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| Illustration 1 | g01822155 |
Right Side of Console (1) Electrical panel (2) ECM fuse (3) Propel fuse | |
Electrical panel (1) is mounted on the right console. A cover (not shown) on the right console must be removed in order to access the electrical panel. A cover (not shown) over the electrical panel protects the components. The reverse side of the electrical panel cover identifies each fuse, each circuit breaker, and each relay in the electrical panel.
ECM fuse (2) provides power to the following terminals of the machine ECM: "J1-31", "J1-38", "J1-39", "J1-46" and "J1-47". This fuse is rated at 10 amp.
When the main power relay is energized, power is available at propel fuse (3). This fuse is rated at 10 amp. The propel fuse provides power to the following locations:
- Terminal "2" of the propel lever microprocessor
- Terminal "J1-1" of the machine ECM
- Terminal "J2-1" of the machine ECM
- Terminal "J1-40" of the engine ECM
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| Illustration 2 | g01822156 |
Right Side of Machine (4) Engine ECM breaker | |
A second electrical panel is located on the right side of the engine compartment. The engine compartment cover provides access to the panel.
Engine ECM circuit breaker (4) provides power to the engine ECM from the alternator.
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| Illustration 3 | g01822158 |
Front of Engine (5) CAN resistor | |
The electronic control system is equipped with two CAN resistors. One CAN resistor (5) is located in the right console. A cover must be removed in order to access this component.
Differences in materials along the CAN bus can cause data pulses in the bus to reflect back through the bus. This reflection, also known as (jitter), creates unwanted noise in the CAN bus. Jitter in the communication lines between computers can distort the original data signals. The distortion can result in data loss.
Data in the CAN bus can also be contaminated with radio frequency interference (RFI). This interference can be caused by a number of devices which operate on the machine or near the machine. RFI creates noise in the communication lines which can also distort the original data signals and cause data loss.
In order to prevent data loss in the communication lines, a termination resistor is required at each end of the CAN bus. The CAN resistors act as termination resistors. The CAN resistors absorb unwanted noise in the communication system which can result in abnormal machine operation.
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| Illustration 4 | g01822159 |
Right Side of Machine (6) CAN resistor | |
Second CAN resistor (6) is located in the engine compartment on the front side of the engine. The engine compartment door provides access to this component.