Check Ignition Switch Illumination

Step	Check	Yes	No
1 CHECK IGNITION CIRCUIT. Check the ignition circuit.	Is the circuit normal?	Go to step 2.	Repair or replace.
2 CHECK DOOR SWITCH CIRCUIT. Inspect door switch circuit.	Is the circuit normal?	Go to step 3.	Repair or replace.
3 CHECK FUSE. Remove and visually check fuse No. 18 (in the main fuse box).	Is the fuse blown out?	Replace the fuse with a new part.	Go to step 4 .
4 CHECK HARNESS. Disconnect the ignition switch illumination connector. Measure the voltage between ignition switch illumination connector and chassis ground. Connector & terminal (B350) No. 1 (+) - Chassis ground (-):	Is the voltage 10 V or more?	Go to step 5.	Check the harness for open or short circuits between the ignition switch illumination and fuse.
5 CHECK IGNITION SWITCH ILLUMINATION CIRCUIT. Disconnect the body integrated unit connector. Check the harness between body integrated unit connector and ignition switch illumination connector. Connector & terminal (B280) No. 25 - (B350) No. 2:	Is harness normal?	Go to step 6.	Check the harness for open circuits and shorts between the body integrated unit and ignition switch illumination.
6 CHECK IGNITION SWITCH ILLUMINATION BULB. Apply battery voltage to the bulb.	Does the bulb illuminate?	Replace the body integrated unit. Refer to , BODY INTEGRATED UNIT .	Replace the ignition switch illumination bulb. Refer to IGNITION SWITCH ILLUMINATION REMOVAL, Ignition Switch Illumination.