Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / Sfi system / Vehicle speed sensor ”a” / Inspection procedure
Toyota Corolla (E120): Inspection procedure
Hint
: read freeze frame data using the hand-held tester or the obd ii scan tool. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, it is useful for determining whether the vehicle was running or stopped, the engine was warmed up or not, the air–fuel ratio was lean or rich, etc. At the time of the malfunction.
1 Check operation of speedometer
- Drive the vehicle and check if the operation of the speedometer in the combination meter is normal.
Hint
: the vehicle speed sensor is operating normally if the speedometer display is normal.
2 Inspect ecm(spd voltage)
- Shift the lever to the neutral position.
- jack up the vehicle.
- turn the ignition switch on.
- check the voltage between the terminals of the e4 and e5 ecm connectors as the wheel is turned slowly.
Standard:
Hint
: the output voltage should fluctuate up and down similarly to the diagram on the left when the wheel is turned slowly.
Replace ecm
Other materials:
Inspection procedure
1 Check p squib circuit(airbag sensor assy center – instrument
panel passenger airbag assy)
Disconnect the negative (–) terminal cable from the battery,
and wait at least for 90 seconds.
disconnect the connectors between the airbag sensor
assy center and the instrument panel ...
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Malfunction in tachometer
Wiring diagram
Inspection procedure
Check output value of ecm.
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.
2 Inspect combinatio ...