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Home >> Toyota >> 2008 >> FJ Cruiser RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 143 (Automatic Transmission - A750F) >> Automatic Transmission System >> DTC P0778 Pressure Control Solenoid "B" Electrical (Shift Solenoid Valve SL2) >> Monitor Description

Monitor Description

WARNING: This page is about a different car, the 2007 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

This DTC indicates an open or short in the shift solenoid valve SL2 circuit. The ECM commands gear shifts by turning the shift solenoid valves ON/OFF. When there is an open or short circuit in any shift solenoid valve circuit, the ECM detects the problem, illuminates the MIL and stores the DTC. Also, the ECM performs the fail-safe function and turns the other normal shift solenoid valves ON/OFF. In case of an open or short circuit, the ECM stops sending current to the circuit.

While driving and shifting between 4th and 5th gears, if the ECM detects an open or short in the shift solenoid valve SL2 circuit, the ECM determines that there is a malfunction (see FAIL-SAFE CHART ).