Hello everyone! I'm facing an issue with another machine displaying the service code D7555. According to the manual, this code indicates a short to ground in the right forward drive. The problem occurs sporadically, causing the forward drive on the right side to lock up while the reverse side remains unaffected. Any insights or advice on resolving this issue would be greatly appreciated. Thank you, Nick.
Experiencing issues with your SJC machine and getting the error code D7555? This code indicates a right forward drive short to ground, causing intermittent locking up of the forward drive on the right side. To troubleshoot, consider checking for a bad drive coil, harness issues at the pump, or a faulty connection between the pump harness and mainframe harness. A quick fix may be to swap the drive coils on that side to see if the problem switches to the opposite direction. If the issue persists, it is likely related to the wiring or connections. To determine which coil is causing the problem, disconnect one of them, power up the system, and attempt to drive to identify the fault.
I have a quick question regarding SJC. I was wondering if the rear coils facing the engine would drive the opposite motion as well. I will investigate this further today. Thank you once again for your help.
I noticed that swapping coils initially resolved the issue, but the fault eventually reappeared with the same code on the same side.
Jacksondemo2754 mentioned that after swapping coils, the fault temporarily disappeared but then resurfaced with the same code on the same side. It's advisable to inspect all connectors carefully, as the issue could potentially be attributed to a loose pin or socket within the connector. Be sure to check for any loose connections to address the problem effectively.
After inspecting the connectors and testing for continuity and ohms, all indicators showed good results. Additionally, I tested the main frame harness and drive controller, both of which tested positively. The issue only occurs when traveling at high speeds over rough terrain, causing the right side to lock up while other movement functions work correctly. Could this be a malfunctioning drive controller causing the problem?
Answer: 1. What does service code D7555 indicate in the machine? - Service code D7555 indicates a short to ground in the right forward drive of the machine.
Answer: - The issue causes the forward drive on the right side to lock up while the reverse side remains unaffected.
Answer: - To resolve the issue, you may need to investigate and address the short to ground in the right forward drive as indicated by the service code D7555.
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