Tribute LX 2WD V6-3.0L DOHC (2001)
Figure 9
If either spark duration or peak KV on the Red Probe (Suspect Cylinder) are offset from the values displayed on the Black Probe (Known Good
Cylinder) then the problem is in the ignition system. Rule out coil primary circuit issues before proceeding to coil secondary issues such as the spark plug
, coil boot, or possibly the coil. Use the WDS Oscilloscope with the COP kit to determine if the issue is the coil or the spark plug.
NOTE: Note live display has to average ignition values because there is too much data to display. Make a capture to view each engine event without
averaging. This can be helpful when the problem is intermittent. If miss is extremely intermittent and does not show up in ignition, proceed to Step 4.
4. (Select Toolbox, then Oscilloscope)
WARNING: Secondary ignition voltages are very high. Keep hands and tools away from the end of the coil that supplies the spark.
SET-UP: With the engine off, pull the suspect coil from the cylinder well and turn it upside down so the coil cannot spark to any other surface as shown
