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Home >> Subaru >> 2017 >> Crosstrek Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Security And Locks - Keyless Access (W/Push Button Start) (Diagnostics) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC B1577: IMM Control Module EEPROM >> Except For C0 And C5 Models
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Except For C0 And C5 Models

DTC detecting condition: 

Step Check Yes No
1 CHECK DTC. 
  1. Turn the ignition switch to ON.
  2. Perform the clear memory operation of ECM. Ref. to Clear Memory Mode .
  3. Turn the ignition switch to OFF.
  4. Remove and install the battery.
  5. Turn the ignition switch to ON.
  6. After 5 seconds or more, read DTC. Ref. to Read Diagnostic Trouble Code (DTC) .
 Is DTC B1577 displayed? Replace the keyless access Control Module. Ref. to Keyless Access Control Module . Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.
NOTE: In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.
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