PRE-CRASH SAFETY SYSTEM, Diagnostic DTC:B2015, B2016, B2020, B2021, B2025, B2026, B2027, B2030, B2031, B2032, B2035, B2040, B2041, B2043, B2047

DTC Code DTC Name
B2015 Open in Right Side Upper MOS
B2016 Open in Right Side Lower MOS
B2020 Open in Left Side Upper MOS
B2021 Open in Left Side Lower MOS
B2025 Right Side Current Detection Circuit Malfunction Hi
B2026 Right Side Current Detection Circuit Malfunction Lo
B2027 Right Side Over-Current Malfunction
B2030 Left Side Current Detection Circuit Malfunction Hi
B2031 Left Side Current Detection Circuit Malfunction Lo
B2032 Left Side Over-Current Malfunction
B2035 Power Supply Relay Adherence Malfunction
B2040 EEPROM Malfunction
B2041 Fall of Raised Voltage
B2043 Fall of B+ Voltage
B2047 Seat Belt Control ECU Inner Circuit Malfunction

DESCRIPTION

The DTCs above are stored during seat belt control ECU self-diagnosis.

Tech Tips


  • When DTC B2015 or B2016 is detected, DTCs B2026 and B2027 will not be detected.

  • When DTC B2020 or B2021 is detected, DTCs B2031 and B2032 will not be detected.

DTC No. DTC Detection Condition Trouble Area

B2015

B2016

B2020

B2021

B2025

B2026

B2027

B2030

B2031

B2032

B2035

B2040

B2041

B2043

B2047

 While initial check is running and the engine switch is on (IG), the seat belt control ECU detects an internal malfunction for 1 second. Seat belt control ECU

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK DTC OUTPUT


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Pre-Crash / Trouble Codes.

    5. Clear the DTCs Click here.

    6. Turn the engine switch off.

    7. Turn the engine switch on (IG).

    8. Recheck for DTCs.

      OK
      DTCs are not output.

    NG

    REPLACE SEAT BELT CONTROL ECU Click here

    OK

    CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION) Click here