Ford 2003 Mustang Workshop Manual page 3564

G5 CHECK THE ENCODED IGNITION
KEYS FOR CORRECT OPERATION
Key in OFF position.
Key in ON position.
Start the vehicle using the first
encoded ignition key.
Key in ON position.
Start the vehicle with the second
ignition key.
Key in OFF position.
Does the vehicle start correctly
using both encoded ignition
keys?
G6 RETRIEVE THE INSTRUMENT
CLUSTER DTCS — CHECK FOR DTC
B1601
Retrieve and document
continuous DTCs.
Enter the following diagnostic
mode on the diagnostic tool:
Clear Continuous DTCs.
Carry out a instrument cluster
self-test using both ignition keys
from Step G5.
Is DTC B1601 retrieved?
PINPOINT TEST H: THE ANTI-THEFT SYSTEM DOES NOT OPERATE
CORRECTLY — PATS RECEIVED INVALID FORMAT OF KEY-CODE
FROM IGNITION KEY TRANSPONDER (PARTIAL KEY READ)
Test Step
NOTE: Large metallic objects, electronic debit transponder devices or a second key on the same
key ring as the PATS ignition key may cause vehicle starting problems and record DTCs under
certain conditions. If a fault cannot be identified, examine the customer's key for such objects or
devices. If present, inform the customer that they need to keep these objects from touching the
PATS ignition key while starting the engine. These objects and devices cannot damage the
PATS ignition key, but can cause a momentary problem if they are too close to the key during
engine start. If a problem occurs, turn ignition OFF and restart the engine with all other objects
on the key ring held away from the ignition key. Check to ensure the encoded ignition key used
by the customer is an approved Ford encoded ignition key (encoded ignition keys from Rotunda,
Ilco, Curtis, or Strattec are approved Ford encoded ignition keys).
H1 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 B1602 retrieved?
Key Programming to enable the PID SPARE KEY to
ENABLE. TEST the system for normal operation.
Once completed, GO to
Yes
System is OK. If there are additional keys that need to
be programmed, for additional information, REFER to
Key Programming—Program a Key Using Two
Programmed Keys .
No
GO to G6 .
Yes
INSTALL a new instrument cluster; for additional
information, REFER to
ignition to RUN using two encoded ignition keys. GO
to Pinpoint Test J to initialize the vehicle. REPEAT the
self-test. CLEAR the DTCs.
No
System is OK.
If other DTCs are retrieved, REFER to Instrument
Cluster Module Diagnostic Trouble Code (DTC) Index.
Result / Action to Take
Yes
GO to H2 .
No
System is OK. CHECK all customer encoded
ignition keys with Instrument Cluster On-Demand
Self-Test to verify all other keys are programmed.
G5 .
Section 413-01 . CYCLE the