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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Checking Vehicle Speed Sensor

CHECKING VEHICLE SPEED SENSOR
1. The sensor will detect the vehicle running speed at speedometer's gear part.





2. Remove the speed sensor and measure resistance as shown on fig.
3. Turn axis of the speed sensor and check the output voltage between terminal No.2 and 1. (1 rev = 4 pulses)