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4-Terminal Relay

WARNING: This page is about a different car, the 1991 Plymouth Colt Vista, 1991 Mitsubishi Pickup, 1991 Mitsubishi Montero, 1991 Dodge Ram 50, and 1991 Dodge Colt Vista. However, it is still accessible from the selected car via links, so may be relevant.
  1. Either round or square relays may be used. Testing is same for either relay. Remove relay from holder. Using an ohmmeter, ensure continuity exists between terminals No. 2 and 4 and does not exist between terminals No. 1 and 3. See Fig 1 .
  2. Connect battery voltage to terminal No. 2, and ground terminalNo. 4. Ensure continuity exists between terminals No. 1 and 3. If continuity is not as specified, replace relay.
Fig 1: Testing 4-Terminal Relays
G91B04353Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
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