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:
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Toyota Tundra Service Manual > Can Communication System: 4WD Control ECU Communication Stop Mode
DESCRIPTION Detection Item Symptom Trouble Area 4WD Control ECU Communication Stop Mode Any of the following conditions are met: Communication stop for "Four Wheel Drive Control" is indicated on the "Communication Bus Check" screen of the Techstream. Communication system DTCs (DTCs that start with U ...
