TF91 - Check TSS/OSS Circuit Continuity

- Key "OFF".

- Disconnect Powertrain Control Module (PCM). Inspect for damaged or pushed out pins, corrosion, loose wires, etc. Service as necessary.

- Install breakout box, PCM disconnected.

- Disconnect Turbine Shaft Speed Sensor (TSS) / Output Shaft Speed Sensor (OSS).

- Measure resistance between test pin 5 at breakout box and TSS/OSS circuit at sensor vehicle harness connector.

- Measure resistance between test pin 46 at breakout box and SIG RTN at the TSS/OSS vehicle harness connector.

- Is each resistance less than 5.0 ohms?

Yes -- Go to TF92. TF92 - Check TSS/OSS Circuit For Short to Power or Ground

No -- Service open circuit. Remove breakout box. Reconnect all components. Repeat test step TF90 to verify elimination of DTC. TF90 - Complete Transmission Drive Cycle