Workshop

FORD 5R110W TorqShift

The coast (SSPC-A), and direct (SSPC-D) clutch
packs are each controlled by an inversely
proportional three port solenoid. The pressure output
is inversely proportional to the applied DC current
supplied through an electronically controlled driver.
The current is varied between 0 amp and 1 amp from
the PCM, and 0 amp equals maximum pressure in the
particular clutch oil circuit. The Shift Solenoid
controls the apply and release rates of the particular
clutch pack. Refer to Figure 8.
The Solenoid Body Assembly is bolted to the
transmission case inside the bottom pan and looks
similar to what we have previously referred to as a
valve body. The Solenoid Body Assembly contains
the following:
Seven Variable Force Solenoids
Five Normally Closed Pressure Switches
Transmission Fluid Temperature Sensor
Manual Shift Valve
Over-Pressurization Relief Ball
There is a solenoid and a pressure switch dedicated to
the function of each clutch pack, except the forward
clutch, as it is controlled by the manual valve. There
are no other valves in the solenoid body except for the
pressure relief ball and spring. All shifts are
controlled by five solenoids. Line pressure and the
torque converter clutch each have their own solenoid.
Four of the solenoids, TCC, OD Clutch, Intermediate
Clutch and the Low/Reverse Clutch, are directly
proportional which means the pressure output is
directly proportional to the applied DC amps. The
current is varied between 0 and 1 amp from the PCM,
and 1 amp equals maximum pressure in the oil
circuit. Three of the solenoids, Line Pressure, Coast
Clutch and Direct Clutch, are inversely proportional
which means the pressure output is inversely
proportional to the applied DC amps. The current is
varied between 0 and 1 amp from the PCM, and 0 amp
equals maximum pressure in the oil circuit.
The different design solenoids are keyed differently
to prevent mis-assembly in the solenoid body and all
are retained with a large "E" clip. The "Natural"
colored wire connectors connect to the solenoids.
The "Black" colored connectors connect to the
pressure switches. There are separate connectors for
the TFT sensor and for the TR-P sensor. All of the
solenoids except the line pressure solenoid can be
serviced without removing the solenoid body from
the case. Refer to Figure 6 for location and
identification of the solenoids and switches on the
solenoid body. Refer to Figure 8 for the differences
and how to identify between the direct and inversely
proportional solenoids.
ELECTRICAL COMPONENT
DESCRIPTION AND OPERATION (Cont'd)
Transmission Solenoid Body Assembly
Line Pressure Control Solenoid (PC-A)
Torque Converter Clutch (TCC) Solenoid
Shift Solenoid Pressure Control Solenoids
(SSPC-B, SSPC-C, SSPC-E)
Shift Solenoid Pressure Control Solenoids
(SSPC-A, SSPC-D)
The Line Pressure Control Solenoid (PC-A) is an
inversley proportional three port solenoid. The
pressure output is inversely proportional to the
applied DC current supplied through an electronically
controlled driver. The current is varied between 0
amp and 1 amp from the PCM, and 0 amp equals
maximum pressure in the oil circuit. The PC-A
Solenoid controls the line pressure oil circuits (See
Figure 8)
The Torque Converter Clutch (TCC) Solenoid is a
directly proportional three port solenoid. The
pressure output is directly proportional to the applied
DC current supplied through an electronically
controlled driver. The current is varied between 0
amp and 1 amp from the PCM, and 1 amp equals
maximum pressure in the oil circuit. The TCC
Solenoid controls the apply and release rates of the
converter clutch (See Figure 8).
The overdrive (SSPC-B), intermediate (SSPC-C),
and low/reverse (SSPC-E) clutches are each
controlled by a directly proportional three port
solenoid. The pressure output is directly proportional
to the applied DC current supplied through an
electronically controlled driver. The current is varied
between 0 amp and 1 amp from the PCM, and 1 amp
equals maximum pressure in the particular clutch oil
circuit. The Shift Solenoid controls the apply and
release rates of the particular clutch pack (See Figure
8).
AUTOMATIC TRANSMISSION SERVICE GROUP
Technical Service Information
10
Copyright © 2004 ATSG

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