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

Test H: The Speed Control Switch Is Inoperative

PINPOINT TEST H: THE SPEED CONTROL SWITCH IS INOPERATIVE


H1:






H1 Continued:






Normal Operation
The speed control actuator sends a signal through circuit VES10 (WH) to the speed control switches, which passes through the clockspring. The signal is sent back through the clockspring to circuit RES08 (GN/BN).

Possible Causes
- Speed control switch
- Speed control actuator