B2 - Check Power Ground 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 and connect PCM to breakout box.

- Measure resistance between battery negative post and test pins 40 and 60 at the breakout box.

- Is each resistance less than 5.0 ohms?

Yes -- Go to B3. B3 - Check Open Between SIG RTN, PWR, GND Circuit At PCM

No -- Service open in PWR GND circuit. Remove breakout box. Reconnect PCM. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)