Check Ignition Switch Illumination

DIAGNOSIS PROCEDURE CHART

Step	Check	Yes	No
1 CHECK FUSE. Remove and visually check the fuse No. 14 (in the main fuse box).	Is the fuse blown out?	Replace the fuse with a new part.	Go to step 2.
2 CHECK POWER SUPPLY. Disconnect the ignition switch illumination harness connector. Measure the voltage between harness connector terminal and chassis ground. Connector & terminal (B224) No. 2 (+) - Chassis ground (-):	Is the voltage 10 V or more?	Go to step 3.	Check the harness for open circuits and shorts between the ignition switch illumination and fuse.
3 CHECK IGNITION SWITCH ILLUMINATION CIRCUIT. Disconnect the harness connector of body integrated unit. Measure the resistance between body integrated unit harness connector terminal and ignition switch illumination harness connector terminal. Connector & terminal (B280) No. 4 - (B224) No. 1:	Is the resistance less than 10 Ω?	Go to step 4.	Check the harness for open circuits and shorts between the body integrated unit and ignition switch illumination.
4 CHECK IGNITION SWITCH ILLUMINATION BULB. Remove the ignition switch illumination bulb. Connect the battery (+) terminal and (-) terminal to the illumination bulb.	Does the bulb illuminate?	Replace the body integrated unit. Ref. to BODY INTEGRATED UNIT .	Replace the ignition switch illumination bulb with a new part.