Switching From Seat Heater To Seat Ventilation Is Not Possible (Display Does Not Change Either)

Trouble symptom: 

The display on the center information display remains as "seat heater operation in progress", even if the seat ventilation switch is touched. Does not change to "ventilation operation in progress".

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 SEAT SPECIFICATION  .

   Check the vehicle specification.

   Is this vehicle equipped with seat ventilation?

   Yes:  Go to  2 .

   No:  Switching to seat ventilation is not possible.

2. CHECK SEAT VENTILATION SWITCH DISPLAY  .
   1. Turn the ignition switch to ON.
   2. Touch the seat indicator on the center information display.
   3. Check if the seat ventilation switch is displayed under the seat heater switch.

      Is the seat ventilation switch displayed?

      Yes:  Go to  3 .

      No:  Ref. to VENTILATION SEAT (DIAGNOSTICS)>DIAGNOSTICS WITH PHENOMENON>INSPECTION>SEAT VENTILATION SWITCH IS NOT DISPLAYED .

3. 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  4 .

      No:  Repair the connector.

4. 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  5 .

5. CHECK DATA MONITOR  .
   1. Activate the seat heater.
   2. Touch the seat ventilation 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)
      • Seat Ventilation Operation Steps(Driver's)
      • Seat Ventilation Operation Steps(Passenger's)

      Is the seat heater level [OFF], and is the seat ventilation level at [HIGH]?

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

      Yes:  Perform the inspection according to the [Cockpit Control] diagnosis. Ref. to COCKPIT CONTROL (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE>PROCEDURE .

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