Tachometer Malfunction [11/2021 - ]: Procedure

1. Choose the model to be inspected.

   Result

   Result	Proceed to
   for HEV Model	A
   for Gasoline Model	B

Result: 

B 

See step  5

Result: 

A 

See step  2

1. Check if CAN communication DTCs are output.

   Refer to DIAGNOSIS SYSTEM [11/2021 - 03/2023] , or refer to DIAGNOSIS SYSTEM [03/2023 - 03/2024] , or refer to DIAGNOSIS SYSTEM [03/2024 - ]

   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 [11/2021 - ] 

Result: 

A 

See step  3

1. Check if hybrid control system DTCs are output.

   Powertrain > Hybrid Control > Trouble Codes 

   Result

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

Result: 

B 

GO TO HYBRID CONTROL SYSTEM. Refer to  DIAGNOSTIC TROUBLE CODE CHART [11/2021 - 03/2024]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [03/2024 - ] 

Result: 

A 

See step  4

1. Read the Data List according to the display on the GTS.

   Body Electrical > Combination Meter > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Engine RPM	Engine speed input	Min.: 0 rpm, Max.: 12701 rpm or Unset	Almost the same as actual tachometer	The value displayed on the tachometer may deviate.*

   1. *: For the tolerance of tachometer, refer to Operation Check.

      Refer to OPERATION CHECK [11/2021 - ]

   Body Electrical > Combination Meter > Data List 

   Tester Display
   Engine RPM

   Result

   Result	Proceed to
   The value displayed in the Data List and on the tachometer approximately match	A
   The value displayed in the Data List and on the tachometer do not match	B

Result: 

A 

REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  REMOVAL [11/2021 - ] 

Result: 

B 

REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [11/2021 - ] 

1. Check if CAN communication DTCs are output.

   Refer to DIAGNOSIS SYSTEM [11/2021 - 03/2023] , or refer to DIAGNOSIS SYSTEM [03/2023 - 03/2024] , or refer to DIAGNOSIS SYSTEM [03/2024 - ]

   Result

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

Result: 

B 

GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - ] 

Result: 

A 

See step  6

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-FKS: Refer to DIAGNOSTIC TROUBLE CODE CHART [11/2021 - 03/2022] , or refer to DIAGNOSTIC TROUBLE CODE CHART [03/2022 - 03/2023] , or refer to DIAGNOSTIC TROUBLE CODE CHART [03/2023 - 03/2024] , or refer to DIAGNOSTIC TROUBLE CODE CHART [03/2024 - ]

for T24A-FTS: Refer to DIAGNOSTIC TROUBLE CODE CHART [11/2021 - 03/2023] , or refer to DIAGNOSTIC TROUBLE CODE CHART [03/2023 - 03/2024] , or refer to DIAGNOSTIC TROUBLE CODE CHART [03/2024 - ]

Result: 

A 

See step  7

1. Read the Data List according to the display on the GTS.

   Body Electrical > Combination Meter > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Engine RPM	Engine speed input	Min.: 0 rpm, Max.: 12701 rpm or Unset	Almost the same as actual tachometer	The value displayed on the tachometer may deviate.*

   1. *: For the tolerance of tachometer, refer to Operation Check.

      Refer to OPERATION CHECK [11/2021 - ]

   Body Electrical > Combination Meter > Data List 

   Tester Display
   Engine RPM

   Result

   Result	Proceed to
   The value displayed in the Data List and on the tachometer approximately match	A
   The value displayed in the Data List and on the tachometer do not match	B

Result: 

A 

REPLACE ECM 

for A25A-FKS: Refer to REMOVAL [11/2021 - ]

for T24A-FTS: Refer to REMOVAL [11/2021 - ]

Result: 

B 

REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [11/2021 - ]