Last Modified: 07-31-2024 6.11:8.1.0 Doc ID: RM10000000257AL
Model Year Start: 2023 Model: GR Corolla Prod Date Range: [09/2022 - 11/2022]
Title: METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM (except 12.3 Inch Display): Tachometer Malfunction; 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 11/2022]

Tachometer Malfunction

DESCRIPTION

for HV Model

  • The combination meter assembly receives engine speed signals from the hybrid vehicle control ECU via CAN communication. The combination meter assembly displays the engine speed calculated based on the data received from the hybrid vehicle control ECU.

for Gasoline Model

  • The combination meter assembly receives engine speed signals from the ECM via CAN communication. The combination meter assembly displays the engine speed calculated based on the data received from the ECM.

WIRING DIAGRAM

for HV Model
for Gasoline Model

CAUTION / NOTICE / HINT

NOTICE:

  • When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.
  • for TMC Made

    When replacing the combination meter assembly, update the ECU security key.

    Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 -        ]; SETUP: WHEN REPLACING OR REMOVING/INSTALLING PARTS: UPDATE ECU SECURITY KEY

for HV Model

  • for TMC Made:

    When replacing the hybrid vehicle control ECU, update the ECU security key.

    Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 -        ]; SETUP: WHEN REPLACING OR REMOVING/INSTALLING PARTS: UPDATE ECU SECURITY KEY

  • Before replacing the hybrid vehicle control ECU, refer to Registration.

    Click here 2023 - 2025 MY Corolla Corolla HV [09/2022 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, HV Model): REGISTRATION

for Gasoline Model

  • for TMC Made

    When replacing the ECM, update the ECU security key.

    Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 -        ]; SETUP: WHEN REPLACING OR REMOVING/INSTALLING PARTS: UPDATE ECU SECURITY KEY

  • Before replacing the ECM, refer to Registration.

    for Gasoline Model, TMMMS Made: Click here 2023 MY Corolla Corolla Hatchback GR Corolla [09/2022 - 11/2022]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function (Gasoline Model, TMMMS Made)): REGISTRATION

    for Gasoline Model, except TMMMS Made: Click here 2023 MY Corolla Corolla Hatchback GR Corolla [09/2022 - 11/2022]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function (Gasoline Model, except TMMMS Made)): REGISTRATION

PROCEDURE

1.

CONFIRM MODEL

(a) Choose the model to be inspected.

Result

Proceed to

for HV Model

A

for Gasoline Model

B
B

GO TO STEP 5

A

2.

CHECK CAN COMMUNICATION SYSTEM

(a) Check if CAN communication DTCs are output.

Click here 2023 MY Corolla Corolla HV [09/2022 - 11/2022]; NETWORKING: CAN COMMUNICATION SYSTEM (for HV Model): DIAGNOSIS SYSTEM

Result

Proceed to

DTCs are not output

A

DTCs are output

B
B

GO TO CAN COMMUNICATION SYSTEM

A

3.

CHECK FOR DTC (HYBRID CONTROL SYSTEM)

(a) Check if hybrid control system DTCs are output.

Powertrain > Hybrid Control > Trouble Codes

Result

Proceed to

DTCs are not output

A

DTCs are output

B
B

GO TO HYBRID CONTROL SYSTEM

A

4.

READ VALUE USING GTS

(a) 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.*
  • *: For the tolerance of tachometer, refer to Operation Check.

    Click here 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 11/2022]; METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM (except 12.3 Inch Display): OPERATION CHECK

Body Electrical > Combination Meter > Data List

Tester Display

Engine RPM

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
A

REPLACE HYBRID VEHICLE CONTROL ECU

B

REPLACE COMBINATION METER ASSEMBLY

5.

CHECK CAN COMMUNICATION SYSTEM

(a) Check if CAN communication DTCs are output.

for Gasoline Model TMC Made: Click here 2023 MY Corolla Corolla Hatchback GR Corolla [09/2022 - 11/2022]; NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model TMC Made): DIAGNOSIS SYSTEM

for Gasoline Model except TMC Made: Click here 2023 MY Corolla Corolla Hatchback GR Corolla [09/2022 - 11/2022]; NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model except TMC Made): DIAGNOSIS SYSTEM

Result

Proceed to

CAN communication DTCs are not output

A

CAN communication DTCs are output

B
B

GO TO CAN COMMUNICATION SYSTEM

for Gasoline Model TMC Made: Click here 2023 MY Corolla Corolla Hatchback GR Corolla [09/2022 - 11/2022]; NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model TMC Made): HOW TO PROCEED WITH TROUBLESHOOTING

for Gasoline Model except TMC Made: Click here 2023 MY Corolla Corolla Hatchback GR Corolla [09/2022 - 11/2022]; NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model except TMC Made): HOW TO PROCEED WITH TROUBLESHOOTING

A

6.

CHECK FOR DTC (SFI SYSTEM)

(a) Check if SFI system DTCs are output.

Powertrain > Engine > Trouble Codes

Result

Proceed to

DTCs are not output

A

DTCs are output

B
B

GO TO SFI SYSTEM

for M20A-FKS: Click here 2023 MY Corolla Corolla Hatchback [09/2022 - 11/2022]; M20A-FKS (ENGINE CONTROL): SFI SYSTEM: DIAGNOSTIC TROUBLE CODE CHART

for 2ZR-FAE: Click here 2023 MY Corolla [09/2022 - 11/2022]; 2ZR-FAE (ENGINE CONTROL): SFI SYSTEM: DIAGNOSTIC TROUBLE CODE CHART

A

7.

READ VALUE USING GTS

(a) 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.*
  • *: For the tolerance of tachometer, refer to Operation Check.

    Click here 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 11/2022]; METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM (except 12.3 Inch Display): OPERATION CHECK

Body Electrical > Combination Meter > Data List

Tester Display

Engine RPM

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
A

REPLACE ECM

for M20A-FKS: Click here 2023 MY Corolla Corolla Hatchback [09/2022 - 11/2022]; M20A-FKS (ENGINE CONTROL): ECM: REMOVAL

for 2ZR-FAE: Click here 2023 MY Corolla [09/2022 - 11/2022]; 2ZR-FAE (ENGINE CONTROL): ECM: REMOVAL

B

REPLACE COMBINATION METER ASSEMBLY