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

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Auto Shutdown (ASD) Sense

PURPOSE
A 12 volt signal at this input indicates that the Automatic Shutdown (ASD) relay has been activated.

OPERATION
This input is used only to sense that the ASD relay is energized. If the Powertrain Control Module (PCM) does not see 12 volts when the ASD relay should be activated, it will set a Diagnostic Trouble code.