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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Speed Control Input

PURPOSE
This input informs Powertrain Control Module (PCM) of speed control status


OPERATION
The speed control system provides three different input signals to the PCM; ON/OFF, SET, and RESUME.

The input, ON/OFF, indicates to the PCM that the speed control system has been activated or deactivated by the driver.

The input, SET, indicates to the PCM that a specific vehicle speed has been selected by the driver.

The input, RESUME, indicates to the PCM that the previously SET speed has been requested by the driver.