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Lexus LS430

  1. Disconnect the solenoid connector. Using an ohmmeter, measure the resistance between terminals No. 3 and 4. See Fig 1. Resistance should be 12-17 ohms. If resistance value is not as specified, replace the solenoid. See KEY INTERLOCK SOLENOID  under REMOVAL & INSTALLATION.
  2. Momentarily supply battery positive voltage and ground at terminals. See Fig 2. Ensure an operating noise can be heard from the solenoid. If the solenoid does not operated, replace the solenoid. See KEY INTERLOCK SOLENOID  under REMOVAL & INSTALLATION.
Fig 1: Measuring Resistance Of Key Interlock Solenoid (Lexus LS430)
G00139878Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 2: Testing Operation Of Key Interlock Solenoid (Lexus LS430)
G00139879Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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