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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Component Inspection

MFI RELAY (ASD RELAY) AND FUEL PUMP RELAY CHECK
1. Remove the relay.




2. Check that there is continuity between (4) and (6) terminals.
Standard value: 35-75 Ohms







3. Use jumper leads to connect relay terminal No 6 to the battery (+) terminal and terminal No 4 to the battery (-) terminal.
Check the continuity between relay terminal No 2-8 while connecting and disconnecting the jumper lead at the battery (-) terminal.
4. If there is a defect replace the MFI (ASD) relay or fuel pump relay.