- Diagnosis Symptoms Index

HYDRAULIC SYSTEM
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. Refer to Transmission Control Systems.
- 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 this chart.