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Micro Relays

  1. Remove relay to be tested. Check continuity between relay terminals. Continuity should exist between terminals No. 1 and 2, and between terminals No. 3 and 4. Continuity should not exist between terminals No. 3 and 5. See Figure. If continuity exists as specified, go to next step.
  2. Connect jumper wire between battery positive terminal and relay terminal No. 1. Connect second jumper wire between relay terminal No. 2 and negative battery terminal. Continuity should now exist between terminals No. 3 and 5. If continuity exists as specified, relay is okay at this time. If continuity does not exist as specified, replace relay.
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