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Relay Operation

  1. Apply battery voltage across terminals 2 and 4. See Fig 1.
  2. Check that there is no continuity between terminals 1 and 4.
  3. Check that there is continuity between terminals 3 and 4. If operation is not as described, replace the relay.
Fig 1: Testing Power Main Relay Operation
G00116253Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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