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 Validation Switch

The Idle Validation Switch (IVS) provides the Powertrain Control Module (PCM) with a redundant signal to verify when the accelerator pedal and shaft is in the idle position. Any detected malfunction of the IVS will illuminate the CHECK ENGINE light and the engine will operate at low idle only.