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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]

    Is DTC displayed?

    Yes  : Perform the diagnosis for the displayed DTCs.

    No  : Go to  2.

  2. CHECK POWER SUPPLY CIRCUIT  .

    Display data of the following items using Subaru Select Monitor. Ref. to COMMON (DIAGNOSTICS)>DATA MONITOR

    • [Front Relay Control Module]
      • [BATT Voltage (Control)]
      • [BATT Voltage (BACKUP)]
      • [IGN Voltage]
    • [Body control]
      • [BATT voltage (control)]
      • [BATT voltage (BACKUP)]
      • [IGN voltage]

    Is the voltage 9 - 16 V?

    Yes  : Go to  3.

    No  : Check the harnesses of the battery, fuse, connector and power supply circuit. If there is no abnormality, replace the front relay control module or the body integrated unit.

  3. CHECK BODY INTEGRATED UNIT SETTING  .

    Using the Subaru Select Monitor, check setting of [Auto A/C Setting]. Ref. to BODY CONTROL (DIAGNOSTICS)>CUSTOMIZE

    Is it set to [Support]?

    Yes  : Go to  4.

    No  : Change the customize setting to [Support].

  4. 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  5.

    No  : Check the harnesses of the heat wire, relay and output circuit. If there is no abnormality, replace the front relay control module.

  5. CHECK DATA MONITOR  .

    Using Subaru Select Monitor, display [Rr Defogger SW] in [Data monitor] of [Body Control]. Ref. to COMMON (DIAGNOSTICS)>DATA MONITOR

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

    Yes  : Go to  8.

    No  : Go to  6.

  6. CHECK INPUT CIRCUIT  .
    1. Switch to service diagnostics mode. Ref. to COCKPIT CONTROL (DIAGNOSTICS)>SERVICE DIAGNOSTICS MODE>OPERATION
    2. Select [Function Check]. Ref. to COCKPIT CONTROL (DIAGNOSTICS)>SERVICE DIAGNOSTICS 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  : Go to  7.

    No  : Inspect the rear defogger switch and input circuit.

  7. CHECK DTC  .
    1. Turn the ignition switch to ON.
    2. Read the DTC of [Cockpit Control] using the Subaru Select Monitor. Ref. to COMMON (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC)

    Is DTC displayed?

    Yes  : Perform the diagnosis for the displayed DTCs. Ref. to COCKPIT CONTROL (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC)>LIST

    No  : Go to  8.

  8. CHECK FRONT RELAY CONTROL MODULE  .

    Using Subaru Select Monitor, display [Rr Defogger output] in [Data monitor] of [Body Control]. Ref. to COMMON (DIAGNOSTICS)>DATA MONITOR

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

    Yes  : Replace the front relay control module. Ref. to BODY CONTROL/COMMUNICATION SYSTEM>FRONT RELAY CONTROL MODULE

    No  : Replace the body integrated unit. Ref. to BODY CONTROL/COMMUNICATION SYSTEM>BODY INTEGRATED UNIT

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