Shift Solenoid Valve: Solenoid 1,2

The shift solenoids are two identical, normally open electronic exhaust work that control upshifts and downshifts in all forward gear ranges. These shift solenoids valves together in a combination of ON and OFF sequences to control the line pressure and shift mechanisms (clutches, brakes).

Solenoid 1 controls the high or low of the line pressure (flow to each clutch valve) by the operation type (ON/OFF), i.e. solenoid 1 is ON, line pressure will be low (87-116 psi (6-8bar), solenoid 1 is OFF, line pressure will be high (232-261 psi (16-18bar)).

Solenoid 2 controls the oil flow to clutch valve E or lockup clutch valve by the ON/OFF signal.

The TCM monitors numerous inputs to determine the appropriate solenoid state combination and transaxle gear for the vehicle operating conditions.

Fig 1: Solenoid Operation Chart

Courtesy of SUZUKI OF AMERICA CORP.

Fig 2: Solenoid Line Pressure/Ohm Chart

Courtesy of SUZUKI OF AMERICA CORP.

Fig 3: Cut-Away View Of Shift Solenoid

Courtesy of SUZUKI OF AMERICA CORP.