2. Detect Malfunctioning Part

WARNING: This page is about a different car, the 2004 Infiniti M45. However, it is still accessible from the selected car via links, so may be relevant.

Check the following.

Fuse block (J/B) connector M1
10A fuse
Joint connector-10
Harness for open or short between fuse block (J/B) and combination meter
1. : Repair open circuit or short to ground or short to power in harness or connectors.