FixVault

A/T Control Relay

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The control relay supplies power to the solenoid valves. As soon as the A/T control relay is ON, the battery voltage is directly supplied to solenoid valves and each solenoid valve is operated when the TCM grounds the opposite terminal. (-) Control At fail safe condition, the power is cut causing 3 gear hold.

Fig 1: A/T Control Relay And Solenoid Valve Flow Diagram
G04811218Courtesy of HYUNDAI MOTOR CO.