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19. Maintenance and Troubleshooting
No regular maintenance is required, except for cleaning the Engine Monitor lens as required
using a soft, damp cloth. Do not use abrasive materials or solvents, specifically white spirit, petrol
and acetone. Should any further attention be necessary, please contact your supplier. If you are
experiencing operating problems with the Engine Monitor, check these diagnostics:
Problem
Possible solution
Unit does not power up
Ensure connections to unit are correct.
Ensure power source is present.
Display is blank or black
Adjust/reset lighting and contrast settings.
Ensure temperature is within operating range of the unit.
Unit bleeps at start-up and does
not store settings
Unit has failed self-test. Contact your Engine Monitor
supplier
Unit fails to display any data
Ensure connections to unit are correct.
Ensure data source supports J1939 or J1587 message
protocol.
Unit fails to display certain
parameter(s)/unable to select
certain parameter(s)
Ensure the Engine Monitor supports required parameter(s)
Ensure data source provides required parameter(s).
Active alarm messages are not
displayed
Ensure data source provides alarm message data in the
following format: J1939 Active Diagnostic Trouble
Codes- Diagnostic Message 1 (DM1).
Stored alarm messages are not
displayed
Ensure data source provides alarm message data in the
following format: J1939 Active Diagnostic Trouble
Codes- Diagnostic Message 2 (DM2).