Ford 2003 Mustang Workshop Manual page 3570

CORRECTLY — NVM CONFIGURATION FAILURE (NO PCM ID
EXCHANGED BETWEEN INSTRUMENT CLUSTER AND PCM)
Test Step
K1 USE THE DTCS FROM
THE INSTRUMENT CLUSTER
SELF TESTS
Use the recorded results
from the Instrument
Cluster Continuous and
On-Demand Self-Tests.
Are any DTCs
recorded?
K2 CARRY OUT KEEP ALIVE
MEMORY RESET FROM PCM
Use diagnostic card for
PCM Active Command —
Keep Alive Memory
Reset.
Key in OFF position.
Key in ON position.
Leave the key in the run
position for thirty
seconds.
Key in OFF position.
Start the vehicle.
Does the vehicle start?
K3 RETRIEVE THE
INSTRUMENT CLUSTER
DTCS
Enter the following
diagnostic mode on the
diagnostic tool: Clear
Continuous DTCs.
Key in OFF position.
Key in ON position.
Key in OFF position.
Enter the following
diagnostic mode on the
diagnostic tool:
Instrument Cluster On-
Demand Self-Test.
Is DTC B2141 retrieved?
Result / Action to Take
Yes
If DTC B2141 only is retrieved, GO to
If DTC U1147 is retrieved with DTC B2141, GO to
Test C .
No
System is OK.
Yes
System is OK.
No
GO to K3 .
Yes
REPEAT K2. If the fault persists, verify the PCM calibration. If
the calibration is OK, INSTALL a new instrument cluster. for
additional information, REFER to
ignition key to run using two encoded ignition keys. GO to
Pinpoint Test J to initialize the module. REPEAT the self-test.
CLEAR the DTCs.
No
REFER to the DTC index.
K2 .
Pinpoint
Section 413-01 . Cycle the