Valve Body Solenoids
The valve body assembly contains 6 solenoid valves. See Fig 1
. 3 Pulse Width Modulation (PWM) valves, 2 shift solenoid valves (on/off) and one main regulating valve (variable force solenoid). PWM solenoid valves (SSC, SSD and SSE) regulate pressure to brakes and clutches. Shift solenoid valves (SSA and SSB) switch different passages in valve body to direct pressure to individual brakes and clutches. Pressure Control Solenoid (PCA) ensures that sufficient hydraulic pressure is available in all operating conditions. See VALVE BODY SOLENOID OPERATION
table.
Courtesy of FORD MOTOR CO. VALVE BODY SOLENOID OPERATION
| Gearshift Lever Position |
SSA |
SSB |
SSC |
SSD |
SSE |
| "P" Or "N" |
On |
Off |
Off |
Off |
Off |
| "R" |
Off |
Off |
Off |
Off |
Off |
| "D" |
| "1" |
Off |
Off |
Off |
On |
On |
| "1" (Manual) |
On |
On |
Off |
Off |
On |
| "2" |
Off |
Off |
Off |
Off |
On |
| "3" |
Off |
Off |
Off |
Off |
Off |
| "4" |
On |
Off |
On |
Off |
Off |
| "D" |
| "3" |
Off |
Off |
On |
Off |
Off |
| "4" |
On |
On |
On |
Off |
On |