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 > Meter / Gauge System: Lost Communication with Brake System Control Module (U0129)
DESCRIPTION The combination meter communicates with the skid control ECU via the CAN line. DTC Code DTC Detection Condition Trouble Area U0129 When either of following conditions is detected: 15 seconds have elapsed since engine started and IG voltage 10.5 V or more No communication with skid contro ...
