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  .

   Check the fuse for the combination meter. Ref. to WIRING SYSTEM>COMBINATION METER SYSTEM

   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 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  3.

   No  : Engage the connector properly, or repair the faulty portion and check the operation.

3. CHECK POWER SUPPLY CIRCUIT  .
   1. Disconnect the connector from the combination meter.
   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 9 - 16 V?

   Yes  : Go to  5.

   No  : Go to  4.

4. CHECK POWER SUPPLY CIRCUIT  .

   Use a tester to measure the resistance between the combination meter connector and F/B.

   Connector & terminal 

   (i97) No. 1 - F/B fuse No. 37:

   (i97) No. 2 - F/B fuse No. 5:

   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.

5. CHECK GROUND CIRCUIT  .

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

   Connector & terminal 

   (i97) No. 40 - Chassis ground:

   Is the resistance less than 1 Ω?

   Yes  : Replace the combination meter. Ref. to INSTRUMENTATION/DRIVER INFO>COMBINATION METER

   No  : Repair or replace the open circuit of harness.