Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / Combination meter / Malfunction in speedometer
Toyota Corolla (E120): Malfunction in speedometer
Wiring diagram
Inspection procedure
1 Check combination meter assy
- Remove the combination meter assy with connector still connected.
- check voltage.
- Jack up either of the front wheels.
- Shift the shift lever to neutral.
- Turn the ignition switch to on.
- Measure the voltage between terminals c9–9 of combination meter assy and body ground when front wheel is turning slowly.
Standard voltage: voltage is generated intermittently.
Result:
Check and replace combination meter assy
2 Check obd ii scan tool or hand–held tester
- Check output value of skid control ecu.
- Connect the hand–held tester to dlc3.
- Turn the ignition switch to on and push the hand–held tester main switch on.
- Select the data list mode on the hand–held tester.
- Check that there is no difference between the speed value output
from the speed sensor displayed
by the hand–held 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
3 Inspect speedometer sensor
- Check voltage.
- Shift the shift lever to neutral.
- Jack up either of the front wheel.
- Turn the ignition switch to on.
- 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
Other materials:
Circuit description
The throttle pressure that is applied to the primary regulator
valve (which modulates the line pressure) causes the solenoid
valve slt, under electronic control, to precisely and minutely
modulate and generate the line pressure according the extent
of the accelerator pedal depressed or the o ...
Problem symptoms table
Hint:
use the table below to help determine the cause of the problem. The numbers
indicate the priority of the
likely cause of the problem. Check each part in order. If necessary, replace
these parts.
1. Headlamp and tail lamp
2. Front fog lamp system
3. Turn signal and hazard warni ...
Starting off on a steep uphill
► Automatic transmission or continuously
variable transmission
1 Make sure that the parking brake is set and shift the shift lever to D.
2 Gently depress the accelerator pedal.
3 Release the parking brake.
► Manual transmission
1 With the parking brake firmly set and the clutch pe ...