This Troubleshooting Chapter contains information needed to locate fault malfunctions on the 966H Wheel Loader and
its components and is organized as follows:
Troubleshooting Introduction. Troubleshooting Introduction gives a description of troubleshooting work packages,
provides a troubleshooting flow chart, identifies preliminary troubleshooting procedures, addresses operational tests,
and provides a glossary. Use the chart on the following page to start troubleshooting.
How To Use On-board Diagnostics. How to Use On-Board Diagnostics (WP 0006 00) gives an overview of the capa-
bilities and features that are part of the machine's electronic system.
How To Connect To MSD With ET. How to Connect to MSD with ET (WP 0005 00) gives an overview of how to
install the software and how to connect the hardware for the MSD with ET.
Troubleshooting Symptom Index. Troubleshooting Symptom Index is located in WP 0007 00. This directs you to the
Troubleshooting Without a Diagnostic Code. Troubleshooting without a diagnostic code is located in Tables 1 thru 8
Troubleshooting With a Diagnostic Code. Troubleshooting with a diagnostic code is located in Tables 1 thru 15 of WP
Test, Inspections, and Adjustments. Identifies additional tests, inspections, and adjustments required as part of the
Troubleshooting procedures in this manual cannot provide all the answers or correct all malfunctions encountered.
However, these procedures provide an organized step-by-step approach to a problem, that directs inspections and tests toward
the source of the problem and its successful resolution.
Before performing troubleshooting, read and follow all safety instructions found in the Warning Summary at the front of
Theory of Operation (WP 0003 00) presents a systems overview and provides a description and use of each component. Sche-
matics (WP 0237 00) provides a detailed map of the electrical and hydraulic components.