DG5 - Check KS Circuit For Short to Power
- Key "OFF".
- Breakout box installed, Powertrain Control Module (PCM) disconnected.
- Knock Sensor (KS) disconnected.
- Key "ON", engine "OFF".
- Measure voltage between test pin 23 and test pin 40 at breakout box.
- Is voltage less than 0.5 volt?
Yes -- Replace PCM. Remove breakout box. Reconnect all components. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)
No -- Service short circuit. Remove breakout box. Reconnect all components. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)