNOSIS SYSTEM [08/2023 - 10/2024]

   for Gasoline Model: Refer to DIAGNOSIS SYSTEM [10/2022 - 08/2023] , or refer to DIAGNOSIS SYSTEM [08/2023 - 10/2024]

   Result

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

Result: 

B 

GO TO CAN COMMUNICATION SYSTEM 

except Gasoline Model: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - 08/2023] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2023 - ]

for Gasoline Model: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - 08/2023] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2023 - ]

Result: 

A 

See step  2

1. 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 

for A25A-FXS: Refer to DIAGNOSTIC TROUBLE CODE CHART [10/2022 - 08/2023] , or refer to DIAGNOSTIC TROUBLE CODE CHART [08/2023 - 10/2024]

for T24A-FTS (for 1Motor-HEV Model): Refer to DIAGNOSTIC TROUBLE CODE CHART [10/2022 - 10/2024]

for T24A-FTS (for Gasoline Model): Refer to DIAGNOSTIC TROUBLE CODE CHART [10/2022 - 08/2023] , or refer to DIAGNOSTIC TROUBLE CODE CHART [08/2023 - 10/2024]

Result: 

A 

See step  3

1. Perform the Active Test according to the display on the GTS.

   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	See [Display 1]
   Water Temperature Meter Operation (60C, 140F)	Engine coolant temperature receiver gauge (60°C, 140°F)	ON	See [Display 1]
   Water Temperature Meter Operation (70C, 158F)	Engine coolant temperature receiver gauge (70°C, 158°F)	ON	See [Display 1]
   Water Temperature Meter Operation (80C, 176F)	Engine coolant temperature receiver gauge (80°C, 176°F)	ON	See [Display 1]
   Water Temperature Meter Operation (Middle)	Engine coolant temperature receiver gauge (Middle)	ON	See [Display 1]
   Water Temperature Meter Operation (110C, 230F)	Engine coolant temperature receiver gauge (110°C, 230°F)	ON	See [Display 1]
   Water Temperature Meter Operation (120C, 248F)	Engine coolant temperature receiver gauge (120°C, 248°F)	ON	See [Display 1]
   Water Temperature Meter Operation (127C, 260F)	Engine coolant temperature receiver gauge (127°C, 260°F)	ON	See [Display 1]

   HINT: 

   [Display 1]: Water Temperature Meter Operation 

   1. Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      *a	Engine Coolant Temperature Receiver Gauge (w/ Headup Display)	*b	Engine Coolant Temperature Receiver Gauge (w/o Headup Display)
      *c	Segments	-	-

      Refer to the following table for the specified engine coolant temperature receiver gauge position for each selected value:

      EXCEPT GASOLINE MODEL
      
      

      Tester Display	Engine Coolant Temperature Receiver Gauge Indication
      Water Temperature Meter Operation (50C, 122F)	Segments illuminate 3/8
      Water Temperature Meter Operation (60C, 140F)	Segments illuminate 4/8
      Water Temperature Meter Operation (70C, 158F)	Segments illuminate 4/8
      Water Temperature Meter Operation (80C, 176F)	Segments illuminate 4/8
      Water Temperature Meter Operation (Middle)	Segments illuminate 4/8
      Water Temperature Meter Operation (110C, 230F)	Segments illuminate 5/8
      Water Temperature Meter Operation (120C, 248F)	Segments illuminate 8/8
      Water Temperature Meter Operation (127C, 260F)	Segments illuminate 8/8

      FOR GASOLINE MODEL
      
      

      Tester Display	Engine Coolant Temperature Receiver Gauge Indication
      Water Temperature Meter Operation (50C, 122F)	Segments illuminate 2/8
      Water Temperature Meter Operation (60C, 140F)	Segments illuminate 2/8
      Water Temperature Meter Operation (70C, 158F)	Segments illuminate 3/8
      Water Temperature Meter Operation (80C, 176F)	Segments illuminate 4/8
      Water Temperature Meter Operation (Middle)	Segments illuminate 4/8
      Water Temperature Meter Operation (110C, 230F)	Segments illuminate 5/8
      Water Temperature Meter Operation (120C, 248F)	Segments illuminate 8/8
      Water Temperature Meter Operation (127C, 260F)	Segments illuminate 8/8

   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)

   Result

   Result	Proceed to
   Active Test can be performed correctly	A
   Active Test cannot be performed correctly	B

Result: 

A 

REPLACE ECM 

for A25A-FXS: Refer to REMOVAL [10/2022 - 08/2023] , or refer to REMOVAL [08/2023 - ]

for T24A-FTS (for 1Motor-HEV Model): Refer to REMOVAL [10/2022 - ]

for T24A-FTS (for Gasoline Model): Refer to REMOVAL [10/2022 - ]

Result: 

B 

REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [10/2022 - 10/2024]