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SEAT BELT SYSTEM, Diagnostic DTC:B201A14

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DTC Code DTC Name
B201A14 Seat Belt Motor Drive Power Supply Relay Circuit Short to Ground or Open
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DESCRIPTION

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Note
B201A14 Seat Belt Motor Drive Power Supply Relay Circuit Short to Ground or Open Short to ground or open circuit in seat belt control ECU power supply

  • Seat belt control ECU

  • Harness or connector

PCS Warning Light:

Blinks

 "Pre-Collision System Malfunction Visit Your Dealer" is displayed on the multi information display (in the combination meter assembly)
Table 1. *a from Auxiliary Battery *b PSB NO.1 *c Seat Belt Control ECU
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WIRING DIAGRAM

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PROCEDURE


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    CHECK HARNESS AND CONNECTOR (SEAT BELT CONTROL ECU - AUXILIARY BATTERY AND BODY GROUND)


    1. Disconnect the L59 seat belt control ECU connector.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      L59-12 (PGND) - Body ground Always Below 1 Ω

    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      L59-1 (+B) - Body ground Power switch off 11 to 14 V
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

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    CLEAR DTCs


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Seat Belt Control / Clear DTCs.


      1. Body Electrical > Seat Belt Control > Clear DTCs


    5. Check for DTCs by following the prompts on the GTS screen.

      Result
      Proceed to
      NEXT

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    CHECK FOR DTC


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Seat Belt Control / Trouble Codes.

    5. Check for DTCs and note any DTCs that are output.


      1. Body Electrical > Seat Belt Control > Trouble Codes


      OK
      DTC is not output
      Result
      Proceed to
      OK
      NG