ELECTRONICALLY CONTROLLED BRAKE SYSTEM, Diagnostic DTC:C1247, C1392

DTC Code DTC Name
C1247 Stroke Sensor
C1392 Zero Point Calibration of Stroke Sensor undone

DESCRIPTION

The brake pedal stroke sensor assembly sends a signal about the pedal stroke to the skid control ECU (brake booster with master cylinder assembly).

DTC No. Detection Item INF Code DTC Detection Condition Trouble Area Note
C1247 Stroke Sensor

211

212

213

214

215

216

217

  • INF Code: 211


    • The sensor supply voltage (VCSK) is 4.7 V or less, or 5.3 V or more for 0.2 seconds or more.

  • INF Code: 212


    • The sensor output voltage 1 (SKS1) is less than 0.3 V, or 4.7 V or more for 0.2 seconds or more.

  • INF Code: 213


    • The sensor output voltage 2 (SKS2) is less than 0.3 V, or 4.7 V or more for 0.2 seconds or more.

  • INF Code: 214


    • The difference between the current value and previous value of the sensor output voltage 1 (SKS1) is 8.5% or more for 0.2 seconds or more.

  • INF Code: 215


    • The difference between the current value and previous value of the sensor output voltage 2 (SKS2) is 8.5% or more for 0.2 seconds or more.

  • INF Code: 216


    • The difference in change between sensor output voltage 1 (SKS1) and sensor output voltage 2 (SKS2) is excessively large for 0.2 seconds or more.

      (The comparison value of SKS1 and SKS2 is invalid.)

  • INF Code: 217


    • Sensor data is invalid for 0.2 seconds or more.

      (The sensor data of SKS1 and SKS2 is invalid.)

  • INF Code: 211


    • Open or short in brake pedal stroke sensor assembly power supply circuit

    • Improperly connected connector, deformation or corrosion of terminals

    • Skid control ECU (brake booster with master cylinder assembly)

  • INF Code: 212, 213, 214, 215, 216, 217


    • Open or short in wire harness

    • Improperly connected connector, deformation or corrosion of terminals

    • Brake pedal stroke sensor assembly

 Electronically controlled brake system DTC
C1392 Zero Point Calibration of Stroke Sensor undone 1124

The brake pedal stroke sensor assembly zero point calibration is not performed.

(Normal brake pedal stroke sensor assembly zero point not memorized.)

Normal brake pedal stroke sensor assembly zero point not memorized.

(Linear solenoid valve offset learning is not performed or Test Mode is not performed or not complete.)

Electronically controlled brake system DTC

Tech Tips

During test mode, related DTCs are cleared.

WIRING DIAGRAM

A003M4DE05
*a Hall IC1
*b Hall IC2
*c Brake Pedal Stroke Sensor Assembly
*d Skid Control ECU (Brake Booster with Master Cylinder Assembly)

CAUTION / NOTICE / HINT

Note

After replacing the skid control ECU (brake booster with master cylinder assembly) or brake pedal stroke sensor assembly, perform linear solenoid valve offset learning, ABS holding solenoid valve learning, yaw rate and acceleration sensor zero point calibration and system information memorization after performing "Reset Memory".

Click here

Tech Tips

Check the condition of each related circuit connector before troubleshooting.

Click here

PROCEDURE


  1. CHECK BRAKE PEDAL


    1. Check that the brake pedal and the brake pedal stroke sensor assembly are properly installed and that the pedal can be depressed normally.

    2. Check and adjust the brake pedal height.

      for LHD: Click here

      for RHD: Click here

    3. Adjust the brake pedal stroke sensor assembly.

      for LHD: Click here

      for RHD: Click here

      Result
      Proceed to
      NEXT

    NEXT

  2. CHECK HARNESS AND CONNECTOR (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY - BRAKE PEDAL STROKE SENSOR ASSEMBLY)


    1. Make sure that there is no looseness at the locking part and the connecting part of the connectors.

      OK
      The connector is securely connected.

    2. Disconnect the A32 skid control ECU (brake booster with master cylinder assembly) connector.

    3. Disconnect the A36 brake pedal stroke sensor assembly connector.

    4. Check both the connector case and the terminals for deformation and corrosion.

      OK
      No deformation or corrosion.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A32-13 (SKG1) - A36-5 (SKG) Always Below 1 Ω
      A32-13 (SKG1) or A36-5 (SKG) - Body ground Always 10 kΩ or higher
      A32-17 (SKS1) - A36-6 (SKS1) Always Below 1 Ω
      A32-17 (SKS1) or A36-6 (SKS1) - Body ground Always 10 kΩ or higher
      A32-19 (SKS2) - A36-1 (SKS2) Always Below 1 Ω
      A32-19 (SKS2) or A36-1 (SKS2) - Body ground Always 10 kΩ or higher
      A32-21 (VSK2) - A36-2 (VSK2) Always Below 1 Ω
      A32-21 (VSK2) or A36-2 (VSK2) - Body ground Always 10 kΩ or higher
      A32-25 (VSK1) - A36-4 (VCSK) Always Below 1 Ω
      A32-25 (VSK1) or A36-4 (VCSK) - Body ground Always 10 kΩ or higher
      A32-33 (SKG2) - A36-3 (SKG2) Always Below 1 Ω
      A32-33 (SKG2) or A36-3 (SKG2) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY (SENSOR OUTPUT)


    1. A003OT2C45
      *a

      Front view of wire harness connector

      (to Brake Pedal Stroke Sensor Assembly)

      Reconnect the A32 skid control ECU (brake booster with master cylinder assembly) connector.

    2. Turn the power switch on (IG).

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A36-4 (VCSK) - A36-5 (SKG) Power switch on (IG) 4.84 to 5.16 V
      A36-2 (VSK2) - A36-3 (SKG2) Power switch on (IG) 4.84 to 5.16 V
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE BRAKE PEDAL STROKE SENSOR ASSEMBLY for LHD: Click here
    REPLACE BRAKE PEDAL STROKE SENSOR ASSEMBLY for RHD: Click here

    NG

    REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY for LHD: Click here
    REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY for RHD: Click here