4. Detect Malfunctioning Part

WARNING: This page is about a different car, the 2004 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

Check the following.

Harness connectors F44, F101
Harness for open and short between ECM and intake valve timing control solenoid valve
1. Repair open circuit or short to ground or short to power in harness or connectors.