Ford 2003 Mustang Workshop Manual page 2303

SECTION 307-01: Automatic Transaxle/Transmission
DIAGNOSIS AND TESTING
Diagnostic Flow Chart
Know and understand
the customer concerns
Check the fluid level
and condition
Verify the concern by
operating the vehicle
Check for non-factory-
installed items and
verify correct installation
Check the shift linkage
adjustments
Check TSBs and
OASIS messages for
vehicle concerns
Carry out quick test
both KOER and KOEO
Record all codes
1) Did you record any
diagnostic trouble codes?
2) Are any continuous test
memory codes present?
3) Did the continuous test
memory codes reappear?
4) Is the concern repaired?
5) Are there any electrical
concerns?
6) Was the transmission
concern corrected when the
scan tool was installed?
Diagnostic Flow Chart
Yes · REPAIR all hard diagnostic trouble codes. FOLLOW the
pinpoint tests. REFER to the Powertrain Control/Emissions
Diagnosis (PC/ED) manual first, then this Workshop Manual.
No · REFER to Diagnosis By Symptom
Step 5.
Yes · CLEAR codes and CARRY OUT drive cycle test.
No · GO to Step 4.
Yes · REPAIR all continuous test memory codes. FOLLOW the
pinpoint tests. REFER to the Powertrain Control/Emissions
Diagnosis (PC/ED) manual then the transmission reference
manual, then this workshop manual, then GO to Step 4.
No · GO to Step 4.
Yes · CARRY OUT the final quick test to verify that no diagnostic
trouble codes are present. CLEAR memory codes.
No · REFER to Diagnosis By Symptom
Yes · INSTALL the scan tool and CARRY OUT the output state
control test, then GO to Step 6.
No · REFER to the hydraulic and mechanical routine to diagnose
and REPAIR the concern, then GO to Step 7.
Yes · REFER to the Powertrain Control/Emissions Diagnosis
(PC/ED) manual, intermittent fault diagnosis section and use
the scan tool to diagnose cause of concern in the processor,
vehicle harness or external inputs (sensors or switches).
2003 Mustang Workshop Manual
in this section, then GO to
in this section.