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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Front Speed Sensor

Fig. 171 Front & Rear Speed Sensor Inspection.:





1. Connect oscilloscope to speed sensor connector.
2. Run vehicle at 12.4 mph and inspect speed sensor output wave, Fig. 171.
3. Ensure C is at least 0.5 volts, Fig. 171. If it is not, replace speed sensor.
4. Ensure B is 30% more of A. If it is not, replace driveshaft.