Ford Mustang (1999-2004) Service Manual: Diagnostics

Special Tool(s)

Transmission Fluid Pressure Gauge 307-004 (T57L-77820-A)
Air Test Plate, Transmission 307-246 (T92P-7006-A)
Alignment Gauge, TR Sensor 307-351 (T97L-70010-A)
Breakout Box, EEC-V Control System 418-049 (T94L-50-EEC-V) or equivalent
MLP-TR Cable 418-F107 (007-00111) or equivalent
Worldwide Diagnostic System (WDS) 418-F224 New Generation STAR (NGS) Tester 418-F052 or equivalent scan tool
Transmission Tester 307-F016 (007-00130) or equivalent
Trans Tester TR/MLP Overlay and Manual 007-00131 or equivalent
73 III Automotive Meter 105-R0057 or equivalent
UV Leak Detector Kit 164-R0756 or equivalent

Diagnosing an electronically controlled automatic transmission is simplified by using the following procedures. One of the most important things to remember is that there is a definite procedure to follow. DO NOT TAKE SHORT CUTS OR ASSUME THAT CRITICAL CHECKS OR ADJUSTMENTS HAVE ALREADY BEEN MADE. Follow the procedures as written to avoid missing critical components or steps. By following the diagnostic sequence, the technician will be able to diagnose and repair the concern the first time.

On-Board Diagnostics With Diagnostic Tool

NOTE: For detailed instruction and other diagnostic methods using the scan tool, refer to the scan tool tester manual and the Powertrain Control/Emissions Diagnosis (PC/ED) manual. These quick tests should be used to diagnose the powertrain control module (PCM) and should be carried out in order.

  • Quick Test 1.0 - Visual Inspection
  • Quick Test 2.0 - Set Up
  • Quick Test 3.0 - Key On, Engine Off (KOEO)
  • Quick Test 4.0 - Continuous Memory
  • Quick Test 5.0 - Key On, Engine Running (KOER)
  • Special Test Mode
  • Wiggle Test
  • Output Test Mode
  • PCM Reset Mode
  • Clearing DTCs
  • OBD II Drive Cycle
  • Other Scan Tool Features

For further information on other diagnostic testing features using the scan tool, refer to the Powertrain Control/Emissions Diagnosis (PC/ED) manual. Other diagnostic methods include the following:

  • Parameter Identification (PID) Access Mode
  • Freeze Frame Data Access Mode
  • Oxygen Sensor Monitor Mode
    Torque Converter Diagnosis
    Prior to the installation of a new or remanufactured torque converter, all diagnostic procedures must be followed. This is to prevent the unnecessary installation of torque converters. Only af ...

    Output State Control (OSC) Mode
    Output State Control (OSC) allows the technician to take control of certain parameters to function the transmission. For example, OSC allows the technician to shift the transmission only when ...

    Other materials:

    Contaminated Refrigerant Handling
    1. CAUTION: If contaminated refrigerant is detected, DO NOT recover the refrigerant into your recovery/recycling equipment. Recover the contaminated refrigerant using suitable recovery-only equipment designed for capturing and storing contaminated refrigeran ...

    Rear Drive Halfshafts (Description and Operation)
    The rear wheel drive halfshaft system consists of and operates as follows: Halfshafts (4K138) transmit engine torque from the rear axle housing to the rear wheels. Halfshafts rotate at approximately one-third the speed of a driveshaft and do not cont ...

    Parking, Rear and License Lamps
    Refer to Wiring Diagrams Cell 92 , Exterior for schematic and connector information. Special Tool(s) 73 III Automotive Meter or equivalent 105-R0057 Inspection and Verification 1. Verify the customer concern by operating the parking lamps ...