SFI SYSTEM, Diagnostic DTC:U1000 and U131F

DTC Code DTC Name
U1000 Manufacturer Controlled DTC
U131F Clock Default on the Main / Safety Microcontroller

DESCRIPTION

Refer to DTC P1506.

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DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

U1000

Manufacturer Controlled DTC

ECM cannot send signals via CAN communication.

ECM

Comes on

DTC stored

U131F

Clock Default on the Main / Safety Microcontroller

ECM internal malfunction (CAN communication error).

ECM

Comes on / Does not come on

DTC stored

PROCEDURE

  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC U1000 OR U131F)

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: System Select / Health Check.

    5. Check for DTCs.

      Result

      Result

      Proceed to

      DTC U1000 or U131F is output

      A

      DTC U1000 or U131F and other DTCs are output

      B
      Tip:

      If any DTCs other than U1000 or U131F are output, troubleshoot those DTCs first.

    A

    REPLACE ECM

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    B

    GO TO DTC CHART