2001 Lexus LS 430FACTORY OEM SERVICE PROCEDURE

Pattern Select Switch

Disconnect pattern select switch connector. See Fig 1. Check continuity between switch terminals with switch at specified positions. See PATTERN SELECT SWITCH TESTΒ  table. Replace switch if continuity is not to specification.

Fig 1: Identifying Pattern Select Switch Connector Terminals
G00032431Courtesy of Β© TOYOTA, LICENSE AGREEMENT TMS1002
PATTERN SELECT SWITCH TEST

Switch Position Terminals No. Specification
PWR 1 & 6 Continuity
NORM 1 & 3; 1 & 6 No Continuity
SNOW 1 & 3 Continuity
Factory Service Tools

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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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