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Horn System: Inspection

  1. INSPECT RELAY (HORN)
    1. Remove the HORN relay from the engine room R/B.
    2. Check the HORN relay resistance.

    Standard: 

    TESTER CONNECTION SPECIFIED CONDITION

    Tester Connection Specified Condition
    3 - 5 1 kΩ or higher
    3 - 5 Below 1 Ω (when battery voltage is applied to terminals 1 and 2)
    Fig 1: Checking Horn Relay Resistance
    G02595292Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If the result is not as specified, replace the relay.