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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Ignition Switch: Testing and Inspection


Ignition switch "START" signal can be checked at ECU. While cranking, terminal voltage should be approximately 10V. With ignition switch "ON," voltage should be 0V. If voltage is always 0V (starter operates), check for open or short circuit in wiring from starter interlock switch (USA M/T), ignition switch (Canada M/T), or inhibitor switch (A/T) to ECU.











IGNITION SWITCH 1990-92 Protege/323