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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Secondary Speed Sensor Inspection

Secondary Speed Sensor

INSPECTION
1) Remove the instrument panel lower cover.
2) Set the probe of oscilloscope to TCM harness connector.





3) Start and warm up the engine.
4) Check the waveform of secondary speed sensor with engine idling.