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Keyless Access System

KEYLESS ACCESS SYSTEM DIAGNOSTIC TROUBLE CODE IDENTIFICATION

DTC Item Content of diagnosis Note
U0073 CONTROL MODULE COMMUNICATION BUS OFF Detected when CAN line abnormality is detected. <Ref. to DTC U0073 CONTROL MODULE COMMUNICATION BUS OFF , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
U0100 LOST COMMUNICATION WITH ECM/PCM "A" Detected when CAN data from the engine control module (ECM) does not arrive. <Ref. to DTC U0100 LOST COMMUNICATION WITH ECM/PCM "A" , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
U0101 LOST COMMUNICATION WITH TCM Detected when CAN data from TCM does not arrive. <Ref. to DTC U0101 LOST COMMUNICATION WITH TCM , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
U0122 LOST COMMUNICATION WITH VEHICLE DYNAMICS CONTROL MODULE Detected when CAN data from VDC does not arrive. <Ref. to DTC U0122 LOST COMMUNICATION WITH VEHICLE DYNAMICS CONTROL MODULE , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
U0140 LOST COMMUNICATION WITH BODY CONTROL MODULE Detected when CAN data from BIU does not arrive. <Ref. to DTC U0140 LOST COMMUNICATION WITH BODY CONTROL MODULE , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
U0155 LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IPC) CONTROL MODULE Detected when CAN data from meter does not arrive. <Ref. to DTC U0155 LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IPC) CONTROL MODULE , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
U0401 INVALID DATA RECEIVED FROM ECM/PCM "A" Detected when there is malfunction in CAN data from the engine control module (ECM). <Ref. to DTC U0401 INVALID DATA RECEIVED FROM ECM/PCM "A" , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
U0422 INVALID DATA RECEIVED FROM BODY CONTROL MODULE Detected when CAN data from BIU is abnormal. <Ref. to DTC U0422 INVALID DATA RECEIVED FROM BODY CONTROL MODULE , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
B1242 WIRELESS TUNER When short circuit occurs in harness between Keyless Access Control Module and receiver. <Ref. to DTC B1242 WIRELESS TUNER , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
B2271 IGN RELAY CONTROL CIRCUIT
  • When malfunction is detected in IG1 and IG2 drive circuits in the Keyless Access Control Module.
  • When malfunction is detected in IG hold circuit in the Keyless Access Control Module.
 <Ref. to DTC B2271 IGN RELAY CONTROL CIRCUIT , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
B2274 ACC RELAY CONTROL CIRCUIT When malfunction is detected in ACC relay drive circuit in the Keyless Access Control Module or external circuit. <Ref. to DTC B2274 ACC RELAY CONTROL CIRCUIT , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
B2275 ENGINE START REQUEST CONTROL CIRCUIT
  • When malfunction is detected in engine start permission signal output circuit in the Keyless Access Control Module.
  • When malfunction is detected in external engine start permission signal circuit.
 <Ref. to DTC B2275 ENGINE START REQUEST CONTROL CIRCUIT , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
B2276 ACC RELAY OFF SIGNAL When input error occurs in accessory relay cut input signal of Keyless Access Control Module. <Ref. to DTC B2276 ACC RELAY OFF SIGNAL , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
B2277 SUBMERGING CIRCUIT When the water-submersion detection circuit integrated into the Keyless Access Control Module detects the water submersion. <Ref. to DTC B2277 SUBMERGING CIRCUIT , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
B2282 VEHICLE SPEED SIGNAL CORRELATION When the vehicle speed signal transmitted from VDC via solid line and the vehicle speed signal transmitted from VDC via CAN communication line do not match. <Ref. to DTC B2282 VEHICLE SPEED SIGNAL CORRELATION , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
B2283 VEHICLE SPEED SENSOR Either of the following malfunctions is detected. (Vehicle speed sensor failure is detected.)
  • Vehicle speed signal failure detection 1: Excessive deceleration detection
  • Vehicle speed signal failure detection 2: Engine speed interlock detection
 <Ref. to DTC B2283 VEHICLE SPEED SENSOR , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
B2284 BRAKE SIGNAL CORRELATION When the brake signal transmitted via solid line and the brake signal transmitted via CAN communication line do not match. <Ref. to DTC B2284 BRAKE SIGNAL CORRELATION , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
B2285 STEERING LOCK POSITION SIGNAL CORRELATION When the steering lock position signal transmitted from the steering lock CM via solid line and the steering lock position signal transmitted via LIN communication system do not match. <Ref. to DTC B2285 STEERING LOCK POSITION SIGNAL CORRELATION , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
B2286 ENGINE SPEED SIGNAL(WITHOUT Auto Start Stop) When the engine speed signal transmitted from ECM via solid line and the engine speed signal transmitted from ECM via CAN communication line do not match. <Ref. to DTC B2286 ENGINE SPEED SIGNAL(WITHOUT AUTO START STOP) , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
B2779 REMOTE CONTROL ENGINE STARTER COLLATION When the Keyless Access Control Module does not respond to engine start even when the remote control engine starter is ON, or when there is a code mismatch. <Ref. to DTC B2779 REMOTE CONTROL ENGINE STARTER COLLATION , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
B2781 STEERING LOCK CM CONTROL CIRCUIT
  • When malfunction is detected in lock/unlock position detection sensor.
