2003 FORD MUSTANG Workshop Manual

service schedule instrument cluster airbag disable reset child seat oil additives

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Page 3257 of 4378

FORD MUSTANG 2003 Workshop Manual PINPOINT TEST E: A SINGLE ILLUMINATION SOURCE IS
INOPERATIVE
Test Step Result / Action to Take
E1 CHECK VOLTAGE TO THE SINGLE
ILLUMINATION SOURCE �z
Disconnect: Inoperative Illumination Source.

Page 3258 of 4378

FORD MUSTANG 2003 Workshop Manual REMOVAL AND INSTALLATION
Instrument Cluster Bulb
Removal and Installation
1. Remove the instrument cluster. For additional information, refer to Section 413 - 01 .
2. Remove the necessary instru

Page 3259 of 4378

FORD MUSTANG 2003 Workshop Manual DESCRIPTION AND OPERATION
Instrument Cluster
The instrument cluster (10849) consists of the following components:
Instrument Cluster—
Base 3.8L Engine
SECTION 413-
01: Instrument Cluster 2003 M

Page 3260 of 4378

FORD MUSTANG 2003 Workshop Manual Instrument Cluster—
Base 4.6L Engine transmission)
16 — LOW FUEL level indicator
17 — SERVICE ENGINE SOON indicator
18 — THEFT indicator
19 — AIR BAG warning indicator
20 — Char

Page 3261 of 4378

FORD MUSTANG 2003 Workshop Manual Instrument Cluster—
Cobra 14 — Traction control indicator
15 — Overdrive off (O/D OFF) indicator (automatic
transmission)
16 — LOW FUEL level indicator
17 — SERVICE ENGINE SOON indic

Page 3262 of 4378

FORD MUSTANG 2003 Workshop Manual 13 — ABS warning indicator
14 — Traction control indicator
15 — Overdrive off (O/D OFF) indicator (automatic
transmission)
16 — LOW FUEL level indicator
17 — SERVICE ENGINE SOON in

Page 3263 of 4378

FORD MUSTANG 2003 Workshop Manual DIAGNOSIS AND TESTING
Instrument Cluster
Refer to Wiring Diagrams Cell
60 , Instrument Cluster for schematic and connector information.
Principles of Operation
NOTE: A new instrument cluster mu

Page 3264 of 4378

FORD MUSTANG 2003 Workshop Manual �z
air bag warning indicator
�z BRAKE warning indicator
�z charging system indicator
�z fail safe cooling warning indicator
�z low coolant level indicator
�z low fuel warning indicator
�z tracti

z
air bag warning indicator
z BRAKE warning indicator
z charging system indicator
z fail safe cooling warning indicator
z low coolant level indicator
z low fuel warning indicator
z traction control indicator
Instrument Cluster Replacement
When it is necessary to install a new instrument cluster, contact the Instrument Cluster Program.
Gauge Indication Systems
Tachometer
Engine rpm information is relayed to the instrument cluster from the powertrain control module (PCM)
over the standard corporate protocol (SCP) network.
Speedometer
The instrument cluster receives the vehicle speed signal from the PCM over the SCP network and
displays it on the speedometer gauge. If the instrument cluster receives no vehicle speed signal after
one second, the speedometer defaults to 0.0 km/h (0.0 mph).
Odometer
The instrument cluster receives an odometer message from the PCM and stores the mileage in
memory. When the instrument cluster fails to receive the odometer message for more than two
seconds, the odometer will display dashes.
Fuel Gauge
The fuel sender is hardwired to the fuel gauge. When the instrument cluster fails to receive the fuel
level signal for more than 33 seconds, the fuel level gauge will move below E (empty). If the fuel level
signal operates correctly for more than 33 seconds, the fuel gauge will return to the correct position.
Fuel fills of less than 9.5 liters (2.5 gallons) require at least 10 minutes to update the fuel gauge
indication.
Engine Coolant Temperature Gauge
Engine coolant temperature information is received by the instrument cluster from the PCM over the
SCP network. Engine coolant temperatures above 121°C (250°F) will cause the gauge to indicate
above the normal band. If the engine coolant temperature information is missing or invalid for five
seconds, the temperature gauge will indicate below the cold (C) position.
Voltage Gauge (except Cobra)
The voltage gauge displays the system voltage as measured at the instrument cluster run input. Boost Gauge (Cobra only) Klj . 2 ba
412003 Mustang Workshop Manual
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