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Home >> Lexus >> 2008 >> LS 600hL >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Cellular Communication >> LEXUS Link System >> DTC 2-1: EEPROM Communication Error; DTC 2-2: EEPROM Checksum Error >> Inspection Procedure
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Inspection Procedure

  1. RESET MAYDAY ECU 
    1. Exit diagnosis mode and wait for 10 seconds.
    2. Disconnect the cable from the negative (-) battery terminal.
      NOTE:
      • After the power switch is turned OFF, the HDD navigation system requires approximately 6 minutes to record various types of memory and settings. As a result, after turning the power switch OFF, wait 6 minutes or more before disconnecting the cable from the negative (-) battery terminal.
      • When disconnecting the cable, some systems need to be initialized after the cable is reconnected (see INITIALIZATION ).
    3. Reconnect the cable to the negative (-) battery terminal, and wait for 10 seconds.
      NOTE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected (see INITIALIZATION ).
    4. Turn the power switch ON (IG), and then check for the current DTC and historic DTC again (see DTC CHECK / CLEAR ).

    Result 

    RESULT CHART

    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  (See DTC CHECK / CLEAR )

    A: Go to next step 

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

      OK: System operates normally. 

      NG: 

      System does not connect to LEXUS Link call center. (Current DTC 2-1 or 2-2 exists.) 

      NG: REPLACE MAYDAY ECU TOGETHER WITH MAYDAY BATTERY AND THEN PERFORM REGISTRATION 

      OK: END 

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