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Home >> Toyota >> 2004 >> Tundra Base, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Automatic Transmission Control System - Diagnostics) >> DTC P2769, P2770: DSL Solenoid Circuit Low/High Input (2UZ-FE Only) >> Circuit Description
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Circuit Description

WARNING: This page is about a different variant/trim than selected.

The shift solenoid valve SL is turned ON and OFF by signals from the ECM to control the hydraulic pressure acting on the lock-up relay valve, which then controls operation of the lock-up clutch.

Fig 1: DTC P2769 & P2770 Detection Condition & Trouble Area Chart
G02929578Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fail-safe function

If the ECM detects a malfunction, it turns the shift solenoid valve SL OFF.