ECM pmCAN Module Instruction Manual page 55

Then blow dry air on the electrode and the annulus between the electrode and the body of the
sensor. You need to remove all the towel's particles, PM particles, and evaporate the solvent.
Normally, you do not have to clean in the annulus. If you do, you can use a q-tip soaked in
brake cleaner. Do not just spray all over the sensor body with brake cleaner. Always use a
paper towel or q-tip.
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