VPWR1 - VPWR to PCM

- Key OFF.

- Install Breakout Box (leave PCM disconnected).

- Key ON.

- Measure the voltage at BOB Test Pin VPWR.

- Is the voltage greater than 10 volts?

Yes -- Go to VPWR2. VPWR2 - Grounds at PCM

No -- Go to VPWR3. VPWR3 - VPWR Wire From Main Relay to PCM