System Is Reset

Probable cause:

Influence by external devices, power supply circuit malfunction, unit body malfunction

CAUTION: Before performing diagnosis, refer to "CAUTION" in "General Description". Ref. to COCKPIT CONTROL (DIAGNOSTICS)>GENERAL DESCRIPTION>CAUTION .

Wiring diagram:

Audio and navigation system Ref. to WIRING SYSTEM>AUDIO AND NAVIGATION SYSTEM>WIRING DIAGRAM .

Courtesy of SUBARU OF AMERICA, INC.

CHECK OPERATION PROCEDURE .
Ask how the user operates when the system is reset, and perform using the same procedure.

Is the check result OK?

Yes: Currently no failure is found.

No: Go to 2.
CHECK SOFTWARE VERSION .
Check the firmware of the cockpit control module.

Is the firmware the latest?

Yes: Go to 3.

No: Update the firmware to the latest and reproduce the failure, and then perform the diagnosis again.
CHECK BATTERY .
Check the battery. Ref. to STARTING/CHARGING SYSTEMS (H4DO)>BATTERY>INSPECTION .

Is the check result OK?

Yes: Go to 4.

No: Charge or replace the battery.
CHECK ENVIRONMENTAL CONDITION .
Check if any external devices which emit strong electromagnetic waves and noises, such as a radio antenna, is installed inside the vehicle.

Is the check result OK?

Yes: Go to 5.

No: Remove the external device to check the operation. If the fault is not fixed: Go to 2.
CHECK CONNECTOR .
Check the connecting condition of the cockpit control module connector.

Is the check result OK?

Yes: Go to 6.

No: Connect the connector securely. Or repair the poor contact of connector.
CHECK CONNECTOR .
Check the harnesses, connectors or terminals that are connected to the cockpit control module for poor contact.

Is the check result OK?

Yes: Go to 7.

No: Repair or replace the harness.
CHECK POWER SUPPLY VOLTAGE .
1. Disconnect the connector (i102) of the cockpit control module.
2. Turn the ignition switch to ON.
3. Using the tester, measure the voltage between cockpit control module connector (i102) and chassis ground.
  Connector & terminal
  
  (i102) No. 3 (+) - Chassis ground (-):
  
  (i102) No. 4 (+) - Chassis ground (-):
  
  (i102) No. 9 (+) - Chassis ground (-):
Is the voltage 10 V or more?

Yes: Go to 9.

No: Go to 8.
CHECK HARNESS (POWER SUPPLY) (OPEN CIRCUIT) .
1. Turn the ignition switch to OFF.
2. Using the tester, measure the resistance between cockpit control module connector (i102) and F/B or M/B while shaking the harness.
  Connector & terminal
  
  (i102) No. 3 - F/B fuse No. 9:
  
  (i102) No. 4 - M/B fuse No. 24:
  
  (i102) No. 9 - F/B fuse No. 33:
Is the resistance 1 Ω or less?

Yes: Go to 9.

No: Repair or replace the open circuit of harness.
CHECK OPEN CIRCUIT IN HARNESS (GROUND) .
Using the tester, measure the resistance between cockpit control module connector (i102) and chassis ground while shaking the harness.

Connector & terminal

(i102) No. 7 - Chassis ground:

Is the resistance 1 Ω or less?

Yes: Go to 10.

No: Repair or replace the open circuit of harness.
CHECK UNIT OPERATION .
1. Connect all connectors.
2. Turn the ignition switch to ACC and the power supply switch of the unit to ON.
Is the reset eliminated?

Yes: Currently no failure is found.

No: Replace the cockpit control module. Ref. to ENTERTAINMENT & MONITORING>COCKPIT DISPLAY .