Toyota Tacoma manuals

Toyota Corolla Repair Manual: Malfunction in speedometer

Wiring diagram

Inspection procedure

Inspection procedure

1 Check combination meter assy

  1. Remove the combination meter assy with connector still connected.
  2.  check voltage.
  1.  Jack up either of the front wheels.
  2.  Shift the shift lever to neutral.
  3.  Turn the ignition switch to on.
  4.  Measure the voltage between terminals c99 of combination meter assy and body ground when front wheel is turning slowly.

Standard voltage: voltage is generated intermittently.

Result:

Result:

Check and replace combination meter assy

Check and replace combination meter assy

2 Check obd ii scan tool or handheld tester

  1. Check output value of skid control ecu.
  1.  Connect the handheld tester to dlc3.
  2.  Turn the ignition switch to on and push the handheld tester main switch on.
  3.  Select the data list mode on the handheld tester.
  4.  Check that there is no difference between the speed value output from the speed sensor displayed by the handheld tester and the speed value displayed by the speedometer when driving the vehicle.

    Ok: there is almost no difference from the displayed speed value.

Repair or replace harness or connector

Repair or replace harness or connector

3 Inspect speedometer sensor

  1. Check voltage.
  1.  Shift the shift lever to neutral.
  2.  Jack up either of the front wheel.
  3.  Turn the ignition switch to on.
  4.  Measure voltage between terminals 3 and 2 of speed sensor when the front wheel is turning slowly.

Standard voltage: voltage is generated intermittently.

Repair or replace harness or connector

Repair or replace harness or connector

Entire combination meter does not operate
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Malfunction in tachometer
Wiring diagram Inspection procedure Check output value of ecm.  Connect the handheld tester to dlc3. Turn the ignition switch to on and push the handheld tester main switch ...

Other materials:

Circuit description
The shift solenoid valve sl is turned on and off by signals from the ecm in order to control the hydraulic pressure operation, the lockup relay valve, which then the controls operation of the lockup clutch. Fail safe function: if the ecm detects a malfunction, it turns the shift solen ...

Warning lights and indicators
The warning lights and indicators on the instrument cluster and center panel inform the driver of the status of the vehicles various systems. For the purpose of explanation, the following illustration displays all warning lights and indicators illuminated. ► Vehicles with a drive monito ...

Front passenger occupant classification system
Your vehicle is equipped with a front passenger occupant classification system. This system detects the conditions of the front passenger seat and activates or deactivates the devices for the front passenger. 1 SRS warning light 2 Seat belt reminder light 3 AIR BAG OFF indicator light 4 ...

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