2001 Lexus LS 430FACTORY OEM SERVICE PROCEDURE

Starter Relay Test

Remove starter relay. See COMPONENT LOCATIONSΒ . Check for continuity between starter relay terminals No. 1 and 2. See Fig 1. Continuity should exist. If continuity does not exist, replace relay. Check for continuity between starter relay terminals No. 3 and 5. Continuity should not exist. If continuity exists, replace relay. Apply battery voltage across starter relay terminals No. 1 and 2. Check for continuity between starter relay terminals No. 3 and 5. Continuity should exist. If continuity does not exist, replace relay.

Fig 1: Identifying Starter Relay Terminals
G94I46126Courtesy of Β© TOYOTA, LICENSE AGREEMENT TMS1002
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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