Key Cylinder Lamp: Testing and Inspection

Ignition Key Illumination Lamp Is Inoperative

Diagnostic Aids

In a vehicle equipped with a sunroof, the interior courtesy lamp is near the rearview mirror and also serves as a map lamp. In a non-sunroof vehicle, the interior courtesy lamp is in the roof in the middle of the passenger compartment. There are separate map lamps near the rearview mirror.
There is a timer in the interior courtesy lamp that will only supply a ground to the key illumination lamp for a few seconds after a door is opened and closed.

Step 1 - 11:

Test Description
The number below refers to Step 5 on the diagnostic table.
1. The resistance of the key illumination bulb and attached harness is approximately 14.1 ohms.