Ford Mustang (1999-2004) Service Manual: Charging System (Diagnosis and Testing)
Refer to Wiring Diagrams Cell 12 , Charging System for schematic and connector information.
Special Tool(s)
![]() |
73III Automotive Meter 105-R0057 or equivalent |
![]() |
SABRE Premium Battery and Electrical System Tester 010-00736 or equivalent |
Principles of Operation




Charging System (Description and Operation)
The charging system is a negative ground system consisting of the
following:
generator
internal voltage regulator
charging system warning indicator
storage battery
necessary wirin ...
Functionality
With the ignition switch in the RUN position, voltage is applied
through the warning indicator I circuit
904 (LG/RD) to the voltage regulator. This turns the regulator on,
allowing current to ...
Other materials:
Pinpoint Test B: LFC 21/DTC B1921 - RCM Bracket Ground Resistance High
Normal Operation
WARNING: The tightening torque of the restraints control module
(RCM) retaining bolts is
critical for proper air bag supplemental restraint system (SRS)
operation. Refer to Restraints
Control Module (RCM) in this section for correc ...
Installation
CAUTION: The upper suspension arm and bushing nuts must be tightened
with the
suspension at curb height. Failure to do so can result in bushing failure,
resulting in poor ride
and handling.
NOTE: If installing a new upper suspension arm and bushing, mark the ...
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 ...


