3. Detect Malfunctioning Part

WARNING: This page is about a different car, the 2004 Infiniti Q45. However, it is still accessible from the selected car via links, so may be relevant.

Check the following.

Harness connectors E32, F32
10A fuse
Fuse, fusible link and relay block (J/B) terminal E3
Harness for open or short between intake valve timing control position sensor and fuse
1. Repair open circuit or short to ground or short to power in harness or connectors.