VEHICLE STABILITY CONTROL SYSTEM, Diagnostic DTC:C1417

DTC Code DTC Name
C1417 High Power Supply Voltage Malfunction

DESCRIPTION

If a malfunction is detected in the power supply circuit, the skid control ECU (brake actuator assembly) stores this DTC and the fail-safe function prohibits ABS operation.

This DTC is stored when the +BS terminal voltage deviates due to a malfunction in a power supply or charging system circuit such as the battery or alternator circuit, etc.

DTC No.

DTC Detection Condition

Trouble Area

C1417

+BS terminal voltage is more than 16.5 V for 1 second or more.

  • ABS NO. 2 fuse

  • Battery

  • Charging system

  • Power source circuit

  • Internal power supply circuit of the skid control ECU (brake actuator assembly)

WIRING DIAGRAM

Refer to DTC C1241 (Click here).

CAUTION / NOTICE / HINT

Note:

  • When replacing the skid control ECU (brake actuator assembly), perform system variant learning and acceleration sensor zero point calibration (Click here).

  • Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE

  1. CHECK BATTERY

    Click here

    CHECK OR REPLACE CHARGING SYSTEM COMPONENT OR BATTERY

    (Click here)

    CHECK OR REPLACE CHARGING SYSTEM COMPONENT OR BATTERY

    (Click here)

    CHECK OR REPLACE CHARGING SYSTEM COMPONENT OR BATTERY

    (Click here)

  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL)

    1. U123606E02

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

    2. Disconnect the A78 (for CVT) or A79 (except CVT) skid control ECU (brake actuator assembly) connector.

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

      Standard Voltage (for CVT)

      Tester Connection

      Condition

      Specified Condition

      A78-25 (+BS) - Body ground

      Always

      11 to 14 V

      A78-25 (+BS) - A78-38 (GND1)

      Always

      11 to 14 V

      A78-28 (IG1) - Body ground

      Ignition switch ON

      11 to 14 V

      A78-28 (IG1) - A78-38 (GND1)

      Ignition switch ON

      11 to 14 V

      Standard Voltage (except CVT)

      Tester Connection

      Condition

      Specified Condition

      A79-1 (+BS) - Body ground

      Always

      11 to 14 V

      A79-1 (+BS) - A79-14 (GND1)

      Always

      11 to 14 V

      A79-4 (IG1) - Body ground

      Ignition switch ON

      11 to 14 V

      A79-4 (IG1) - A79-14 (GND1)

      Ignition switch ON

      11 to 14 V
      Table 1. Text in Illustration

      *A

      for CVT

      *B

      except CVT

      *a

      Front view of wire harness connector

      (to Skid Control ECU (Brake Actuator Assembly))

      Result

      Result

      Proceed to

      OK

      A

      NG (for +BS circuit)

      B

      NG (w/o Stop and Start System for IG1 circuit)

      C

      NG (w/ Stop and Start System for IG1 circuit)

      D

    REPAIR OR REPLACE HARNESS OR CONNECTOR (+BS CIRCUIT)

    REPAIR OR REPLACE HARNESS OR CONNECTOR (IG1 CIRCUIT)

    INSPECT STOP AND START SYSTEM (BACKUP BOOST CONVERTER CIRCUIT)

    (Click here)

  3. RECONFIRM DTC

    1. Reconnect the A78 (for CVT) or A79 (except CVT) skid control ECU (brake actuator assembly) connector.

    2. Clear the DTCs (Click here).

    3. Turn the ignition switch off.

    4. Start the engine.

    5. Perform a road test.

    6. Check if the same DTC is output (Click here).

      Result

      Result

      Proceed to

      DTC C1417 is not output.

      A

      DTC C1417 is output.

      B
      Tip:

      If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step (Click here).

    USE SIMULATION METHOD TO CHECK

    (Click here)

    REPLACE BRAKE ACTUATOR ASSEMBLY

    (Click here)