DR8 - Check For Shorts In PCM

- Key Off.

- CMP sensor disconnected.

- Breakout box installed.

- Connect PCM to breakout box.

- Measure resistance between Test Pin 85 (CID) and Test Pins 51,103 (PWR GND), 71, 97 (VPWR), 91 (SIG RTN), and 23 (IGN GND) at the breakout box.

- Is each resistance greater than 500 ohms?

YES -- Go to DR9. DR9 - Check CMP Sensor Output

NO -- REPLACE PCM. REMOVE breakout box. RECONNECT all components. Rerun quick test. Diagnostic Subroutines (DSR) - Extracting Codes