Shift Solenoid Valve: Solenoid 1, 2

WARNING: This page is about a different car, the 2005 Suzuki Reno and 2005 Suzuki Forenza. However, it is still accessible from the selected car via links, so may be relevant.

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 (6~8 bar)), solenoid 1 is OFF, line pressure will be high (232~261 psi (16~18 bar)).

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.

GEAR POSITION - SHIFT SOLENOID VALVE CONDITION

Gear	Solenoid 1	Solenoid 2
Park, Neutral	ON	ON
First	ON/OFF	ON
Second	ON/OFF	OFF
Third	ON/OFF	OFF
Fourth	ON/OFF	OFF
Reverse	ON/OFF	ON

LINE PRESSURE - RESISTANCE

	Line Pressure	Resistance
Solenoid valve 1 / Solenoid valve 2	ON (low) 89.9~98.6 psi (6.2~6.8 bar) OFF (high) 221.9~253.24 psi (15.3~17.46 bar)	26.5 +/- 0.5 ohm

Fig 1: Sectional View Of Shift Solenoid Valve

Courtesy of SUZUKI OF AMERICA CORP.