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Diagnostic Trouble Code Chart

HINT:

If a trouble code is displayed during the DTC check, check the circuit listed for the code in the table below (Proceed to the article listed for that circuit).

SMART KEY 

DIAGNOSTIC CHART

DTC No. See Detection Item Trouble Area
B1242  Wireless Door Lock Tuner Circuit Malfunction
  1. Tuner
  2. Luggage compartment tuner
  3. Wire harness
  4. Certification ECU
B2784  Antenna Coil Open / Short
  1. Engine switch
  2. Wire harness
  3. Certification ECU
B2785  Communication Malfunction between ECUs Connected by LIN
  1. Wire harness
  2. Steering lock actuator (Steering lock ECU)
  3. ID code box
  4. Power source control ECU
  5. Certification ECU
B2786  No Response from Steering Lock ECU
  1. Wire harness
  2. Steering lock actuator (Steering lock ECU)
  3. Certification ECU
B2789  No Response from ID BOX
  1. Wire harness
  2. ID code box
  3. Certification ECU
B278A Short to GND in Immobilizer System Power Source Circuit
  1. Wire harness
  2. Engine switch
  3. Certification ECU
B2790  ID BOX EEPROM Malfunction ID code box
B2791  Communication Condition Failure between ECM
  1. Wire harness
  2. ID code box
  3. ECM

ECM 

ECM REFERENCE CHART

DTC No. See Detection Item Trouble Area
B2799  Communication with Immobilizer
  1. Wire harness
  2. ID code box
  3. ECM
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