Torque Converter Diagnosis

Torque Converter Diagnosis





Prior to torque converter installation, all diagnostic procedures must be followed. This is to prevent the unnecessary installation of new or remanufactured torque converters. Only after a complete diagnostic evaluation can the decision be made to install a new or remanufactured torque converter.

Begin with the normal diagnostic procedures as follows:

1. Preliminary Inspection

2. Know and Understand the Customer Concern

3. Verify the Concern - carry out the torque converter operation test Torque Converter Operation Test

4. Carry out Diagnostic Procedures:
- Retrieve and record all DTCs. Refer to Diagnostics Diagnostics.
- Repair all non-transaxle related DTCs first.

- Repair all transaxle DTCs.

- Carry out Pressure Test. Refer to Special Testing Procedures Special Testing Procedures. Pressure Test

- Carry out Stall Speed Test. Refer to Special Testing Procedures Special Testing Procedures. Stall Speed Test

- Carry out diagnostic routines. Refer to Diagnosis By Symptom Diagnosis By Symptom. Diagnostic Routines

- Use the index to locate the appropriate routine that best describes the symptom(s). The routine will list all possible components that may cause or contribute to the symptom. Check each component listed, diagnose and repair as required, before repairing the torque converter.