Rotunda Transmission Tester
WARNING: This page is about a different car, the 2006 Mercury Grand Marquis and 2006 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.
The Rotunda Transmission Tester is used to diagnose the digital transmission range (TR) sensor 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. Refer to the Rotunda Transmission Tester manual for these tests.
- Digital Transmission Range (TR) Sensor Testing
- Resistance/Continuity Test
- Voltage Test - PARK/NEUTRAL, REVERSE Lamp and Optional Circuits