Ford 2003 Mustang Workshop Manual page 3300

U2 DETERMINE IF INSTRUMENT
CLUSTER IS AT FAULT
Connect the diagnostic tool.
Key in ON position.
Enter the following diagnostic mode
on the diagnostic tool: Instrument
Cluster Active Command.
Trigger the instrument cluster active
command TRAC OFF.
Did the traction control indicator
illuminate?
U3 CHECK FOR CORRECT
INSTRUMENT CLUSTER OPERATION
Disconnect all instrument cluster
connectors.
Check for:
corrosion
pushed-out pins
Connect all instrument cluster
connectors and make sure they seat
correctly.
Operate the system and verify the
concern is still present.
Is the concern still present?
PINPOINT TEST V: THE INSTRUMENT CLUSTER IS INOPERATIVE
V1 CHECK THE BATTERY POWER SUPPLY TO THE
INSTRUMENT CLUSTER
CAUTION: Use the correct probe adapter(s) when
making measurements. Failure to use the correct probe
adapter(s) may damage the connector.
Key in OFF position.
Disconnect: Instrument Cluster C220b.
Measure voltage between the instrument cluster C220b pin
10, circuit 729 (RD/WH), harness side and ground.
Is the voltage greater than 10 volts?
V2 CHECK THE RUN POWER SUPPLY TO THE INSTRUMENT
CLUSTER
Key in ON position.
Measure the voltage between the instrument cluster C220b
pin 11, circuit 489 (PK/BK), harness side and ground.
GO to
Yes
REFER to
No
GO to
Yes
INSTALL a new instrument cluster. REFER to
Instrument Cluster
system for normal operation.
No
The system is operating correctly at this time.
Concern may have been caused by a loose or
corroded connector. CLEAR the DTCs. REPEAT
the self-test.
Test Step
U2 .
Section 206-09B .
U3 .
in this section. TEST the
Result / Action to Take
Yes
GO to V2
No
REPAIR the circuit. TEST
the system for normal
operation.
Yes
GO to V3
.
.