320 Electrical System
1) Turn the ignition switch to the “run” position, activating the IFM display.
2) On the IFM display, select “Menu”, then select “I/O Status”.
3) Using the up/down arrows on the directional pad, scroll down and select “Others”.
4) The real-time supply voltages of the control modules (Nodes) will be displayed:
If voltage(s) are below 12 volts, check the supply power to the module; if all voltages are below
12 volts, check the chassis battery voltage.
This helps diagnose error messages such as a module disconnected or functions of a module not
receiving their outputs. Once the supply voltages have been verified, further troubleshooting of
various outputs may then be investigated.
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