ELECTRONICALLY CONTROLLED BRAKE SYSTEM, Diagnostic DTC:C1319/35

DTC Code DTC Name
C1319/35 SCSS Changeover Solenoid Malfunction

DESCRIPTION

The stroke simulator solenoid (SCSS) generates pedal reactive effort during electronically controlled brake system control. If one or more of the front wheels loses brake booster function, the simulator operation is prohibited.

DTC Code Information Code DTC Detection Condition Trouble Area
C1319/35 71

When either of the following is detected:


  1. SCSS drive circuit is malfunctioning for 0.05 seconds or more.

  2. Short to power supply in SCSS.

  • Brake stroke simulator cylinder

  • Wire harness

  • Skid control ECU
↑ 72 Current leaks for 0.05 seconds or more when SCSS is off. ↑
↑ 73 Open circuit in SCSS continues for 0.05 seconds or more. ↑
↑ 74 Overcurrent in SCSS continues for 0.05 seconds or more. ↑

WIRING DIAGRAM

A001C9AE03
*a SCSS
*b Brake Stroke Simulator Cylinder
*c Skid Control ECU

CAUTION / NOTICE / HINT

Note

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

PROCEDURE


  1. INSPECT BRAKE STROKE SIMULATOR CYLINDER SUB-ASSEMBLY


    1. A001BQOE07
      *1 Component without harness connected: (Brake Stroke Simulator Cylinder)
      *2 SCSS

      Disconnect the A22 cylinder connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      1 (BSR) - 2 (SCSS) Always 21.2 to 38 Ω
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    REPLACE BRAKE STROKE SIMULATOR CYLINDER SUB-ASSEMBLY (for LHD) Click here

    C

    REPLACE BRAKE STROKE SIMULATOR CYLINDER SUB-ASSEMBLY (for RHD) Click here

    A

  2. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - BRAKE STROKE SIMULATOR CYLINDER)


    1. Disconnect the A19 ECU connector.

      A001DZOE01
      *1 Front view of wire harness connector: (to Skid Control ECU)
      *2 Front view of wire harness connector: (to Brake Stroke Simulator Cylinder)
      *3 SCSS

    2. Disconnect the A22 cylinder connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      A19-31 (BSO3) - A22-1 (BSR) Always Below 1 Ω
      A19-21 (SS) - A22-2 (SCSS) Always Below 1 Ω
      A19-31 (BSO3) - Body ground Always 10 kΩ or higher
      A19-21 (SS) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. RECONFIRM DTC


    1. Clear the DTC Click here.

    2. Turn the engine switch on (IG).

    3. Check if the same DTC is recorded Click here.

      Tech Tips

      Reinstall the sensors, connectors, etc. and restore the vehicle to its prior condition before rechecking for DTCs.

      Result
      Result Proceed to
      DTC (C1319/35) is not output A
      DTC (C1319/35) is output (for LHD) B
      DTC (C1319/35) is output (for RHD) C

    A

    END

    B

    REPLACE SKID CONTROL ECU (for LHD) Click here

    C

    REPLACE SKID CONTROL ECU (for RHD) Click here