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Home >> Lexus >> 2007 >> GX 470 >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Cellular Communication >> LEXUS Link System >> DTC 2-1; 2-2: EEPROM Communication Error; EEPROM Checksum Error >> Inspection Procedure

Inspection Procedure

  1. RESET MAYDAY ECU ASSEMBLY 
    1. Exit diagnosis mode and wait for 10 seconds.
    2. Disconnect the cable from the negative (-) battery terminal, and wait for 1 minute.
    3. Reconnect the cable to the negative (-) battery terminal, and wait for 10 seconds.
    4. Turn the ignition switch ON, and then check for the current DTC again.

      Result 

    RESULT REFERENCE

    Result Proceed to
    Current DTC 2-1 or 2-2 exists A
    Historic DTC 2-1 or 2-2 exists B

    B: CLEAR HISTORIC DTC 

    A: Go to next step 

  2. CHECK MAYDAY ECU ASSEMBLY 
    1. Press the "SERVICES" button and check the LEXUS Link condition with the LEXUS Link call center.

      OK: 

      System operates normally. 

      NG: 

      Current DTC 2-1 or 2-2 exists. 

      NOTE: If replacement of the ECU is necessary, replace the mayday battery (backup battery) together with the ECU. After the replacement, register the ECU (See REGISTRATION  ).

      NG: REPLACE MAYDAY ECU ASSEMBLY (See  REMOVAL   ) 

    OK: END 

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