Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Vehicle Speed Sensor: Testing and Inspection

Front Wheel Speed Sensor

INSPECTION
1) Remove the instrument panel lower cover.
2) Set the probe of oscilloscope to TCM harness connector.





3) Lift up the vehicle and raise the vehicle speed up to 20 km/h (12 MPH).
4) Check the waveform of front wheel speed sensor when vehicle speed is at 20 km/h (12 MPH).