4. 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 E315, F5
joint connector-29
Harness for open or short between HO2S2 and ground
1. : Repair open circuit or short to power in harness or connectors.