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| Illustration 1 | g00999556 |
Backup alarm circuit | |
The components of the backup alarm circuit are the Power Train/Chassis Electronic Control Module (Power Train/Chassis ECM), the backup alarm, and the backup alarm relay.
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| Illustration 2 | g00995567 |
Front view of cab (front cover plate removed) (1) Power Train/Chassis ECM | |
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| Illustration 3 | g00996581 |
Rear view of machine (2) Backup alarm (behind rear lights) | |
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| Illustration 4 | g00996582 |
Front view of cab (front cover plate removed) (3) Backup alarm relay | |
With the key start switch in the ON position, 24 volt power is supplied from the batteries via circuit breaker #12 to the Power Train/Chassis ECM and via circuit breaker #5 to the backup alarm relay.
When reverse gear is selected, Power Train/Chassis ECM (1) supplies a ground circuit to energize backup alarm relay (3) .
With the backup alarm relay energized, 24 volt power is supplied to activate backup alarm (2).