2002 Lexus ES 300FACTORY OEM SERVICE PROCEDURE

Commutator End Frame Assembly Test

WARNING: This page is about a different car, the 2004 Toyota Camry. However, it is still accessible from the selected car via links, so may be relevant.
  1. Using vernier calipers, measure the brush length. See Fig 1. Verify length is within specification. See STARTER SPECIFICATIONSΒ . If the length is less than minimum, replace the starter commutator end frame assembly.
  2. Using an ohmmeter, measure resistance between the positive and negative brush holders. See Fig 2. Verify resistance is within specification. See STARTER SPECIFICATIONSΒ . If resistance is not within specification, repair or replace the starter commutator end frame assembly.
Fig 1: Measuring Brush Length
G00297844Courtesy 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.