Check Illumination Light System

Trouble symptom:

Headlight (including parking light) illuminates, but illumination light does not illuminate.

NOTE: Perform unit inspection of the combination switch (light) and illumination light to check that there are no problems.

CHECK ILLUMINATION LIGHT SYSTEM .
1. Turn the ignition switch to ON.
2. Turn the lighting switch to the switch 2 (HEAD) position.
  Does the illumination light come on?
  
  Yes: Illumination light is normal.
  
  No: Go to 2.
CHECK FUSE .
1. Turn the ignition switch to OFF.
2. Check the following fuses. Ref. to LIGHTING SYSTEM>RELAY AND FUSE>INSPECTION .
  - F/B fuse No. 32: (model without Auto Start Stop)
  - F/B fuse No. 35: (model with Auto Start Stop)
  Is the check result OK?
  
  Yes: Go to 3.
  
  No: Replace the defective fuse.
CHECK HARNESS .
1. Turn the ignition switch to OFF.
2. Disconnect the connector of body integrated unit.
3. Measure the voltage between the body integrated unit connector and chassis ground.
  Connector & terminal
  
  (B280) No. 4 (+) - Chassis ground (-):
  
  Is the voltage 8.5 - 16.5 V?
  
  Yes: Go to 4.
  
  No: Repair or replace the harness.
CHECK HARNESS .
1. Turn the ignition switch to OFF.
2. Disconnect the connectors of body integrated unit and each light.
3. Check the harness between body integrated unit and each light.
  Is harness normal?
  
  Yes: Replace the body integrated unit. Ref. to SECURITY AND LOCKS>BODY INTEGRATED UNIT .
  
  No: Repair or replace the harness.