Diagnostic Trouble Code Tests and Associated Procedures

Diagnostic Trouble Code Chart





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b Output circuit check, generated only by electrical symptoms.
c The TCIL code will set on the first fault occurrence. On the second fault occurrence, plus the second power up, the MIL and TCIL will illuminate.
a May also be generated by some other non-electric transaxle hardware system

Rotunda Transmission Tester
The Rotunda Transmission Tester is used to diagnose electronically controlled transaxles and is used in conjunction with the pinpoint tests. The tests should be carried out in order. Installing the Rotunda Transmission Tester allows separation of the vehicle electronics from transaxle electronics; refer to the Rotunda Transmission Tester manual for these tests.
- Bench Testing-Engine OFF
- Resistance/Continuity Test
- Solenoid Voltage Test
- Dynamic Testing-Engine ON
- EPC Solenoid
- Transaxle Engagement
- Upshifts/Downshifts
- Torque Converter Clutch (TCC) Engagement
- Coast Clutch Engagement
- Turbine Shaft Speed (TSS) Sensor Digital Transmission Range (TR) Sensor Testing
- Resistance/Continuity Test
- Sensor Test
- Switch Test-PARK/NEUTRAL, Backup Lamp and Optional Circuits
Use Transmission Tester and CD4E Update Kit to diagnose electronically controlled transaxles. The following instructions outline the set-up and use of this tester in the pinpoint tests for the CD4E.





Transaxle Vehicle Harness Connector





Output Shaft Speed (OSS) Sensor Connector





Transmission Range (TR) Sensor Connector





Turbine Shaft Speed (TSS) Sensor Connector