Section 6. Messages and Codes
Model 4700 Maintenance Manual
Fault Codes
Fault Codes Intermittent Codes If a code appears intermittently, check for shorts to frame. Refer to Shorts to Frame on page 5-2. Check or install static strap.
Multiple Codes If multiple codes are displayed, compare all codes to determine if they have anything in common. Examine the functions of the truck – what works and what does not. Compare the codes with truck functions to determine the best starting point for troubleshooting. This will help avoid replacement of parts that do not resolve the issue.
Check communication wires between all modules for continuity and shorts to frame per Pinout Matrix. If OK, replace affected manager. NOTE: The Operator’s Display is a read-only device. “d-series” codes indicate that the display is not receiving communication from one or more managers. Check communication lines between the display and affected manager(s). Check for communication codes between affected manager(s) and other managers.
A code can be displayed and then another seemingly unrelated code will follow. Codes are generated by multiple managers. The first code displayed does not necessarily mean it is more significant than subsequently displayed codes. In some cases, it is possible for codes to be displayed that should not be displayed on the truck (option not on truck, truck specific code not for this truck). This can be caused by a bad TPA, PPA, VM, Armrest Board, or Hydraulic Control Board, shorts to frame, or swapping parts. If an invalid code is displayed, use FlashWare to determine if the truck’s identity or options have been changed.
Communication Codes Check power to all managers. This includes the TPA, PPA, VM, Armrest Board, and Hydraulic Control Board. Using FlashWare, determine if the truck identity or options have been changed. Look for software model versions that are either incorrect or missing. If a manager is not able to communicate with FlashWare this can help identify where to start looking for problems.
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Publication 1160093, Issued: 20 May 2013
