Illumination Does Not Come On, Or Cannot Dim

Trouble symptom: 

Even when the lighting switch is operated, the illumination does not come on. Even when the illumination

control is operated, the illumination does not dim.

Trouble causes: 

Open circuit in illumination circuit

Wiring diagram: 

Clearance light and illumination light system. Ref. to WIRING SYSTEM (CROSSTREK MODEL (HEV))>CLEARANCE LIGHT AND ILLUMINATION LIGHT SYSTEM>WIRING DIAGRAM .

Courtesy of SUBARU OF AMERICA, INC.

1. CHECK ILLUMINATION  .

   Make sure that all illuminations except A/C come on.

   Do other illuminations come on?

   Yes:  Go to  2.

   No:  Check the illumination circuit. Ref. to LIGHTING SYSTEM>CLEARANCE LIGHT AND ILLUMINATION LIGHT SYSTEM>INSPECTION .

2. CHECK CONNECTOR  .

   Check for poor contact of connector.

   Is the check result OK?

   Yes:  Go to  3.

   No:  Repair the connector.

3. CHECK HARNESS (OPEN CIRCUIT)  .
   1. Turn the lighting switch to ON.
   2. Using a tester, measure the voltage between the A/C control panel connector and chassis ground.

      Connector and terminal 

      (i329) No. 8 (+) - Chassis ground (-):

   Is the voltage 10 V or more?

   Yes:  Go to  4.

   No:  Repair or replace the open circuit of harness.

4. CHECK HARNESS (OPEN CIRCUIT)  .
   1. Turn the lighting switch to OFF.
   2. Measure the resistance between A/C control panel connector and combination meter connector.

      Connector and terminal 

      (i329) No. 2 - (i10) No. 34:

   Is the resistance less than 10 Ω?

   Yes:  Replace the A/C control panel. Ref. to AIR CONDITIONER (HEV)>CONTROL PANEL .

   No:  Repair or replace the open circuit of harness.