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On-Vehicle Inspection

WARNING: This page is about a different car, the 2008 Lexus IS 350. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECT COOLING FAN RELAY 
    1. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      STANDARD RESISTANCE

      Tester Connection Specified Condition
      3-5 10 MΩ or higher
      3-5 Below 1 Ω (when battery voltage is applied to terminals 1 and 2)
      Fig 1: Inspecting Cooling Fan Relay
      G04942983Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Measure the resistance according to the value(s) in the table below.

  2. INSPECT NO. 2 COOLING FAN RELAY 
    1. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      STANDARD RESISTANCE

      Tester Connection Specified Condition
      3-4 Below 1 Ω
      3-5 10 MΩ or higher
      3-5 Below 1 Ω (when battery voltage is applied to terminals 1 and 2)

      If the result is not as specified, replace the No.2 cooling fan relay.

      Fig 2: Inspecting No. 2 Cooling Fan Relay
      G04829212Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. INSPECT NO. 3 COOLING FAN RELAY 
    1. Inspect the resistance of the relay.

      Standard resistance 

      STANDARD RESISTANCE

      Tester Connection Specified Condition
      3-5 10 MΩ or higher
      3-5 Below 1 Ω (when battery voltage is applied to terminals 1 and 2)

      If the result is not as specified, replace the No.3 cooling fan relay.

      Fig 3: Inspecting No. 3 Cooling Fan Relay
      G04942983Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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