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 and the transaxle electronics.
- 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
- Output Shaft Speed (OSS) Sensor
- Transmission Range (TR) Sensor
- Switch Test Park/Neutral, Backup Lamp, and Optional Circuits