3-5
Published 9-04-2014, Control # 422-08
RT765E-2 SERVICE MANUAL SERVICE MANUAL ELECTRICAL SYSTEM
The following fuse assignments apply:
• Fuse 1 - Ignition Power in circuit
• Fuse 2 - Steering Column Power circuit
• Fuse 3 - Dome Light and Working Lights
• Fuse 4 - Spare
• Fuse 5 - ACC power and Diagnostic Connector circuit
• Fuse 6 - Ignition power out
• Fuse 7 - Engine ECM Ignition Signal and Emergency
Stop
• Fuse 8 - Key Switch Accessory Power
• Fuse 9 - Cab Control Modules Power
• Fuse 10 - Turntable I/O Module
• Fuse 11 - Turntable Power Module (Horn, Fan Motor)
• Fuse 12 - Turntable Power Module (AC Condenser
Motor, Boom Lights, Counterweight Removal - Option)
• Fuse 13 - RCL CPU
• Fuse 14 - Luffing Jib Option
• Fuse 15 - Jib Stowage Power Option
• Fuse 16 - Spare - 5A Max
• Fuse 17 - Spare - 5A Max
• Fuse 18 - Windshield Wiper
• Fuse 19 - Skylight Wiper
• Fuse 20 - Circulating Fan
Carrier Electrical Panel
The carrier electrical panel contains the battery disconnect
switch, main power relay, and fuses that control power to the
crane’s entire electrical system. The panel (Figure 3-6) is
located on the fuel tank side of the crane, under the battery
box assembly.
The coil of the main power relay (1) (Figure 3-6) is energized
when the ignition switch is at the RUN or ACC position, or
while he crane’s control system Master Module commands it
to be on, or when the head lights, tail lights or brake lights are
activated.
The fuse panel consists of:
• Fuses 1 through 5 are energized anytime the battery
disconnect switch is closed and the batteries are
connected.
• Fuses 6 and 7 are only energized when the Ignition
keyswitch is in the RUN and START positions.
• Fuse 8 is energized when the Ignition keyswitch is in the
ACC and RUN positions. It is not energized while in
START position.
• Fuses 9 through 12 are energized when ACC Relay #1
is energized. ACC Relay # 1 is energized during the
following:
- Anytime the Ignition keyswitch is in the ACC and
RUN positions.
- Brake pedal is depressed.
- Headlight switch is turned on.
- Hazard switch is turned on.
• Fuses 13 thru 20 are energized when ACC Relay #2 is
energized. ACC Relay #2 is energized anytime the
18 Seat Harness
19 Superstructure Harness
20 Overhead Harness
21 Empty
22 Cab Interior Harness
23 Cab Interior Harness
24 Cab Interior Harness
25 Cab Interior Harness
26 Superstructure Harness
27 Empty
Item Component
Reference Only