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

Main Relay (Computer/Fuel System): Description and Operation

PURPOSE
With ignition ON, provides power to PCME and various control devices.

LOCATION
Relay panel, right rear corner of engine compartment.

OPERATION
Relay normally OFF. Turning ignition switch ON activates relay to supply power to PCME and control devices.