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

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Vehicle Speed Sensor: Testing and Inspection

Fig. 21 Speed Sensor Terminal Identification.:





1. Remove combination meter.
2. Connect ohmmeter and check for continuity between terminals 1U and 1N, Fig. 21.
3. Ensure there is four pulses per shaft rotation, if not replace speed sensor.