Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM10000000214PU
Model Year Start: 2022 Model: RAV4 Prod Date Range: [12/2021 -           ]
Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster): C12C016; Brake System Control Module Power Supply Voltage Circuit Voltage Below Threshold; 2022 - 2024 MY RAV4 RAV4 HV [12/2021 -        ]

DTC

C12C016

Brake System Control Module Power Supply Voltage Circuit Voltage Below Threshold

DESCRIPTION

Refer to DTC C123D14.

Click here 2022 - 2024 MY RAV4 RAV4 HV [12/2021 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster): C123D14; IG2 Circuit Short to Ground or Open

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Note

C12C016

Brake System Control Module Power Supply Voltage Circuit Voltage Below Threshold

When the IG1 terminal voltage is less than 3.0 V, the IG2 terminal voltage is 9.5 V or more for 4 seconds or more.
  • Open or short in IG1 circuit
  • Improperly connected connector, deformation or corrosion of terminals
  • No. 2 skid control ECU (brake actuator assembly)

Comes on
  • SAE Code: C1241
  • Output ECU: No. 2 skid control ECU (brake actuator assembly)

MONITOR DESCRIPTION

During normal operation, the voltage at IG1 and IG2 changes mutually; however, if the voltages do not change mutually such as when IG1 is off and IG2 is on, the No. 2 skid control ECU (brake actuator assembly) judges that the power supply voltage of IG is excessively low, and illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Related DTCs

C1241: Brake system voltage input out of range low

Required Sensors/Components(Main)

No. 2 skid control ECU (brake actuator assembly)

Required Sensors/Components(Related)

No. 2 skid control ECU (brake actuator assembly)

Frequency of Operation

Continuous

Duration

4 seconds

MIL Operation

Immediately

Sequence of Operation

None

TYPICAL ENABLING CONDITIONS

Monitor runs whenever the following DTCs are not stored

C123E: Brake system voltage input open circuit

IG2 voltage

Higher than 9.5 V

TYPICAL MALFUNCTION THRESHOLDS

IG1 voltage

Less than 3 V

COMPONENT OPERATING RANGE

Both of the following conditions are met

-

IG2 voltage

Higher than 9.5 V

IG1 voltage

3.5 V or more

CONFIRMATION DRIVING PATTERN

NOTICE:

When performing the normal judgment procedure, make sure that the driver door is closed and is not opened at any time during the procedure.

HINT:

  • After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
  • When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
  1. Connect the GTS to the DLC3.
  2. Turn the ignition switch to ON and turn the GTS on.
  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  4. Turn the ignition switch off.
  5. Turn the ignition switch to ON (READY) and turn the GTS on.
  6. Wait for 8 seconds or more. [*]

    HINT:

    [*]: Normal judgment procedure.

    The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.

  7. Enter the following menus: Chassis / Brake/EPB / Utility / All Readiness.
  8. Check the DTC judgment result.

    HINT:

    • If the judgment result shows NORMAL, the system is normal.
    • If the judgment result shows ABNORMAL, the system has a malfunction.
    • If the judgment result shows INCOMPLETE, perform driving pattern again.

WIRING DIAGRAM

Refer to DTC C137BA2.

Click here 2022 - 2024 MY RAV4 RAV4 HV [12/2021 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster): C137BA2; Brake System Control Module "A" System Voltage System Voltage Low+

CAUTION / NOTICE / HINT

NOTICE:

  • Inspect the fuses for circuits related to this system before performing the following procedure.
  • Before performing troubleshooting, make sure to confirm that the auxiliary battery voltage is normal.

    Click here 2019 - 2024 MY RAV4 RAV4 HV [11/2018 -        ]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING

  • After replacing the No. 2 skid control ECU (brake actuator assembly), perform "Calibration" after performing "Reset Memory".

    Click here 2022 - 2024 MY RAV4 RAV4 HV [12/2021 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster): UTILITY

PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (IG1 TERMINAL)

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

OK:

The connector is securely connected.

*a

Front view of wire harness connector

(to No. 2 Skid Control ECU (Brake Actuator Assembly))

(b) Disconnect the A105 No. 2 skid control ECU (brake actuator assembly) connector.

(c) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

(d) Turn the ignition switch to ON.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

A105-45 (IG1) - Body ground

Ignition switch ON

11 to 14 V

Result

Proceed to

11 to 14 V.

A

Below 11 V.

B
A

REPLACE BRAKE ACTUATOR ASSEMBLY 2022 MY RAV4 RAV4 HV [12/2021 - 10/2022]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: BRAKE ACTUATOR (w/o Vacuum Brake Booster): REMOVAL 2023 MY RAV4 RAV4 HV [10/2022 - 10/2023]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: BRAKE ACTUATOR (w/o Vacuum Brake Booster): REMOVAL 2024 MY RAV4 RAV4 HV [10/2023 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: BRAKE ACTUATOR (w/o Vacuum Brake Booster): REMOVAL

B

REPAIR OR REPLACE HARNESS OR CONNECTOR