Tachometer Malfunction [10/2018 - 07/2022]: Procedure

1. Check if CAN communication DTCs are output.
   1. for HV Model:

      Refer to DIAGNOSIS SYSTEM [10/2018 - 10/2019] Refer to DIAGNOSIS SYSTEM [10/2019 - 08/2021] Refer to DIAGNOSIS SYSTEM [08/2021 - 07/2022]

   2. for Gasoline Model:

      Refer to DIAGNOSIS SYSTEM [10/2018 - 10/2019] Refer to DIAGNOSIS SYSTEM [10/2019 - 07/2022]

   Result

   Result	Proceed to
   CAN communication DTCs are not output (for HV Model)	A
   CAN communication DTCs are not output (for Gasoline Model)	B
   CAN communication DTCs are output (for HV Model)	C
   CAN communication DTCs are output (for Gasoline Model)	D

Result: 

B 

See step  4

Result: 

C 

GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2018 - ] 

Result: 

D 

GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2018 - 07/2022] 

Result: 

A 

See step  2

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 [10/2018 - ] 

Result: 

A 

See step  3

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Combination Meter / Data List.
5. Read the Data List according to the display on the Techstream.

   Body Electrical > Combination Meter > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Engine RPM	Engine speed	Min.: 0 rpm, Max.: 12701 rpm or Unset	Almost the same as actual tachometer	-

   Body Electrical > Combination Meter > Data List 

   Tester Display
   Engine RPM

   OK

   Engine speed displayed on the Techstream is almost the same as the tachometer indication.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  REMOVAL [10/2018 - 07/2022] 

Result: 

NG 

REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [10/2018 - 07/2022] 

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. Refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2018 - 10/2019]  Refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2019 - 08/2021]  Refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2021 - 07/2022] 

Result: 

A 

See step  5

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Combination Meter / Data List.
5. Read the Data List according to the display on the Techstream.

   Body Electrical > Combination Meter > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Engine RPM	Engine speed	Min.: 0 rpm, Max.: 12701 rpm or Unset	Almost the same as actual tachometer	-

   Body Electrical > Combination Meter > Data List 

   Tester Display
   Engine RPM

   OK

   Engine speed displayed on the Techstream is almost the same as the tachometer indication.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE ECM. Refer to  REMOVAL [10/2018 - 07/2022] 

Result: 

NG 

REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [10/2018 - 07/2022]