FG11 - Check PCM Integrity

- Key Off.

- OCT ADJ shorting bar removed because of TSB authorization.

- Breakout box installed, PCM connected.

- Key On.

- Measure voltage between OCT ADJ circuit and Test Pins 51 and 103 at the breakout box.

- Is voltage greater than 4.0 volts?

YES -- REMOVE breakout box. If spark knock is still present, RETURN to Symptom Flowcharts. Testing and Inspection

NO -- REPLACE PCM. REMOVE breakout box. If spark knock is still present, RETURN to Symptom Flowcharts. Testing and Inspection