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Home >> Toyota >> 2004 >> Highlander Limited, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Automatic Transmission Electronic Controlled (ECT) - U241E/U140F - Diagnostics) >> DTC P0982, P0983: Shift Solenoid "D" Control Circuit Low/High (Shift Solenoid Valve S4) >> Monitor Description

Monitor Description

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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 and illuminates the MIL and stores the DTC. And the ECM performs the fail-safe function and turns the other shift solenoid valves in good condition "ON/OFF" (In case of an open or short circuit, the ECM stops sending current to the circuit.) (see FAIL-SAFE CHART ).