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Micro ISO Relay

  1. Remove relay to be tested from relay module. Check relay continuity. Continuity should exist between relay terminals No. 1 and 2, and between relay terminals No. 3 and 4. See Fig 1 . Continuity should not exist between relay terminals No. 3 and 5. If continuity is as specified, go to next step. If continuity is not as specified, replace relay.
  2. Using a jumper wire, apply battery voltage to relay terminal No. 1. Using a second jumper wire, ground relay terminal No. 2. Continuity should now exist between relay terminals No. 3 and 5. If continuity is not as specified, replace relay. If continuity is as specified, relay is okay at this time.
Fig 1: Identifying Micro Relay Terminals
G98H01461Courtesy of FORD MOTOR CO.
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