Ford 2003 Mustang Workshop Manual page 2368

(25-35 psi)
2 103-241 kPa
(15-25 psi)
3 172-241 kPa
(25-35 psi)
4 241-310 kPa
(35-45 psi)
a
EPC readings will vary due to EEC strategy. These values are approximate pressures. Actual clutch
apply pressures should be within 69-103 kPa (10-15 psi) of line pressure. For additional information on
testing, refer to the Clutch Pressure Test in this section.
3. Place the ignition switch in the OFF position. If line pressure is not within specification, check
EPC pressure.
4. Connect pressure gauge to EPC pressure tap.
5. Start engine and check EPC pressure. Use the line pressure chart for specifications.
6. If EPC pressure is not within specification,
EPC operation is OK, see the line pressure diagnosis chart for line pressure concern causes.
Line Pressure Diagnosis Chart
Test Results
High At Idle — In All
Positions
Low At Idle — In All
Positions
Low In Park Only
Low In Reverse Only
95 psi)
413-544 kPa (60- 344-482 kPa (50-
79 psi)
517-655 kPa (75- 372-579 kPa (54-
95 psi)
620-758 kPa (90- 0-34 kPa (0-5
110 psi)
· Wiring Harnesses
· Run Quick Test. Refer to the Powertrain Control/Emissions Diagnosis
(PC/ED) manual.
· EPC Solenoid
· Main Regulator Valve
· Low Fluid Level
· Control Bodies
· Leakage in Pump
· Damaged Gaskets on Separator Valve
· Damaged Separator Plate
· Restricted Inlet Filter
· Case Bolts
· Loose Main Control Valve Body
· EPC Solenoid O-Ring
· EPC Solenoid Bracket
· Case
· Sticking Main Regulator Valve
· Damaged Inlet Tube Seal on Inlet Filter
· Valve Body
· Low/Reverse Servo
· Separator Plate
· Low/Reverse Servo or Valve Bodies
85 psi)
379-517 kPa (55-75
70 psi) psi)
482-613 kPa (70-89
84 psi) psi)
586-730 kPa (85-
psi) 105 psi)
Go To Pinpoint Test E to diagnose EPC operation. If
Possible Source
psi)
0-34 kPa (0-5
psi)
379-586 kPa
(55-85 psi)
551-689 kPa
(80-100 psi)