Hydraulic System Troubleshooting

Before troubleshooting a problem on Hydraulic System, check the self-diagnosis [D4] indicator light indication. If the [D4] indicator light indicates a trouble code, perform the electrical troubleshooting according to the Electrical System to Component Chart. If the [D4] indicator light does not indicate a trouble code and failure is not found on the electrical troubleshooting, perform the hydraulic troubleshooting following the chart.