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Diagnosis Procedure
1.CHECK DTC
With M.U.T.-III SE
  1. Change the power supply mode of the electric motor switch to ON (READY indicator: ON).
  2. Check “Self-diagnosis” of “HVAC” using M.U.T.-III SE.
  3. Check following DTC.
    DTCItems
    (M.U.T.-III SE screen items)
    		Reference
    U1CA6-02Front right seat heater communicationDTC Description
    U1CA7-02Front left seat heater communicationDTC Description
    U1CA8-02Rear right seat heater communicationDTC Description
    U1CA9-02Rear left seat heater communicationDTC Description
Is DTC detected?
Perform DTC diagnosis procedure that is detecting.
Replace A/C amp. Refer to Removal and Installation.