Seat Ventilation Does Not Turn Off, And Seat Heater Does Not Operate Either

Trouble symptom: 

The seat ventilation does not turn off, even if the seat heater switch is touched while the seat ventilation is operating. The seat heater does not operate either.

Trouble causes: 

• Seat ventilation control module failure
• A/C control module failure
• Seat ventilation circuit failure
• Seat heater circuit failure
• Center information display failure
• Cockpit control module failure
• Seat ventilation blower failure
• Seat heater failure

1. CHECK CONNECTOR  .
   1. Turn the ignition switch to OFF.
   2. Check connecting condition of the seat ventilation control module connector (St41), A/C control module connectors (i107) (i108), seat connectors (L57) (R57), coupling connectors (B43) (L51) (R51) (St21) (St22), heater connectors (St27) (St28), and blower connectors (St71) (St72).

      Is the check result OK?

      Yes:  Go to  2 .

      No:  Repair the connector.

2. CHECK DTC  .
   1. Turn the ignition switch to ON.
   2. Read the following DTCs using Subaru Select Monitor. Ref. to Ventilation Seat (Diagnostics)>Diagnostic Trouble Code (DTC) . Ref. to BODY CONTROL (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) . Ref. to AIR CONDITIONER (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) . Ref. to COCKPIT CONTROL (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .
      • Ventilation Seat
      • Body Control
      • Air Conditioner
      • Cockpit Control

      Are any DTCs displayed?

      Yes:  Perform the diagnosis for the displayed DTCs. Ref. to Ventilation Seat (Diagnostics)>Diagnostic Trouble Code (DTC) . Ref. to BODY CONTROL (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) . Ref. to AIR CONDITIONER (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) . Ref. to COCKPIT CONTROL (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .

      No:  Go to  3 .

3. CHECK SEAT VENTILATION OPERATION  .
   1. Start the engine.
   2. Touch the seat ventilation switch on the center information display.
   3. Check if the seat ventilation operation is normal.

      Is the seat ventilation operation normal?

      Yes:  Go to  4 .

      No:  Ref. to VENTILATION SEAT (DIAGNOSTICS)>Diagnostics with Phenomenon>INSPECTION>SEAT VENTILATION CANNOT BE OPERATED .

4. CHECK DATA MONITOR  .
   1. Operate the seat ventilation.
   2. Touch the seat heater switch.
   3. Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Ventilation Seat]. Ref. to Ventilation Seat (Diagnostics)>Data Monitor .
      • Seat Heater Operation Steps(Driver's)
      • Seat Heater Operation Steps(Passenger's)

      Is the seat ventilation level at [HIGH]?

      NOTE: Touching the seat heater switch several times changes the display as [HIGH] $Rr [MID] $Rr [LOW] $Rr [OFF] $Rr [HIGH] $Rr • • •

      Yes:  Ref. to VENTILATION SEAT (DIAGNOSTICS)>Diagnostics with Phenomenon>INSPECTION>SEAT HEATER CANNOT BE OPERATED .

      No:  Replace the seat ventilation control module. Ref. to SEATS>SEAT VENTILATION SYSTEM .