TB3 - Check Harness Circuit(s) For Short to Ground

- Key Off.

- Breakout box installed, leave PCM disconnected.

- Disconnect TCS. Inspect both ends for damaged or pushed out pins, moisture, corrosion, loose wires, etc. Service as necessary.

- Measure the resistance between Test Pin 29 and Test Pins 24 and 77 at the breakout box.

- Is the resistance greater than 10,000 ohms?

YES -- GO to TB4. TB4 - Check Continuity of the TCS Harness

NO -- SERVICE short circuit. RERUN Self-Test.