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Horn Relay

  1. Ensure ignition is off. Remove horn relay. Horn relay is located in fuse/relay box at driver's side of instrument panel. See Figure and Fig 1 .
  2. Note identification of electrical terminals on horn relay. See Fig 2. Using ohmmeter, check that no continuity exists between terminals No. 3 and 5 on horn relay. Check that continuity exists between terminals No. 1 and 2 on horn relay.
  3. Using jumper wires, apply battery voltage and ground to terminals No. 1 and 2 on horn relay. Check that continuity now exists between terminals No. 3 and 5 on horn relay. See Fig 2. Replace horn relay if defective.
    Fig 1: Locating Various Relays
    G00025350Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 2: Identifying Electrical Terminals On Horn Relay Or Power Relay
    G00025346Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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