413-01-1 413-01-1Instrument Cluster
DIAGNOSIS AND TESTING
The instrument cluster carries out a display
Instrument Cluster
prove-out to verify that the warning/indicator
Refer to Wiring Diagrams Cell 60, Instrument
miniature bulbs for monitored systems are
Cluster for schematic and connector information.
functioning correctly. When the ignition switch is in
Special Tool(s)
the ON position with the engine off, the following
warning indicators prove out:
Worldwide Diagnostic System
(WDS)
• anti-lock brake (ABS) warning indicator
418-F224,
• air bag warning indicator
New Generation STAR (NGS)
Tester
• BRAKE warning indicator
418-F052, or equivalent
• charging system indicator
diagnostic tool with appropriate
adapter cables
• fail safe cooling warning indicator
Instrument Gauge System Tester
• low coolant level indicator
014-R1063 or equivalent
• low fuel warning indicator
• traction control indicator
Instrument Cluster Replacement
When it is necessary to install a new instrument
73III Automotive Meter cluster, contact the Instrument Cluster Program.
105-R0057 or equivalent
Gauge Indication Systems
Tachometer
Engine rpm information is relayed to the instrument
cluster from the powertrain control module (PCM)
over the SCP network.
Principles of Operation
Speedometer
NOTE: A new instrument cluster must be
The instrument cluster receives the vehicle speed
reconfigured. Refer to Section 418-01.
signal from the PCM over the SCP network and
The instrument cluster is a hybrid electronic cluster
displays it on the speedometer gauge. If the
(HEC). The instrument cluster uses both hardwired
instrument cluster receives no vehicle speed signal
and the standard corporate protocol (SCP)
after 1 second, the speedometer defaults to 0.0 km/h
communication network to transmit and receive
(0.0 mph).
information. As a technician it is very important to
understand:
Odometer
The instrument cluster receives an odometer
• where the input originates from.
message from the PCM and stores the mileage in
• all information necessary in order for a feature to
memory. When the instrument cluster fails to
operate.
receive the odometer message for more than 2
• which module(s) receive(s) the input or command
seconds, the odometer displays dashes.
message.
• does the module which received the input control
the output of the feature, or does it output a
message over the SCP network to another
module?
• which module controls the output of the feature.
Copyright 2002, Ford Motor Company
Last updated: 11/15/2006
2003 Mustang, 8/2002
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