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




INSPECT OUTPUT SIGNAL OF VEHICLE SPEED
a. Check for standard signal.
1. While driving the vehicle at the speed of 10 km/h, check the voltage between the terminals C7-33 of the combination meter assy and body ground.

Standard: Fluctuation between 10 to 14 V or less is repeated 7 times within 1 sec.

NOTE: Check it with the ignition switch ON and the connector connected.