58Service Manual – SC5000 04 - Control System
2-044 M4 Vacuum Motor 1 Overcurrent
2-045 M5 Vacuum Motor 2 Overcurrent
Description
The power module has detected vacuum motor current above 160 amps, which
exceeds the limitations of the power module.
Setting
Conditions
Same
When Monitored
Always
Possible Causes
Because the overcurrent condition has reached the maximum permissible amperage
of the power module, it is likely that the motor or control wiring is shorted.
Initial Action None
Troubleshooting Steps
1. Disconnect the vacuum motor connector located in the battery bay.
2. Check the resistance between the contacts on the harness leading back toward the power module.
− If the resistance is at or near 0 ohms, repair or replace the harness.
− If the resistance is not near 0 ohms, continue.
3. Partially remove the vacuum motor to gain access to the electrical connector adjacent to the motor.
4. Check the resistance between the contacts on the harness leading back toward the power module.
− If the resistance is at or near 0 ohms, repair or replace the sub-harness between the vacuum motor
and the previous connector.
− If the resistance is not near 0 ohms, replace the vacuum motor.
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