Remove the harness holder (A).

Check the PCV valve (A), the hoses (B), the pipe (C), and the connections for leaks or restrictions.

At idle, make sure there is a clicking sound from the PCV valve when the hose between the PCV valve and the intake manifold is lightly pinched (A) with your fingers or pliers.
If there is no clicking sound, check the PCV valve washer for cracks or damage. If the washer is OK, replace the PCV valve and recheck.

Driveshaft Removal
Special Tools Required
Ball Joint Remover, 28 mm 07MAC-SL0A202
Ball Joint Thread Protector, 14 mm 071AF-S3VA000
Raise and support the vehicle.
Remove the front wheel.
...
Rectifier Test
Check for continuity in each direction, between the B terminal and P terminals,
and between the E terminal and P terminals of each diode pair. All diodes should
have continuity in only one ...