ANTI-LOCK BRAKE SYSTEM, Diagnostic DTC:C0226/21, C0236/22, C0246/23

DTC Code DTC Name
C0226/21 SFR Solenoid Circuit
C0236/22 SFL Solenoid Circuit
C0246/23 SRR Solenoid Circuit

DESCRIPTION

This solenoid goes on when signals are received from the ECU and controls the pressure acting on the wheel cylinders thus controlling the braking force.

DTC No. DTC Detecting Condition Trouble Area
C0226 / 21

Conditions 1. and 2. continue for 0.05 seconds or more.


  1. ECU IG1 terminal voltage 9.5 V to 18.5 V and the solenoid has open or short circuit.

  2. ECU IG1 terminal voltage is 9.5 V to 18.5 V and the condition that the solenoid relay contact is OFF during ABS operation.

  • Brake actuator

  • SFRH or SFRR circuit
C0236 / 22

Conditions 1. and 2. continue for 0.05 seconds or more.


  1. ECU IG1 terminal voltage 9.5 V to 18.5 V and the solenoid has open or short circuit.

  2. ECU IG1 terminal voltage is 9.5 V to 18.5 V and the condition that the solenoid relay contact is OFF during ABS operation.

  • Brake actuator

  • SFLH or SFLR circuit
C0246 / 23

Conditions 1. and 2. continue for 0.05 seconds or more.


  1. ECU IG1 terminal voltage 9.5 V to 18.5 V and the solenoid has open or short circuit.

  2. ECU IG1 terminal voltage is 9.5 V to 18.5 V and the condition that the solenoid relay contact is OFF during ABS operation.

  • Brake actuator

  • SRH or SRR circuit

WIRING DIAGRAM

A01KFFQE01

INSPECTION PROCEDURE

PROCEDURE


  1. INSPECT BRAKE ACTUATOR ASSEMBLY

    A01KG56E01

    1. Disconnect the 2 connectors from the brake actuator.

    2. Check continuity between terminal A4 - 4 and A5 - 1, 2, 4, 5, 6 and 8 of brake actuator.

      OK
      Continuity

      Tech Tips

      Resistance of each solenoid

      SFRH (A5-1), SFLH (A5-2), SRH (A5-4): 8.1 - 9.1 Ω

      SFRR (A5-5), SFLR (A5-6), SRR (A5-8): 4.0 - 4.6 Ω


    NG

    REPLACE BRAKE ACTUATOR ASSEMBLY

    OK

  2. CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR - SKID CONTROL ECU)


    1. Check for open and short circuit in harness and connector between each solenoid and skid control ECU Click here.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK SKID CONTROL ECU TERMINAL VOLTAGE (SR TERMINAL)


    1. Remove the skid control ECU with connectors still connected.

    2. Turn the ignition switch ON, measure between terminal SR and GND.

      OK
      Voltage: 1 V or less

    NG

    CHECK AND REPAIR HARNESS AND ABS SOLENOID RELAY

    OK

  4. CHECK RECONFIRM DTC


    1. Check DTC on page Click here.

      A Malfunction Code
      B Normal Code

    B

    NO PROBLEM

    A

  5. CHECK CONTACT CONDITION (EACH CONNECTION)


    NG

    CHECK AND REPAIR HARNESS AND CONNECTOR

    OK

    CHECK AND REPLACE SKID CONTROL ECU ASSEMBLY