Power Will Not Turn On. Illumination Does Not Light

Probable cause: 

Power supply circuit malfunction, unit body malfunction

Wiring diagram: 

Combination meter system Ref. to WIRING SYSTEM>COMBINATION METER SYSTEM .

Courtesy of SUBARU OF AMERICA, INC.

1. CHECK FUSE  .
   1. Turn the ignition to OFF.
   2. Check fuse No. 11 in the main fuse box and fuse No. 30 in the fuse and relay box. Ref. to WIRING SYSTEM>COMBINATION METER SYSTEM>WIRING DIAGRAM .

   Is the check result OK?

   Yes:  Go to  2.

   No:  Replace the fuse. If the fuse is blown again, check or replace the short circuit of the power supply harness.

2. CHECK CONNECTOR  .

   Check the connecting condition of the combination meter connector.

   Is the check result OK?

   Yes:  Go to  3.

   No:  Connect the connector securely. Or repair the poor contact of connector.

3. CHECK CONNECTOR  .

   Check if the connector is connected to the combination meter and there is poor contact in the connector.

   Is the check result OK?

   Yes:  Go to  4.

   No:  Repair or replace the harness.

4. CHECK POWER SUPPLY CIRCUIT  .
   1. Disconnect the connector from the combination meter. Ref. to INSTRUMENTATION/DRIVER INFO>COMBINATION METER>REMOVAL .
   2. Turn the ignition switch to ON.
   3. Use a tester to measure the voltage between the combination meter connector and chassis ground.

      Connector & terminal 

      (i97) No. 1 (+) - Chassis ground (-):

      (i97) No. 2 (+) - Chassis ground (-):

   Is the voltage 10 - 16 V?

   Yes:  Go to  6.

   No:  Go to  5.

5. CHECK POWER SUPPLY CIRCUIT  .
   1. Turn the ignition to OFF.
   2. Using a tester, measure the resistance between the combination meter connector and F/B and M/B.

      Connector & terminal 

      (i97) No. 1 - M/B fuse No. 11:

      (i97) No. 2 - F/B fuse No. 30:

   Is the resistance less than 1 Ω?

   Yes:  Check the battery and the circuit between the battery and fuse.

   No:  Repair or replace the open circuit of harness.

6. CHECK GROUND CIRCUIT  .

   Use a tester to measure the resistance between the combination meter connector and chassis ground.

   Connector & terminal 

   (i97) No. 40 - Chassis ground:

   (i97) No. 28 - Chassis ground:

   Is the resistance less than 1 Ω?

   Yes:  Go to  7.

   No:  Repair or replace the open circuit of harness.

7. CHECK BATTERY  .

   Check the battery. Ref. to STARTING/CHARGING SYSTEMS (H4DO)>BATTERY>INSPECTION .

   Is the check result OK?

   Yes:  Go to  8.

   No:  Charge or replace the battery. Ref. to STARTING/CHARGING SYSTEMS (H4DO)>BATTERY .

8. CHECK OPERATION  .
   1. Connect all connectors.
   2. Turn the ignition switch to ON.

   Does the power turn ON?

   Yes:  Currently no failure is found.

   No:  Replace the combination meter. Ref. to INSTRUMENTATION/DRIVER INFO>COMBINATION METER .