Ford 2003 Mustang Workshop Manual page 3569

PINPOINT TEST J: THE ANTI-THEFT SYSTEM DOES NOT OPERATE
CORRECTLY — PCM ID DOES NOT MATCH BETWEEN
INSTRUMENT CLUSTER AND PCM
Test Step
J1 USE THE DTCS FROM THE
INSTRUMENT CLUSTER SELF
TESTS
Use the recorded results
from the Instrument
Cluster Continuous and
On-Demand Self-Tests.
Is DTC B2139 recorded?
J2 CLEAR PCM ID FROM
INSTRUMENT CLUSTER AND
PCM
Carry out the security
access procedure for the
instrument cluster. For
additional information,
refer to Security Access—
Procedure .
NOTE: DO NOT carry out
ignition key code erase.
Select FSF card
PARAMETER RESET
command for instrument
cluster.
Use diagnostic card for
PCM Active Command
Keep Alive Memory
Reset.
Key in OFF position.
Select FSF card
PARAMETER RESET
command for PCM.
Key in ON position.
Turn the ignition switch to
RUN for three seconds.
Enter the following
diagnostic mode on the
diagnostic tool: Clear
Continuous DTCs.
Key in OFF position.
Enter the following
diagnostic mode on the
diagnostic tool: Retrieve
Continuous DTCs.
Is DTC B2139 retrieved?
PINPOINT TEST K: THE ANTI-THEFT SYSTEM DOES NOT OPERATE
Result / Action to Take
Yes
GO to J2 .
No
System is OK.
Yes
VERIFY PCM calibration is correct for the vehicle. If correct,
REPEAT Step J2. If fault code persists, INSTALL a new
instrument cluster; for additional information, REFER to
Section 413-01 . CYCLE the ignition to RUN using two
encoded ignition keys. REPEAT
DTCs. TEST the system for normal operation. If DTC B2139
still exists, INSTALL a new PCM; for additional information,
REFER to Section 303-14
DTCs.
No
System is OK. CHECK for any other DTCs. REFER to the
instrument cluster Diagnostic Trouble Code Index.
If other DTCs are retrieved,
REFER to Instrument Cluster
Diagnostic Trouble Code (DTC)
Index.
Pinpoint Test J . CLEAR the
. REPEAT the self-test. CLEAR the