Tachometer Malfunction [04/2020 - 09/2022]: Procedure

WARNING: This page is about a different car, the 2022 Toyota Corolla, 2021 Toyota Corolla, and 2020 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.

CHECK CAN COMMUNICATION SYSTEM

Check if CAN communication DTCs are output.

Refer to DIAGNOSIS SYSTEM [04/2020 - 09/2022]

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 [01/2019 - 09/2022]

Result:

A

See step 2

CHECK FOR DTC (HYBRID CONTROL SYSTEM)

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

for Nickel Metal Hydride Battery: Refer to DIAGNOSTIC TROUBLE CODE CHART [04/2020 - 09/2022]

for Lithium-ion Battery: Refer to DIAGNOSTIC TROUBLE CODE CHART [04/2020 - 09/2022]

Result:

A

See step 3

PERFORM ACTIVE TEST USING TECHSTREAM

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Turn the Techstream on.
Enter the following menus: Body Electrical / Combination Meter / Active Test.

Perform the Active Test according to the display on the Techstream.

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	-

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)

OK

Tachometer indication is normal.

Result

Proceed to
OK
NG

Result:

OK

REPLACE HYBRID VEHICLE CONTROL ECU

Refer to REMOVAL [04/2020 - 09/2022]

Result:

NG

REPLACE COMBINATION METER ASSEMBLY

Refer to REMOVAL [03/2019 - 09/2022]