Last Modified: 05-08-2025 6.11:8.1.0 Doc ID: RM10000000214R2
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): C14DD14; Brake Pressure Control solenoid Supply Voltage Circuit Short to Ground or Open; 2022 - 2025 MY RAV4 RAV4 HV [12/2021 -        ]

DTC

C14DD14

Brake Pressure Control solenoid Supply Voltage Circuit Short to Ground or Open

DESCRIPTION

Refer to DTC C110E14.

Click here 2022 - 2025 MY RAV4 RAV4 HV [12/2021 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster): C110E14; Brake Booster Motor "A" Supply Voltage Circuit Short to Ground or Open+

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Note

C14DD14

Brake Pressure Control solenoid Supply Voltage Circuit Short to Ground or Open

Either of the following is detected when the BS terminal voltage is 9.1 V or less:

  • The brake is not applied for 13 seconds or more.
  • The brake is applied for 10.05 seconds or more.
  • Improperly connected connector, deformation or corrosion of terminals
  • Wire harness and connector
  • No. 1 skid control ECU (brake booster with master cylinder assembly)

Comes on
  • SAE Code: C14DE
  • Output ECU: Both skid control ECUs

C14DD14 DTC Detection Conditions

 

Vehicle Condition

Pattern 1

Pattern 2

Diagnosis Condition

When the BS terminal voltage is 9.1 V or less

○

○

Malfunction Status

The brake is not applied

○

-

The brake is applied

-

○

Detection Time

13 seconds or more.

10.05 seconds or more.

Number of Trips

1 trip

1 trip

HINT:

DTC will be output when conditions for either of the patterns in the table above are met.

MONITOR DESCRIPTION

When the voltage at BS drops due to a malfunction in the auxiliary battery and hybrid control system (charging circuit), the No. 2 skid control ECU (brake actuator assembly) judges that there is a drop in the power supply and illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Related DTCs

C14DE: Brake system voltage circuit low

Required Sensors/Components(Main)

Brake pedal stroke sensor assembly

No. 2 skid control ECU (brake actuator assembly)

Stop light switch assembly

Required Sensors/Components(Related)

No. 2 skid control ECU (brake actuator assembly)

Frequency of Operation

Continuous

Duration

10.050 seconds: C14DE (Case 2)

12.996 seconds: C14DE (Case 1)

MIL Operation

Immediately

Sequence of Operation

None

TYPICAL ENABLING CONDITIONS

All

Monitor runs whenever the following DTCs are not stored

C12FA: Brake system voltage power supply relay open circuit

All of the following conditions are met

-

Command to brake pressure control solenoid power supply relay

On

Vehicle electric power supply

Stable state

Main relay monitor

On

Brake system voltage fail (C12FA)

Not detected

TYPICAL MALFUNCTION THRESHOLDS

Case 1

Both of the following conditions are met

-

Power supply for brake pressure control solenoid

9.1 V or less

Brake control

Off

Case 2

Both of the following conditions are met

-

Power supply for brake pressure control solenoid

9.1 V or less

Brake control

On

COMPONENT OPERATING RANGE

All

All of the following conditions are met

A, B, C and D

A. Command to brake pressure control solenoid power supply relay

On

B. Following condition is met

0.198 seconds or more

Brake system voltage 1

Higher than 8.5 V

C. Power supply for brake pressure control solenoid

Higher than 9.1 V

D. Either of the following conditions is met

a or b

a. Ignition switch

Off

b. Both of the following conditions are met

-

Ignition switch

On (READY)

IG1 voltage

Higher than 9.5 V

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 3 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 C110E14.

Click here 2022 - 2025 MY RAV4 RAV4 HV [12/2021 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster): C110E14; Brake Booster Motor "A" Supply Voltage Circuit Short to Ground or Open

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 - 2025 MY RAV4 RAV4 HV [11/2018 -        ]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING

  • After replacing the No. 1 skid control ECU (brake booster with master cylinder assembly), perform "Calibration" after performing "Reset Memory".

    Click here 2022 - 2025 MY RAV4 RAV4 HV [12/2021 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster): UTILITY

PROCEDURE

1.

CHECK DTC

(a) Check the DTCs that are output.

Chassis > Brake Booster > Trouble Codes

Chassis > Brake/EPB > Trouble Codes

Result

Proceed to

Only DTC C14DD14 is output.

A

DTCs other than C14DD14 are output.

B
B

REPAIR CIRCUITS INDICATED BY OUTPUT DTCS
A

2.

CHECK HARNESS AND CONNECTOR (BS TERMINAL)

(a) Turn the ignition switch off.

*a

Front view of wire harness connector

(to No. 1 Skid Control ECU (Brake Booster with Master Cylinder Assembly))

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

OK:

The connector is securely connected.

(c) Disconnect the A104 No. 1 skid control ECU (brake booster with master cylinder assembly) connector.

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

OK:

No deformation or corrosion.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

A104-15 (BS) - Body ground

Always

11 to 14 V

Result

Proceed to

11 to 14 V.

A

Below 11 V.

B
A

REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY 2022 MY RAV4 RAV4 HV [12/2021 - 10/2022]; BRAKE SYSTEM (OTHER): BRAKE BOOSTER (w/o Vacuum Brake Booster): REMOVAL 2023 MY RAV4 RAV4 HV [10/2022 - 10/2023]; BRAKE SYSTEM (OTHER): BRAKE BOOSTER (w/o Vacuum Brake Booster): REMOVAL 2024 - 2025 MY RAV4 RAV4 HV [10/2023 -        ]; BRAKE SYSTEM (OTHER): BRAKE BOOSTER (w/o Vacuum Brake Booster): REMOVAL

B

REPAIR OR REPLACE HARNESS OR CONNECTOR