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Fuel Pump Relay

  1. Remove fuel pump relay. Check resistance between relay terminals No. 2 and 4. See Fig 1. Resistance should be about 70 ohms.
  2. Connect jumper wire between battery positive terminal and relay terminal No. 4. Connect second jumper wire between battery negative terminal and fuel pump relay terminal No. 2.
  3. With relay energized, continuity should exist between terminals No. 1 and 3. With power source removed, continuity should not exist between terminals No. 1 and 3. If relay does not test as specified, replace fuel pump relay.
Fig 1: Identifying Fuel Pump Relay & MFI Relay Terminals
G96A09835Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.