Tribute LX 2WD V6-3.0L DOHC (2001)
in Figure 10. Wrap a clean shop cloth around the hard shell of the coil to help keep the coil propped up and stable.
CAUTION: The coil boot can be damaged if the coil sparks to another surface during this procedure.
Keep the coil connected to the harness and leave the WDS COP clip attached to the coil. Route the coil clip wire and cable away from the coil being
tested as well as other coils to avoid noise interference. Disconnect the injector of the cylinder being tested so raw fuel is not washing the cylinder. This
is a stress test for the coil. The type of waveform displayed on the oscilloscope will show whether a coil or the plug is the problem if all previous steps
have been followed. Keep hands and tools away from the end of the coil that supplies the spark.
COP STRESS TEST PROCEDURE:
1. Go to the Oscilloscope Tool and select Channel 3, then select Auto, then select COPSTRESSTESTRED. This pre-configured setting will zoom-in on
the peak firing of the coil being tested.
2. Start the engine and be sure the coil is not sparking to any surface.
- If the coil is sparking to other surfaces, turn the engine off immediately and readjust the coil so it cannot spark to any other surface.
3. Restart the engine and touch the Red Man icon to start the oscilloscope. All settings are pre-configured and no adjustments are necessary.
4. Compare the waveform you get with the examples provided in Figures 11, 12, and 13). Figure 11 is a good waveform. If your waveform is similar to
Figure 11 the coil is working correctly. Suspect the spark plug.
Figure 11
