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AIR CONDITIONING SYSTEM (for Automatic Air Conditioning System), Diagnostic DTC:B1499/99

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DTC Code DTC Name
B1499/99 Multiplex Communication Circuit
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DESCRIPTION

The air conditioning amplifier communicates data with the ECM and combination meter through the CAN communication system.

DTC No. DTC Detection Condition Trouble Area
B1499/99 Open in CAN communication line

  • Air conditioning amplifier

  • ECM

  • Combination meter

  • CAN communication line
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WIRING DIAGRAM

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INSPECTION PROCEDURE

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PROCEDURE


  1. Click here

    CHECK DTC OUTPUT


    1. Clear the DTC (Click here).

    2. Check for DTC (Click here).

      OK
      DTC B1499/99 is not output

  2. Click here

    GO TO CAN COMMUNICATION SYSTEMClick here

  3. Click here

    USE SIMULATION METHOD TO CHECKClick here