TF4 - Check OSS Circuit For Short to Power

- Key Off.

- OSS disconnected.

- Breakout box installed. PCM disconnected.

- Measure resistance between Test Pin 84 and Test Pin 71 (VPWR) at the breakout box.

- Is the resistance less than 5.0?

YES -- SERVICE short circuit. REMOVE breakout box. RECONNECT all components. REPEAT Transmission Drive Cycle. REFER to TF1. TF1 - Continuous DTC 0720: Perform Transmission Drive Cycle

NO -- GO to TF5. TF5 - Check OSS Resistance