An open or a short in the power supply circuit to the fuse Ef12.

Repair or replace the wiring harness.

Fuse Ef12 is blown.

Replace the fuse Ef12.

The circuit between the fuse Ef12 and the terminal 2 of the HVAC panel illumination connector is the open circuit or a short circuit.

Repair or replace the wiring harness.

A faulty HVAC panel illumination connector.

Repair or replace the instrument panel illumination connector.

HVAC panel illumination bulb is blown.

Replace the bulb.

An open ground (G201) circuit.

Repair the open ground circuit.