Ford 2003 Mustang Workshop Manual page 2360

Are all the resistances greater than 10,000 ohms?
C10 CHECK THE NON-PCM INTERNAL CIRCUITS OF
SENSOR
Connect: TRS-E Cable to Transmission.
Connect: TRS-E Cable to Digital TR Sensor.
Place the Digital TR Overlay onto Transmission Tester.
Carry out Switch Test as instructed on the Digital TR
Overlay.
Does the status lamp on the tester indicate RED for
the correct gear position?
PINPOINT TEST D: ELECTRICAL PRESSURE CONTROL (EPC)
SOLENOID
NOTE: Refer to the Transmission Internal Harness illustration preceding these pinpoint tests.
NOTE: Read and record all DTCs. All digital TR Sensor and VSS DTCs must be repaired before
entering Output State Control (OSC).
D1 ELECTRONIC DIAGNOSTICS
Key in OFF position.
Select PARK.
Check to make sure the transmission harness connector
is fully seated, pins are fully engaged in the connector and
in good condition before proceeding.
Connect the diagnostic tool.
Key in ON position.
Enter the following diagnostic mode on the diagnostic tool:
Diagnostic Data Link.
Enter the following diagnostic mode on the diagnostic tool:
PCM.
Enter the following diagnostic mode on the diagnostic tool:
Active Command Modes.
Enter the following diagnostic mode on the diagnostic tool:
Output State Control (OSC).
Enter the following diagnostic mode on the diagnostic tool:
Trans-Bench Mode.
Does the vehicle enter the Trans-Bench Mode?
Test Step
Yes
Concern is not in the digital TR
sensor. For starting system
concerns, REFER to Section
303-06 . For reversing lamp
concerns, REFER to Section
417-01 . For optional circuits,
REFER to the Powertrain
Control/Emissions Diagnosis
(PC/ED) manual for diagnosis.
No
INSTALL a new digital TR
sensor. CLEAR DTCs.
REPEAT OBD Tests.
Result / Action to Take
Yes
GO to D2 .
No
REPEAT procedure to
ENTER Trans-Bench Mode. If
vehicle did not enter OSC,
REFER to the Powertrain
Control/Emissions Diagnosis
(PC/ED) manual for diagnosis
of PCM.