TE22 - Check TFT Circuit For Short to Ground

- Key "OFF".

- Transmission connector disconnected.

- Breakout box installed, disconnect Powertrain Control Module (PCM).

- Measure resistance between Transmission Fluid Temperature (TFT) test pin and test pins 40, 60 and 46 at the breakout box.

TFT Test Pin Number
AODE/4R70W transmission pin 49
E4OD transmission pin 42

- Is each resistance greater than 10,000 ohms?

Yes -- Replace PCM. Remove breakout box. Reconnect all components. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)

No -- Service short circuit. Remove breakout box. Reconnect all components. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)