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 brake stroke simulator cylinder 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

  • Harness or connector

  • 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

A01H1E7E04

INSPECTION PROCEDURE

Note

When replacing the skid control ECU, perform the following operations:


  • Initialization of linear solenoid valve and calibration Click here

  • Yaw rate and acceleration sensor zero point calibration Click here

PROCEDURE


  1. INSPECT BRAKE STROKE SIMULATOR CYLINDER


    1. A01H1FDE04

      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
      for RHD C

    B

    REPLACE BRAKE STROKE SIMULATOR CYLINDER SUB-ASSEMBLY Click here

    C

    REPLACE BRAKE STROKE SIMULATOR CYLINDER SUB-ASSEMBLY Click here

    A

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


    1. A01GW5QE04

      Disconnect the A19 ECU connector.

    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 power 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
      for RHD C

    B

    REPLACE SKID CONTROL ECU Click here

    C

    REPLACE SKID CONTROL ECU Click here

    A

    USE SIMULATION METHOD TO CHECK Click here