LEMON Manuals: Even more car manuals for everyone
Home >> Subaru >> 2025 >> Outback Base >> Repair and Diagnosis >> Body & Frame >> Windows >> Window Glass & Mirrors >> Rear Window Defogger System >> Inspection >> Check With SUBARU Select Monitor

Check With SUBARU Select Monitor

  1. CHECK DTC  .
    1. Turn the ignition switch to ON.
    2. Read DTCs of the following items using the Subaru Select Monitor. Ref. to LAN SYSTEM (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .
    • [Body Control]
    • [Front Relay Control Module]
    • [Cockpit control]
    • [Air Conditioner]

    Is DTC displayed?

    Yes:  Perform a check according to the DTC.

    No:  Go to  2.

  2. CHECK BODY INTEGRATED UNIT SETTING  .

    Check the setting of [Auto A/C Setting].

    Is it set to [Support]?

    Yes:  Go to  3.

    No:  Change the customize setting to [Support].

  3. CHECK SWITCH  .

    Operate the rear defogger switch on the center information display.

    Does the rear defogger switch light illuminate or go off corresponding to the switch operation?

    Yes:  Go to  4.

    No:  Go to  8.

  4. CHECK POWER SUPPLY CIRCUIT  .
    1. Display the data of [BATT Voltage (Control)], [BATT Voltage (BACKUP)] and [IGN Voltage] for [Front Relay Control Module] using Subaru Select Monitor.
    2. Display the data of [BATT voltage (control)], [BATT voltage (BACKUP)] and [IGN voltage] for [Body Control] using Subaru Select Monitor.

    Is the voltage 9 - 16 V?

    Yes:  Go to  5.

    No:  Check the harnesses of the battery, fuse, connector and power supply circuit.

  5. CHECK REAR DEFOGGER SYSTEM OPERATION  .

    Check the rear defogger system operation. Ref. to FRONT RELAY CONTROL MODULE (DIAGNOSTICS)>ACTIVE TEST .

    Does the rear defogger system operate normally?

    Yes:  Go to  6.

    No:  Check the harnesses of the heat wire, relay and output circuit.

  6. CHECK FRONT RELAY CONTROL MODULE  .

    Using Subaru Select Monitor, display [R Defogger Output]. Ref. to FRONT RELAY CONTROL MODULE (DIAGNOSTICS)>DATA MONITOR .

    Does the display change between [OFF] ←→ [ON], when the rear defogger switch is operated?

    Yes:  Replace the front relay control module.

    No:  Go to  7.

  7. CHECK BODY INTEGRATED UNIT  .

    Using Subaru Select Monitor, display [Rr Defogger output]. Ref. to COCKPIT CONTROL (DIAGNOSTICS)>DATA MONITOR .

    Does the display change between [OFF] ←→ [ON], when the rear defogger switch is operated?

    Yes:  Replace the front relay control module.

    No:  Replace the body integrated unit.

  8. CHECK INPUT CIRCUIT  .
    1. Switch to dealership mode. Ref. to COCKPIT CONTROL (DIAGNOSTICS)>DEALERSHIP MODE>OPERATION>PROCEDURE TO SWITCH TO DEALERSHIP MODE .
    2. Select [Function Check]. Ref. to COCKPIT CONTROL (DIAGNOSTICS)>DEALERSHIP MODE>OPERATION>SERVICE INSPECTION .
    3. Check [Rr DEF] and [Push] are displayed when the rear defogger switch is pressed.
    4. Check [Push] is switched to [Release] when the rear defogger switch is released.

    Does it operate normally?

    Yes:  The circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the inspection again.

    No:  Replace the center information display.

scientia non olet · About LEMON Manuals