Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM10000000214P4
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): C050C14; Left Rear Wheel Speed Sensor Circuit Short to Ground or Open; 2022 - 2024 MY RAV4 RAV4 HV [12/2021 -        ]

DTC

C050C14

Left Rear Wheel Speed Sensor Circuit Short to Ground or Open

DESCRIPTION

Refer to DTC C050C12.

Click here 2022 MY RAV4 RAV4 HV [12/2021 - 10/2022]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster): C050C12; Left Rear Wheel Speed Sensor Circuit Short to Battery 2023 - 2024 MY RAV4 RAV4 HV [10/2022 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster): C050C12; Left Rear Wheel Speed Sensor Circuit Short to Battery

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Note

C050C14

Left Rear Wheel Speed Sensor Circuit Short to Ground or Open

An open in the skid control sensor signal circuit continues for 0.5 seconds or more.

  • Rear skid control sensor LH
  • Skid control sensor wire LH (No. 2 parking brake wire assembly)
  • Wire harness and connector
  • No. 2 skid control ECU (brake actuator assembly)

Comes on

  • SAE Code: C050E
  • Output ECU: No. 2 skid control ECU (brake actuator assembly)

MONITOR DESCRIPTION

The No. 2 skid control ECU (brake actuator assembly) monitors the output of the speed sensors. When the output current of the speed sensor is excessively low, the MIL is illuminated and a DTC is stored.

MONITOR STRATEGY

Related DTCs

C050E: Wheel speed sensor (RL) voltage circuit open

Required Sensors/Components(Main)

Speed sensor

Required Sensors/Components(Related)

No. 2 skid control ECU (brake actuator assembly)

Frequency of Operation

Continuous

Duration

0.528 seconds

MIL Operation

Immediately

Sequence of Operation

None

TYPICAL ENABLING CONDITIONS

Monitor runs whenever the following DTCs are not stored

C050D (Case 4): Wheel speed sensor (RL) range/performance

C050F: Wheel speed sensor (RL) voltage circuit high

C137D: Brake system voltage input out of range high

C14E7: Wheel speed sensor (RL) voltage circuit low

All of the following conditions are met

-

+BS voltage

17.4 V or less

Command to wheel speed sensor power supply

On

Vehicle speed sensor supply voltage state

Valid

Wheel speed sensor current

Less than 0.034 A

TYPICAL MALFUNCTION THRESHOLDS

Wheel speed sensor current

0.004 A or less

COMPONENT OPERATING RANGE

Wheel speed sensor current

Higher than 0.004 A

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 2 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 C050C12.

Click here 2022 MY RAV4 RAV4 HV [12/2021 - 10/2022]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster): C050C12; Left Rear Wheel Speed Sensor Circuit Short to Battery 2023 - 2024 MY RAV4 RAV4 HV [10/2022 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster): C050C12; Left Rear Wheel Speed Sensor Circuit Short to Battery

CAUTION / NOTICE / HINT

NOTICE:

  • 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

  • After replacing or removing and installing a skid control sensor, perform Dealer Mode (Signal Check) inspection to confirm that the skid control sensors are operating correctly.

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

PROCEDURE

1.

READ VALUE USING GTS (MOMENTARY INTERRUPTION)

(a) Select the line graph display on the GTS.

(b) Check for any momentary interruption in the wire harness and connector.

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

Chassis > Brake/EPB > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

RL Speed Open

Momentary interruption of rear skid control sensor LH pulse input to ECU

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

RL Speed Sensor Voltage Open

Rear skid control sensor LH voltage open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

-

Chassis > Brake/EPB > Data List

Tester Display

RL Speed Open

RL Speed Sensor Voltage Open

OK:

Normal (There are no momentary interruptions.)

NOTICE:

Perform the above inspection before removing the sensor and connector.

OK

USE SIMULATION METHOD TO CHECK

NG

2.

INSPECT NO. 2 PARKING BRAKE WIRE ASSEMBLY

(a) Turn the ignition switch off.

*a

Front view of skid control sensor wire LH (No. 2 parking brake wire assembly)

*b

to Sensor Side Connector

*c

to Vehicle Side Connector

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

OK:

The connector is securely connected.

(c) Disconnect the N58 and NN12 skid control sensor wire LH (No. 2 parking brake wire assembly) connector.

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

OK:

No deformation or corrosion.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

N58-2 (+) - NN12-3

Always

Below 1 Ω

N58-2 (+) or NN12-3 - Body ground and other terminals

Always

10 kΩ or higher

N58-1 (-) - NN12-4

Always

Below 1 Ω

N58-1 (-) or NN12-4 - Body ground and other terminals

Always

10 kΩ or higher

NG

REPLACE NO. 2 PARKING BRAKE WIRE ASSEMBLY

OK

3.

CHECK HARNESS AND CONNECTOR (NO. 2 PARKING BRAKE WIRE ASSEMBLY - BRAKE ACTUATOR ASSEMBLY)

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

OK:

The connector is securely connected.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

NN12-3 - A105-5 (RL+)

Always

Below 1 Ω

NN12-3 or A105-5 (RL+) - Body ground

Always

10 kΩ or higher

NN12-4 - A105-4 (RL-)

Always

Below 1 Ω

NN12-4 or A105-4 (RL-) - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

4.

INSPECT BRAKE ACTUATOR ASSEMBLY (SENSOR POWER SOURCE CIRCUIT)

(a) Reconnect the A105 No. 2 skid control ECU (brake actuator assembly) connector.

*a

Front view of skid control sensor wire LH (No. 2 parking brake wire assembly)

(to Rear Skid Control Sensor LH)

(b) Reconnect the NN12 skid control sensor wire LH (No. 2 parking brake wire assembly) connector.

(c) Turn the ignition switch to ON.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

N58-2 (+) - Body ground

Ignition switch ON

11 to 14 V

OK

REPLACE REAR SKID CONTROL SENSOR LH

NG

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