Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSTOYOTA2007HIGHLANDER 2WD V6-3.3L (3MZ-FE)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTTRANSMISSION CONTROL SYSTEMSTESTING AND INSPECTIONCOMPONENT TESTS AND GENERAL DIAGNOSTICSPATTERN SELECT SWITCH CIRCUIT
2007 Toyota Highlander 2WD V6-3.3L (3MZ-FE)
Pattern Select Switch Circuit
2007 Toyota Highlander 2WD V6-3.3L (3MZ-FE)SECTION Pattern Select Switch Circuit
Pattern Select Switch Circuit
DESCRIPTION
Multiplex network body ECU receives pattern select switch information, and sends it through the multiplex communication system to the ECM.
ECT SNOW is the system that operates the throttle motor to control engine output to reduce skidding of the driving wheels, guarantee takeoff acceleration, driving straightness and turning stability.
INSPECTION PROCEDURE
DESCRIPTION
Multiplex network body ECU receives pattern select switch information, and sends it through the multiplex communication system to the ECM.
ECT SNOW is the system that operates the throttle motor to control engine output to reduce skidding of the driving wheels, guarantee takeoff acceleration, driving straightness and turning stability.
WIRING DIAGRAM:
INSPECTION PROCEDURE
Step 1(Part 1):
Step 1(Part 2)-4(Part 1):
Step 4(Part 2):
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.