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

PCM Service Precautions

The control module is designed to withstand normal current draws associated with vehicle operations. Avoid overloading any circuit. When testing for the opens or the shorts, do not ground or apply voltage to any of the control module circuits unless instructed to do so. These circuits should only be tested using a digital voltmeter J 39200. The control module connectors should remain connected to the control module while testing.