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

Idle/Throttle Speed Control Unit

THROTTLE POSITION SENSOR

With Throttle Closed 0.33 to 1.33 Volts
Wide Open Throttle 4.5 - 5.0 Volts

IDLE AIR CONTROL VALVE

Resistance "A" to "B" and "C" to "D" 40 to 80 ohms
Resistance "B" to "C" and "A" to "D" Infinite