2007 Lexus SC 430FACTORY OEM SERVICE PROCEDURE

Pattern Select Switch Snow Mode Circuit: Wiring Diagram

Fig 1: Pattern Select Switch And Passenger Side Junction Block ECU - Wiring Diagram
G05289627Courtesy of Β© TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

*: Pattern Select Switch (ECT SNOW Switch)

When the ECT SNOW switch is pushed, the switch contact is made and the ECT SNOW mode is selected.

To cancel the ECT SNOW mode, push the ECT SNOW switch again.

The ECT SNOW mode is automatically canceled when the ignition switch is turned OFF.

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.