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| Illustration 1 | g01012909 |
Actual gear indicator circuit | |
The components of the actual gear indicator circuit are the Power Train/Chassis Electronic Control Module (Power Train/Chassis ECM), the AVSpare Monitoring System, the speedometer/tachometer module and the transmission gear position sensor.
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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 | g00997872 |
Dash panel (2) AVSpare Monitoring System | |
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| Illustration 4 | g00997873 |
Dash panel (3) Speedometer/tachometer module (4) Actual gear indicator | |
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| Illustration 5 | g00997876 |
View of transmission compartment (5) Transmission gear position sensor | |
With the key start switch in the ON position, 24 volt power is supplied from the batteries via circuit breaker #10 to the AVSpare Monitoring System and the speedometer/tachometer module. 24 volt power is also supplied from the batteries via circuit breaker #12 to the Power Train/Chassis ECM and the transmission gear position sensor.
Power Train/Chassis ECM (1) receives a signal from transmission gear position sensor (5) for the gear that is currently selected. The signal is sent to AVSpare Monitoring System (2) via the AVS Data Link to speedometer/tachometer module (3). The speedometer/tachometer module will display the actual gear in the display window. Actual gear indicator (4) displays the gear which is currently selected by the transmission.
Reference: For more information on the actual gear indicator system, refer to Systems Operation, Testing and Adjusting, "AVSpare Monitoring System" for the machine that is being serviced.