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SMART ENTRY AND START SYSTEM, Diagnostic DTC:B2277

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DTC Code DTC Name
B2277 Detecting Vehicle Submersion
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DESCRIPTION

This DTC is output if the submersion circuit monitor inside the main body ECU detects that the vehicle is submerged in water.

Tip:

If the main body ECU is replaced with a new one while the negative (-) battery terminal is connected, the power source mode will be in IG-ON mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.

After the main body ECU is replaced, perform the registration procedure for the engine immobiliser system.

DTC No. DTC Detection Condition Trouble Area
B2277 Submersion circuit monitor inside main body ECU detects that vehicle is submerged in water Main body ECU (Instrument panel junction block)
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INSPECTION PROCEDURE

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PROCEDURE


  1. Click here

    CHECK FOR WATER DAMAGE


    1. Check the main body ECU, peripheral components, and wire harnesses for traces of water.

      OK
      There are no traces of water.

  2. Click here

    CHECK DTC OUTPUT


    1. Delete the DTCs (Click here).

      Tip:

      After all DTCs are cleared, check if the trouble occurs again 270 to 330 seconds after the engine switch is turned on (IG).

    2. Check for DTCs again.

      OK
      No DTC is output.

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    USE SYMPTOM METHOD TO CHECKClick here

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    TAKE APPROPRIATE MEASURES AGAINST CAUSE OF WATER DAMAGE AND REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)

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    REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)