ANTI-LOCK BRAKE SYSTEM(for Type A) 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 light.

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 ignition switch from off to ON.

WIRING DIAGRAM

A01TDPXE15
*a Skid Control ECU (Brake Actuator Assembly)
*b CAN Communication Line
*c Power Steering ECU Assembly

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. Turn the ignition switch to ON.

    2. A01TB75C13
      *a Front view of DLC3

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      E11-12 (TS) - E11-4 (CG) Ignition switch ON 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)

    A01TB75C13
    *a Front view of DLC3

    1. Turn the ignition 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 parts.

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

    NG

    REPAIR OR REPLACE WIRE HARNESS OR POWER STEERING ECU ASSEMBLY

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


    1. Turn the ignition switch off.

    2. Disconnect the E30 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
      E11-12 (TS) - E30-6 (TS) Always Below 1 Ω
      E11-12 (TS) or E30-6 (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. A01TB75C12
      *a Front view of DLC3

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E11-4 (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)

    A01TB75C13
    *a Front view of DLC3

    1. Reconnect the E30 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 parts.

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

    NG

    REPLACE POWER STEERING ECU ASSEMBLY Click here