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Home >> Subaru >> 2019 >> Ascent Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Memory Modules >> Power Seat Memory System (Diagnostics) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC B2604: Power Seat Memory EEPROM

DTC B2604: Power Seat Memory EEPROM

DTC detecting condition: 

When malfunction occurs in writing/reading the memory of power seat control module.

Trouble symptom: 

Seat operation is possible with manual operation, but not with memory function.

CAUTION: Before performing diagnosis, refer to "CAUTION" in "General Description". Ref. to POWER SEAT MEMORY (DIAGNOSTICS)>GENERAL DESCRIPTION>CAUTION .
  1. CHECK DTC. 
    1. Turn the ignition switch to ON.
    2. Read the DTC of [Power Seat Memory] using the Subaru Select Monitor. Ref. to POWER SEAT MEMORY (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .

      Is DTC B2604 displayed? (Current malfunction)

      YES 

      Replace the power seat control module. Ref. to SEATS>POWER SEAT SYSTEM .

      NO  : Even if DTC is displayed, the circuit has returned to a normal condition at this time.

      Reproduce the failure, and perform the diagnosis again.

      NOTE: In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.