Sensor, Particulate Matter: Removal

Disconnect the negative battery cable.
Raise and support the vehicle. Refer to HOISTING, STANDARD PROCEDURE .

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Disconnect the Particulate Matter (PM) sensor wire harness connector (4).
Disconnect the PM sensor module wire harness from retainer (2).
Remove nuts (3) and the PM sensor module (1).

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Remove retainers (2) and slightly pull down on exhaust heat shield (1) to expose wire.

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Using a six sided crow foot, remove the PM sensor (1) from the Selective Catalyst Reduction (SCR).
If the PM sensor fails to loosen use a torque wrench set to 160 N.m (118 ft. lbs.) and loosen PM sensor (1).
NOTE:
DO NOT use a torch as a heat source.
If the PM sensor is still not loose after applying 160 N.m (118 ft. lbs.), then use a heat gun to the PM sensor boss for 1 minute at 450° C (842° F).