Si-Drive Mode Indication Does Not Change And Modes Do Not Switch After Switching Si-Drive Modes

Wiring diagram: 

Engine Electrical System Ref. to WIRING SYSTEM>Engine Electrical System>WIRING DIAGRAM .

Fig 1: Combination Meter - Wiring Diagram

Courtesy of SUBARU OF AMERICA, INC.

1. CHECK SI-DRIVE SWITCH. 
   1. Turn the ignition switch to OFF.
   2. Disconnect the connector from the combination meter.
   3. Measure the resistance when the SI-DRIVE switch is operated.

      Connector & terminal 

      (i10) No. 31 - Chassis ground:

      Does the resistance change as below?

      S#/I: 1.71 - 1.89 kΩ

      S/I: less than 1 Ω

   • Yes  : Go to  5.
   • No  : Go to 2. 
2. CHECK HARNESS BETWEEN COMBINATION METER AND SI-DRIVE SWITCH CONNECTOR. 

   Measure the resistance of harness between combination meter connector and SI-DRIVE switch connector.

   Connector & terminal 

   (i10) No. 31 - (ST3) No. 8:

   Is the resistance less than 1 Ω?

   • Yes  : Go to 3. 
   • No  : repair the harness and connector.
     NOTE: In this case, repair the following item:

     • Open circuit in harness between combination meter connector and SI-DRIVE switch connector
     • Poor contact of coupling connector
     • Poor contact of roll connector
     • Roll connector is faulty
3. CHECK HARNESS BETWEEN SI-DRIVE SWITCH CONNECTOR AND CHASSIS GROUND. 

   Measure the resistance of harness between SI-DRIVE switch connector and chassis ground.

   Connector & terminal 

   (ST3) No. 7 - Chassis ground:

   Is the resistance less than 1 Ω?

   • Yes  : Go to 4. 
   • No  : repair the harness and connector.
     NOTE: In this case, repair the following item:

     • Open circuit in harness between SI-DRIVE switch connector and chassis ground
     • Poor contact of joint connector
     • Poor contact of roll connector
     • Roll connector is faulty
4. CHECK HARNESS BETWEEN COMBINATION METER AND SI-DRIVE SWITCH CONNECTOR. 

   Measure the resistance between combination meter connector and chassis ground.

   Connector & terminal 

   (i10) No. 31 - Chassis ground:

   Is the resistance 1 MΩ or more?

   • Yes  : Repair the poor contact of SI-DRIVE switch connector. Replace the SI-DRIVE switch if defective. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DOTC)>SI-DRIVE (SUBARU Intelligent Drive) Selector .
   • No  : Repair the short circuit to ground in harness between combination meter and SI-DRIVE switch connector.
5. CHECK HARNESS BETWEEN COMBINATION METER AND CHASSIS GROUND. 

   Measure the resistance of harness between combination meter and chassis ground.

   Connector & terminal 

   (i10) No. 38 - Chassis ground:

   Is the resistance less than 5 Ω?

   • Yes  : Go to 6. 
   • No  : Repair the open circuit of harness between combination meter and chassis ground.
6. RECHECK FAULT. 
   1. Connect all connectors.
   2. Switch SI-DRIVE modes.

      Is there any fault?

   • Yes  : Repair the poor contact of combination meter connector. Replace the meter case assembly if defective. Ref. to INSTRUMENTATION/DRIVER INFO>Combination Meter .
   • No  : The circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.
     NOTE: In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.