AB4 - Check For Spark At Plugs

- Disconnect the spark plug wire to any accessible cylinder.

- Connect spark tester between spark plug wire and engine ground.

- Crank engine and check for spark.

- Reconnect the spark plug wire to spark plug.

- Was spark present and consistent?

Yes -- Go to AB8. AB8 - Check PIP Signal

No -- Go to AB5. AB5 - Check PIP Circuit For Shorts to Power and Ground