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)

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One Touch Down Relay Inspection

ONE TOUCH DOWN RELAY INSPECTION




Perform this test when directed in the diagnostic pinpoint tests.

1. Measure resistance between terminal 2 and terminals 1, 3, 4, and 5. If resistance is 5 Ohms or less between terminal 2 and any other terminal, Replace the relay. If resistance is greater than 5 Ohms, go to step 2.
2. Use two jumper wires to connect terminals 1 and 3 directly to the positive battery terminal. Measure voltage at terminal 4. If there is no battery voltage, Replace the relay. If there is battery voltage, go to step 3.
3. Connect a third jumper wire to terminal 2 and a known good ground. Measure voltage at terminal 5. If there is no battery voltage, Replace the relay.