Ford Mustang (1999-2004) Service Manual: Hydraulic System
Fluid Pump
The transmission uses a gerotor-type design front pump support and gear. The pump provides the volume of fluid needed to charge the torque converter, main control assembly, cooling system and lube system. Pump pressure is regulated by the main regulator valve. The pump has an internal boost circuit which is more efficient at lower engine speeds.
Filter
All fluid drawn from the transmission pan by the pump passes through the filter. The filter and its accompanying seal are part of the fluid path from the sump (pan) to the fluid pump.
Main Control
The main control valve body houses three electronic solenoids:
- two shift solenoids
- one torque converter clutch solenoid (TCC solenoid)
Accumulators
The transmission uses two accumulators:
- 1-2 Accumulator - The 1-2 accumulator is used to soften the 1-2 shift by absorbing some of the pressure directed to the intermediate clutch. Constant line pressure is applied to the middle section of the 1-2 accumulator piston, opposing the intermediate clutch pressure, until the pressure is high enough to overcome line pressure. The top of the piston is exhausted to the sump.
- 2-3 Accumulator - The 2-3 accumulator is used to soften the 2-3
shift by absorbing some of
the direct clutch pressure. Forward clutch pressure is applied to
the top side of the 2-3
accumulator piston, holding the piston down until clutch pressure is
high enough to overcome it.
The middle section of the piston is exhausted to the sump.
Apply Components
There are eight apply components used to drive or hold the planetary gearset components. Band-Overdrive 1. The overdrive band holds the reverse clutch drum stationary in fourth gear an ...Transmission Electronic Control System
The powertrain control module (PCM) and its input/output network control the following transmission operations: Shift timing Line pressure (shift feel) Torque converter clutch Th ...Other materials:
Brake Shift Interlock Actuator
Removal
1. Remove the shifter top control panel.
2. Disconnect the electrical connectors.
3. Remove the shifter bezel.
4. Remove the bulb from the bezel.
5. Disconnect the electrical connector.
6. CAUTION: Extra force may be needed to lift up on th ...
Assembly
1. Inspect the clutch cylinder thrust surfaces, piston bore and clutch plate
serrations for scores or
burrs. Minor scores or burrs may be removed with crocus cloth. Install a new
clutch cylinder if
badly scored or damaged.
2. Check the fluid passage in the ...
Diagnostic Trouble Code Charts
Diagnostic Trouble Code Chart
Five
Digit
DTC
Component
Description
Condition
Symptom
Action
P0102
P0103
P1100
P1101
MAF
MAF concerns
MAF system has a
malfunction which
may cause a
transmission
concern.
High or low ...