TF93 - Check TSS/OSS Resistance

- Key "OFF".

- Turbine Shaft Speed Sensor (TSS) disconnected.

- Measure resistance of TSS / Output Shaft Speed Sensor (OSS).

- For CD4E Transmission TSS:

- Is the resistance between 80 and 200 ohms?

- For AODE/4R70W Transmission OSS:

- Is the resistance between 450 and 750 ohms?

Yes -- Go to Transmission and Drivetrain to verify internal components. If OK, then replace PCM. Remove breakout box. Reconnect TSS. Repeat test step TF90 to verify elimination of DTC. TF90 - Complete Transmission Drive Cycle

No -- Replace TSS/OSS. Remove breakout box. Repeat test step TF90 to verify elimination of DTC. TF90 - Complete Transmission Drive Cycle