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

DTC Code DTC Name
B1499/99 Multiplex Communication Circuit

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

WIRING DIAGRAM

A017G91E01

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK DTC OUTPUT


    1. Clear the DTC Click here.

    2. Check for DTC Click here.

      OK
      DTC B1499/99 is not output

    NG

    GO TO CAN COMMUNICATION SYSTEM Click here

    OK

    USE SIMULATION METHOD TO CHECK Click here