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Reset ICS (Learned) Tables in the ECM

Discussion in 'Engine' started by navylife59, Sep 15, 2010.

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  1. navylife59

    navylife59 Super Moderator Staff Member

    Mar 22, 2006
    Emory, Texas or Gretna, LA
    When you need to reset your ECM, you can perform either one of the following operations:
    (1) Disconnect the negative (-) battery cable for more than 1 minute.
    (2) Remove the EFI and ETCS fuses from the relay block located inside the engine compartment for more than 1 minute.


    Option two can be easily performed without tools.

    When the negative battery terminal is disconnected during inspection or repairs, the ISC (Idle Speed Control) learning values are cleared. The ISC learning must be performed by warming up the engine and idling for 5
    minutes with the ECT at 75°C (167°F) or more because DTCs cannot be detected with the ISC learning values cleared.


    When disconnecting the battery cable, perform the INITIALIZE procedure.
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