Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Tachometer Malfunction

Toyota Corolla Cross (2022-2025) Service Manual / Vehicle Interior / Meter / Gauge / Display / Meter / Gauge System / Tachometer Malfunction

DESCRIPTION

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

    Click here

for HEV Model
  • When replacing the hybrid vehicle control ECU, update the ECU security key.

    Click here

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

    Click here

for Gasoline Model
  • When replacing the ECM, update the ECU security key.

    Click here

  • Before replacing the ECM, refer to Registration.*1

    Click here

    • *1: w/ Smart Key System

PROCEDURE

1.

CONFIRM MODEL

(a) Choose the model to be inspected.

Result

Proceed to

for HEV Model

A

for Gasoline Model

B
B

GO TO STEP 7

A

2.

CHECK CAN COMMUNICATION SYSTEM

(a) Check if CAN communication DTCs are output.

Click here

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.

CONFIRM MODEL

(a) Choose the model to be inspected.

Result

Proceed to

for 7 Inch Type Multi-information Display

A

for 4.2 Inch Type Multi-information Display

B
B

GO TO STEP 6

A

5.

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.*
Body Electrical > Combination Meter > Data List

Tester Display

Engine RPM

OK:

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

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

6.

PERFORM ACTIVE TEST USING GTS

(a) 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

TachoMeter Operation (0rpm)

Tachometer

(0 rpm)

ON

-

TachoMeter Operation (1000rpm)

Tachometer

(1000 rpm)

ON

-

TachoMeter Operation (2000rpm)

Tachometer

(2000 rpm)

ON

-

TachoMeter Operation (3000rpm)

Tachometer

(3000 rpm)

ON

-

TachoMeter Operation (4000rpm)

Tachometer

(4000 rpm)

ON

-

TachoMeter Operation (5000rpm)

Tachometer

(5000 rpm)

ON

-

TachoMeter Operation (6000rpm)

Tachometer

(6000 rpm)

ON

-

TachoMeter Operation (7000rpm)

Tachometer

(7000 rpm)

ON

-

TachoMeter Operation (8000rpm)

Tachometer

(8000 rpm)

ON

-

HINT:

Depending on the specifications of the vehicle, some items may not be displayed.

Body Electrical > Combination Meter > Active Test

Tester Display

TachoMeter Operation (0rpm)
Body Electrical > Combination Meter > Active Test

Tester Display

TachoMeter Operation (1000rpm)
Body Electrical > Combination Meter > Active Test

Tester Display

TachoMeter Operation (2000rpm)
Body Electrical > Combination Meter > Active Test

Tester Display

TachoMeter Operation (3000rpm)
Body Electrical > Combination Meter > Active Test

Tester Display

TachoMeter Operation (4000rpm)
Body Electrical > Combination Meter > Active Test

Tester Display

TachoMeter Operation (5000rpm)
Body Electrical > Combination Meter > Active Test

Tester Display

TachoMeter Operation (6000rpm)
Body Electrical > Combination Meter > Active Test

Tester Display

TachoMeter Operation (7000rpm)
Body Electrical > Combination Meter > Active Test

Tester Display

TachoMeter Operation (8000rpm)

OK:

Tachometer indication is normal.

OK

REPLACE HYBRID VEHICLE CONTROL ECU

NG

REPLACE COMBINATION METER ASSEMBLY

7.

CHECK CAN COMMUNICATION SYSTEM

(a) Check if CAN communication DTCs are output.

Click here

Result

Proceed to

DTCs are not output

A

DTCs are output

B
B

GO TO CAN COMMUNICATION SYSTEM

A

8.

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

A

9.

CONFIRM MODEL

(a) Choose the model to be inspected.

Result

Proceed to

for 7 Inch Type Multi-information Display

A

for 4.2 Inch Type Multi-information Display

B
B

GO TO STEP 11

A

10.

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.*
Body Electrical > Combination Meter > Data List

Tester Display

Engine RPM

OK:

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

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

B

REPLACE COMBINATION METER ASSEMBLY

11.

PERFORM ACTIVE TEST USING GTS

(a) 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

TachoMeter Operation (0rpm)

Tachometer

(0 rpm)

ON

-

TachoMeter Operation (1000rpm)

Tachometer

(1000 rpm)

ON

-

TachoMeter Operation (2000rpm)

Tachometer

(2000 rpm)

ON

-

TachoMeter Operation (3000rpm)

Tachometer

(3000 rpm)

ON

-

TachoMeter Operation (4000rpm)

Tachometer

(4000 rpm)

ON

-

TachoMeter Operation (5000rpm)

Tachometer

(5000 rpm)

ON

-

TachoMeter Operation (6000rpm)

Tachometer

(6000 rpm)

ON

-

TachoMeter Operation (7000rpm)

Tachometer

(7000 rpm)

ON

-

TachoMeter Operation (8000rpm)

Tachometer

(8000 rpm)

ON

-

HINT:

Depending on the specifications of the vehicle, some items may not be displayed.

Body Electrical > Combination Meter > Active Test

Tester Display

TachoMeter Operation (0rpm)
Body Electrical > Combination Meter > Active Test

Tester Display

TachoMeter Operation (1000rpm)
Body Electrical > Combination Meter > Active Test

Tester Display

TachoMeter Operation (2000rpm)
Body Electrical > Combination Meter > Active Test

Tester Display

TachoMeter Operation (3000rpm)
Body Electrical > Combination Meter > Active Test

Tester Display

TachoMeter Operation (4000rpm)
Body Electrical > Combination Meter > Active Test

Tester Display

TachoMeter Operation (5000rpm)
Body Electrical > Combination Meter > Active Test

Tester Display

TachoMeter Operation (6000rpm)
Body Electrical > Combination Meter > Active Test

Tester Display

TachoMeter Operation (7000rpm)
Body Electrical > Combination Meter > Active Test

Tester Display

TachoMeter Operation (8000rpm)

OK:

Tachometer indication is normal.

OK

REPLACE ECM

NG

REPLACE COMBINATION METER ASSEMBLY

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