SN-56963735 - How to troubleshoot Traction Plus Stall Error

Test procedure #1

1. Turn the power off.
2. Move front module (FM) to the middle position
3. Move rear module (RM) to the middle position
4. Turn the power on.
5. Check which module does not move and reports stall error (#1 = RM, #2 = FM)
6. Turn the power off
7. Swap LOGIC cable (rear and front)
8. Swap COM cable (rear and front)
9. Move front module (FM) to the middle position
10. Move rear module (RM) to the middle position
11. Turn the power on.
12. Check which modules does not move

Interpretation

• If in step #5 FM does not move and in step #12 RM does not move, then one of COM/LOGIC cables is faulty.
• If in step #5 RM does not move and in step #12 FM does not move, then one of COM/LOGIC cables is faulty.
• If in step #5 FM does not move and in step #17 still FM does not move, then perform Test procedure #2
• If in step #5 RM does not move and in step #17 still RM does not move, then perform Test procedure #2

Test procedure #2

1. Turn the power off.
2. Move front module (FM) to the middle position
3. Move rear module (RM) to the middle position
4. Turn the power on.
5. Check which module does not move and reports stall error (#1 = RM, #2 = FM)
6. Turn the power off
7. Unplug rear and front LOGIC cables
8. Unplug rear and front COM cables
9. Unplug power cable that connects center module (CM) to FM
10. Rotate CM 180 degree
11. Connect rear and front LOGIC cables
12. Connect rear and from COM cables
13. Disconnect main power cord from FM and from the wall socket and connect it to CM’s power cable.  This bypasses the Power Switch in FM.
14. Move front module (FM) to the middle position
15. Move rear module (RM) to the middle position
16. Connect power cord to the wall socket. This will turn on the device.
17. Check which modules does not move

Interpretation

• If in step #5 FM does not move and in step #17 RM does not move, then CM is probably faulty.
• If in step #5 RM does not move and in step #17 FM does not move, then CM is probably faulty.
• If in step #5 FM does not move and in step #17 still FM does not move, then FM is probably faulty.
• If in step #5 RM does not move and in step #17 still RM does not move, then RM is probably faulty.