Rotunda Transmission Tester

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 transmission electronics.
^ Bench Testing - Engine OFF
^ Solenoid Voltage Test
^ Dynamic Testing - Engine ON
^ EPC Solenoid
^ Transmission Engagements
^ Upshifts/Downshifts
^ Torque Converter Clutch (TCC) Engagement
^ Output Shaft Speed (OSS) Sensor
^ Turbine Shaft Speed (TSS) Sensor
^ Digital Transmission Range (TR) Sensor Testing
^ Resistance/Continuity Test
^ Sensor Tests
^ Switch Tests - PARK NEUTRAL, Backup Lamp, and Optional Circuits