5 - 33 ELECTRICAL
GEM Service Manual November 2007
DC/CONVERTER
DESCRIPTION
Fig. 17 DC/DC Converter
1 - Motor Controller
2 - DC/DC Converter
The DC/DC converter is located under the hood
assembly. The converter serves the same function;
converting the high voltage delivered by the
batteries (72 VDC) to lower voltage (12 VDC). The
lower voltage is used to power all the devices that
are part of the accessory system – Ignition,
headlights, taillights, directional indicators, brake
lights, horn, heater, light bar, power outlet, radio
and wiper.
OPERATION
The DC/DC converter functions automatically when
the master disconnect switch is in the ON position.
DIAGNOSIS AND TESTING
Diagnosis and testing of the DC/DC converter is
covered in the Accessory System Troubleshooting
Chart. The circuit diagrams provided in this manual
are also useful in isolation of problems associated
with the DC/DC converter.
REMOVAL
1. Turn the master disconnect switch OFF.
2. Open the hood assembly.
3. Remove the electrical connector, noting
connection and orientation.
4. Remove the 6 nuts and bolts from the DC/DC
converter and remove the converter.
INSTALLATION
1. Install the converter in place, and install the six
nuts and bolts. Torque to 120 in-lbs.
2. Orient and attach the DC/DC converter
connector.
3. Turn the master disconnect switch ON.
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