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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STI2 - Check STI Wire to PCM For Short



- Key OFF.

- Install Breakout Box (leave PCM disconnected).

- Measure the resistance between BOB Test Pin STI and ground.

- Is the resistance greater than 10,000 ohms?

Yes -- Go to EEC Pinpoint Test STO. STO - Self Test Output

No -- Service the PCM STI wire for short.