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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)
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