Ford 2003 Mustang Workshop Manual page 2347

NOTE: Refer to the Transmission Vehicle Harness Connector illustration preceding these
pinpoint tests.
A1 ELECTRONIC DIAGNOSTICS
Select PARK.
Key in OFF position.
Check to make sure the transmission harness connector
is fully seated, pins are fully engaged in 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 vehicle enter Trans-Bench Mode?
A2 WIGGLE TEST
Select PIDs to be monitored.
PID Command PID Actual
SSA
SSB
TCC
Select "ON" to turn suspect solenoid on.
Press "SEND".
Wiggle all wiring and connectors to the transmission.
Monitor the Solenoid State for changes.
Select "OFF" to turn solenoid off.
Press "SEND".
Does the suspect solenoid(s) fault state change?
A3 SOLENOID FUNCTIONAL CHECK
Monitor each solenoid state.
Turn each solenoid ON and OFF.
Does the solenoid turn ON and OFF when
commanded and can solenoid activation be heard?
A4 OSC TRANS-DRIVE MODE (GR_CM OR TCC)
Carry out OSC Trans-Drive Mode.
Select GR_CM for Shift Solenoids or follow procedures
for GR_CM as listed.
Select TCC for Torque Converter Clutch Solenoid.
Follow procedures of TCC in Drive Mode as listed.
Does the transmission upshift and downshift or
torque converter engage/disengage when
commanded?
A5 CHECK FOR BATTERY VOLTAGE
Remove transmission fluid pan.
SS1F
SS2F
TCCF
Yes
GO to A2 .
No
REPEAT procedure to enter
Trans-Bench Mode. If vehicle
did not enter Trans-Bench
Mode, REFER to the Powertrain
Control/Emissions Diagnosis
(PC/ED) manual for diagnosis
of PCM.
Yes
REPAIR open or short in the
vehicle harness or connector.
No
GO to A3 .
Yes
GO to A4 .
No
GO to A5 .
Yes
CLEAR all DTCs. ROAD TEST
to verify if concern is still
present. If concern is still
present, REFER to Diagnosis
By Symptom in this section to
diagnose shift or torque
converter concern.
No
GO to A5 .
Yes