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






Removal
1. Remove the 4 screws, then remove the instrument panel from the dashboard.






2. Remove the 4 screws, then pull the gauge assembly out half-way and disconnect the speedometer cable and connectors.
3. Remove the gauge assembly from the dashboard, then turn it over.




4. Break the lead off a pencil tip, then insert into speedometer connector socket and turn it. Connect an Ohmmeter between A and B (+/-) terminals. There should be continuity 4 times between the A and B terminals per revolution.