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)

Or, hide this message: temporarily or permanently

IGT Control Signal

INSPECTION USING AN OSCILLOSCOPE (REFERENCE)




IGT Control Signal
- PCM terminal
- No.1: 4S(+) - 4AF(-)
- No.2: 4W(+) - 4AF(-)
- No.3: 4AA(+) - 4AF(-)
- No.4: 4AE(+) - 4AF(-)
- No.5: 4A1(+) - 4AF(-)
- No.6: 4AM(+) - 4AF(-)

- Oscilloscope setting: 0.5 V/DIV (Y), 5 ms/DIV (X), DC range
- Vehicle condition: idle after warm up