ELECTRONICALLY CONTROLLED BRAKE SYSTEM TS and CG Terminal Circuit

DESCRIPTION

Connecting terminals TS and CG of the DLC3 causes the ECU to display Test Mode DTCs by blinking the ABS warning, brake warning / yellow (minor malfunction) and slip indicator lights.

In Test Mode (signal check), a malfunction in a speed sensor that cannot be detected when the vehicle is stopped can be detected while driving.

Sensor check mode can be entered by connecting terminals TS and CG of the DLC3 and turning the power switch from off to on (IG).

WIRING DIAGRAM

B003XW7E02
*a Skid Control ECU Assembly
*b CAN Communication Line
*c Power Steering ECU Assembly

CAUTION / NOTICE / HINT

Note

When replacing the skid control ECU assembly, perform initialization and calibration of the linear solenoid valve.

Click here

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Check if CAN communication system DTCs are output.

      Click here

      Result
      Result Proceed to
      DTCs are not output. A
      DTCs are output. B

    B

    INSPECT CAN COMMUNICATION SYSTEM Click here

    A

  2. INSPECT DLC3


    1. B003YKPC62
      *a Front view of DLC3

      Turn the power switch on (IG).

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      K9-12 (TS) - K9-4 (CG) Power switch on (IG) 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (TS of DLC3 - POWER STEERING ECU ASSEMBLY) Click here

    OK

  3. CHECK POWER STEERING ECU ASSEMBLY (TS of DLC3 INPUT)


    1. B003YKPC62
      *a Front view of DLC3

      Turn the power switch off.

    2. Using SST, connect terminals TS and CG of the DLC3.

      SST
      09843-18040

    3. Check that the EPS warning light is blinking.

      OK
      The EPS warning light is blinking.

      Tech Tips

      If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step before replacing the parts.

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE SKID CONTROL ECU ASSEMBLY for LHD: Click here
    REPLACE SKID CONTROL ECU ASSEMBLY for RHD: Click here

    NG

    REPLACE POWER STEERING ECU ASSEMBLY for LHD: Click here
    REPLACE POWER STEERING ECU ASSEMBLY for RHD: Click here

  4. CHECK HARNESS AND CONNECTOR (TS of DLC3 - POWER STEERING ECU ASSEMBLY)


    1. Turn the power switch off.

    2. Disconnect the A19 power steering ECU assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K9-12 (TS) - A19-5 (TS) Always Below 1 Ω
      K9-12 (TS) or A19-5 (TS) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK HARNESS AND CONNECTOR (CG of DLC3 - BODY GROUND)


    1. B003YKPC63
      *a Front view of DLC3

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K9-4 (CG) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK POWER STEERING ECU ASSEMBLY (TS of DLC3 INPUT)


    1. B003YKPC62
      *a Front view of DLC3

      Reconnect the A19 power steering ECU assembly connector.

    2. Using SST, connect terminals TS and CG of the DLC3.

      SST
      09843-18040

    3. Check that the EPS warning light is blinking.

      OK
      The EPS warning light is blinking.

      Tech Tips

      If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step before replacing the parts.

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE SKID CONTROL ECU ASSEMBLY for LHD: Click here
    REPLACE SKID CONTROL ECU ASSEMBLY for RHD: Click here

    NG

    REPLACE POWER STEERING ECU ASSEMBLY for LHD: Click here
    REPLACE POWER STEERING ECU ASSEMBLY for RHD: Click here