[0000208] Ford Training 2001 Powertrain Control/Emissions Diagnosis, OBD II

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Nothing Is Impossible
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Preface
This manual provides a step-by-step approach for diagnosing drivability, emission and powertrain
control system symptoms. Before beginning diagnosis, it may be helpful to reference any
Technical Service Bulletins (TSBs) or On-line Automotive Service Information System (OASIS)
information when this is available.
Note: For Villager and 7.3L diesel, go to the VILLAGER or 7.3L DIESEL tab in this manual.
This manual is used in conjunction with the Body, Chassis, Electrical, Powertrain Workshop
Manuals and the Wiring Diagram Manuals. The Workshop Manuals are used to provide additional
diagnostics when directed by this manual. The Workshop Manuals are also used for component
removal and replacement information. Refer to the Wiring Diagram Manuals for vehicle specific
wiring information and component, connector and splice location.
The following is a description of the information contained in each section of this manual.
Section 1: Description And Operation
This section contains description and operation information on powertrain control systems and
components. This section is designed to give the technician a general knowledge of the powertrain
control system. It should be used when general information about the powertrain control system is
desired, and is rarely referenced from other sections of the manual.
Section 2: Diagnostic Methods
The Diagnostic Methods section contains information on specific diagnostic tasks that are used
during diagnosis. Descriptions of specific diagnostic methods are included, as well as detailed
instructions on how to access or perform the tasks. This section provides the technician with
step-by-step instructions for performing routine diagnostic tasks.
Section 3: Symptom Charts
All diagnosis begins in Section 3 with Step 1: PCM Quick Test. If the PCM Quick Test is
completed and no DTCs are received, the technician may be directed to Step 2: No DTCs Present
Symptom Chart Index (refer to Section 3 for details). The No DTCs Present Symptom Chart Index
contains the list of symptoms addressed in this manual, and will send the technician to the
appropriate Step 3: No DTCs Present Symptom Chart. If no PCM DTCs are present and the
vehicle symptom is not listed in the Step 2: No DTCs Present Symptom Chart Index, the
technician should go the appropriate Workshop Manual to continue diagnosis.
Section 4: Powertrain DTC Charts and Description
Section 4 contains the Powertrain Diagnostic Trouble Code (DTC) ‘‘Go To’’ Charts. These charts
will be referenced if a DTC is received in Section 3. Also included in this section are the
Powertrain DTC descriptions and list of possible causes.
Section 5: Pinpoint Tests
All pinpoint tests are included in Section 5. Never enter a Pinpoint Test unless directed there.
When directed to a Pinpoint Test, always read the information and look at the schematic included
at the beginning of the Pinpoint Test.
Section 6: Reference Values
Section 6 contains the ‘‘Typical Diagnostic Reference Values’’ charts. The technician will be
directed to these charts from Pinpoint Test Z in Section 5.








 

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