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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Micro ISO Relay

RELAY MICRO ISO







Use 73III Automotive Meter to check for continuity between terminal 2 and all other terminals. If resistance is 5 ohms or less between terminal 2 and any other terminal, install a new relay. If resistance is greater than 5 ohms, continue with the test. Use 73III Automotive Meter set in the volts position to check for voltage at terminal 4. If battery voltage is not indicated, install a new relay. If battery voltage is indicated, connect a third jumper wire to terminal 2 and ground the jumper wire to a known good ground. Check for voltage at terminal 5. If battery voltage is not indicated, install a new relay.