Operation CHARM: Car repair manuals for everyone.
Home >> Land Rover >> 1995 >> Defender 90 (LD) V8-3.9L >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Main Relay (Computer/Fuel System) >> Description and Operation
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

OPERATION
The main relay module is energized via the engine control module (ECM) when the ignition is switched on and supplies current to the multiport fuel injection system.
pro multis · About Operation CHARM