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 MANUALSTOYOTA2006SEQUOIA 4WD V8-4.7L (2UZ-FE)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTTRANSMISSION CONTROL SYSTEMSDESCRIPTION AND OPERATIONSYSTEM DESCRIPTION
2006 Toyota Sequoia 4WD V8-4.7L (2UZ-FE)
System Description
2006 Toyota Sequoia 4WD V8-4.7L (2UZ-FE)SECTION System Description
SYSTEM DIAGRAM
The configuration of the electronic control system in the A750F automatic transmission is as shown in the chart.
SYSTEM DESCRIPTION
1. SYSTEM DESCRIPTION
a. The Electronic Controlled Automatic Transmission (ECT) is an automatic transmission that electronically controls shift timing using the Engine Control Module (ECM). The ECM detects electrical signals that indicate engine and driving conditions, and controls the shift point, based on driver habits and road conditions. As a result, fuel efficiency and power transmission performance are improved. Shift shock has been reduced by controlling the engine and transmission simultaneously.
In addition, the ECT has the following features:
^ Diagnostic function.
^ Fail-safe function when a malfunction occurs.
2. OPERATION
System Diagram:
System Diagram:
The configuration of the electronic control system in the A750F automatic transmission is as shown in the chart.
SYSTEM DESCRIPTION
1. SYSTEM DESCRIPTION
a. The Electronic Controlled Automatic Transmission (ECT) is an automatic transmission that electronically controls shift timing using the Engine Control Module (ECM). The ECM detects electrical signals that indicate engine and driving conditions, and controls the shift point, based on driver habits and road conditions. As a result, fuel efficiency and power transmission performance are improved. Shift shock has been reduced by controlling the engine and transmission simultaneously.
In addition, the ECT has the following features:
^ Diagnostic function.
^ Fail-safe function when a malfunction occurs.
2. OPERATION
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.