Toyota Tundra Service Manual: System Description

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 is 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.
    Road Test

    System Diagram

    See More:

    Toyota Tundra Service Manual > Touch Select 2-4 And High-low System: Transfer Shift Motor Limit Switch Circuit (P17AC)
    DESCRIPTION This DTC is detected when a malfunction is detected in the limit switch circuit, which detects the position of the transfer shift motor. DTC Code DTC Detection Condition Diagnosis Condition Malfunction Status Malfunction Time Other Trouble Area P17AC When the ignition switch is ON, the e ...

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    Toyota Tundra Service Manual

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