  • When the open or short circuit in the steering lock motor drive circuit is detected.
 <Ref. to DTC B2781 STEERING LOCK CM CONTROL CIRCUIT , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
B2782 STEERING LOCK DRIVE REQUEST SIGNAL CORRELATION When the open or short circuit in the steering lock motor power supply circuit is detected. <Ref. to DTC B2782 STEERING LOCK DRIVE REQUEST SIGNAL CORRELATION , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
B2784 ANTENNA CIRCUIT (PUSH ENGINE SWITCH) When open or short circuit occurs in the antenna coil. <Ref. to DTC B2784 ANTENNA CIRCUIT (PUSH ENGINE SWITCH) , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
B2785 LIN COMMUNICATION When the Keyless Access Control Module detects the collation system LIN bus communication error three times in a row. <Ref. to DTC B2785 LIN COMMUNICATION , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
B2786 STEERING LOCK CM COMMUNICATION When communication between Keyless Access Control Module and steering lock CM is interrupted for a set amount of time. <Ref. to DTC B2786 STEERING LOCK CM COMMUNICATION , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
B2788 IGN SIGNAL CORRELATION (STEERING LOCK CM) When mismatch occurs in the IG1 input of the steering lock CM between LIN communication line input and solid line input. <Ref. to DTC B2788 IGN SIGNAL CORRELATION (STEERING LOCK CM) , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
B2789 ID CODE BOX COMMUNICATION
  • When communication between Keyless Access Control Module and ID code box is interrupted for a set amount of time.
  • Open or short circuit in the wiring harness between Keyless Access Control Module and ID code box.
 <Ref. to DTC B2789 ID CODE BOX COMMUNICATION , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
B278A PUSH ENGINE SWITCH POWER SUPPLY CIRCUIT When the power supply circuit of the push button ignition switch is shorted to ground. <Ref. to DTC B278A PUSH ENGINE SWITCH POWER SUPPLY CIRCUIT , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
B278D ID CODE BOX JUDGMENT CIRCUIT Either of the following malfunctions is detected.
  • ID code box existence judgment status says NO, but the ID code box existence judging circuit in the solid line detects the connection.
  • ID code box existence judgment status says NO, but the communication signal from ID code box is received.
  • ID code box existence judging circuit in the solid line detects no connection, but the communication signal from ID code box is received. (During a new registration)
 <Ref. to DTC B278D ID CODE BOX JUDGMENT CIRCUIT , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
B2790 ID CODE BOX CIRCUIT An error has occurred inside the ID code box. <Ref. to DTC B2790 ID CODE BOX CIRCUIT , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
B27A1 DRIVER SIDE EXTERNAL ANTENNA OPEN When open circuit occurs in the harness between Keyless Access Control Module and driver's side front door outer handle. <Ref. to DTC B27A1 DRIVER SIDE EXTERNAL ANTENNA OPEN , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
B27A2 PASSENGER SIDE EXTERNAL ANTENNA OPEN When open circuit occurs in the harness between Keyless Access Control Module and passenger's side front door outer handle. <Ref. to DTC B27A2 PASSENGER SIDE EXTERNAL ANTENNA OPEN , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
B27A5 FRONT INTERNAL ANTENNA OPEN When open circuit occurs in the harness between Keyless Access Control Module and front interior antenna. <Ref. to DTC B27A5 FRONT INTERNAL ANTENNA OPEN , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
B27A6 REAR INTERNAL ANTENNA OPEN When open circuit occurs in the harness between Keyless Access Control Module and rear interior antenna. <Ref. to DTC B27A6 REAR INTERNAL ANTENNA OPEN , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
B27A7 TRUNK/REAR GATE INTERNAL ANTENNA OPEN When open circuit occurs in the harness between Keyless Access Control Module and rear interior antenna. <Ref. to DTC B27A7 TRUNK/REAR GATE INTERNAL ANTENNA OPEN , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
B27A8 TRUNK/REAR GATE EXTERNAL ANTENNA OPEN When open circuit occurs in the harness between Keyless Access Control Module and rear exterior antenna. <Ref. to DTC B27A8 TRUNK/REAR GATE EXTERNAL ANTENNA OPEN , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
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