BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model with Electric Parking Brake System): C14E914; Right Rear Wheel Speed Sensor Supply Voltage Circuit Short to Ground or Open; 2023 MY Corolla Corolla Hatchback GR Corolla [11/2022

Last Modified: 05-13-2024	6.11:8.1.0	Doc ID: RM1000000028D84
Model Year Start: 2023	Model: GR Corolla	Prod Date Range: [11/2022 - 08/2023]
Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model with Electric Parking Brake System): C14E914; Right Rear Wheel Speed Sensor Supply Voltage Circuit Short to Ground or Open; 2023 MY Corolla Corolla Hatchback GR Corolla [11/2022 - 08/2023]

DTC

C14E914

Right Rear Wheel Speed Sensor Supply Voltage Circuit Short to Ground or Open

DESCRIPTION

Refer to DTC C051212

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DTC No.	Detection Item	DTC Detection Condition	Trouble Area
C14E914	Right Rear Wheel Speed Sensor Supply Voltage Circuit Short to Ground or Open	An open or short in the speed sensor power supply circuit is detected for 0.12 seconds or more.	Rear speed sensor RH (rear axle hub and bearing assembly RH) Wire harness or connector Skid control sensor wire RH (No. 1 parking brake wire assembly) Skid control ECU (brake actuator assembly)

WIRING DIAGRAM

Refer to DTC C051212.

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PROCEDURE

1.	CHECK HARNESS AND CONNECTOR (SENSOR POWER SOURCE CIRCUIT)

(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.

*a	Front view of skid control sensor wire RH (No. 1 parking brake wire assembly) (to Rear Speed Sensor RH (Rear Axle Hub and Bearing Assembly RH))

(b) Disconnect the o2 rear speed sensor RH (rear axle hub and bearing assembly RH) connector.

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
o2-2 (RR+) - o2-1 (RR-)	Ignition switch ON	11 to 14 V

REPLACE REAR AXLE HUB AND BEARING ASSEMBLY RH

for Double Wishbone Type Suspension: Click here

for Torsion Beam Type Suspension: Click here

2.	CHECK HARNESS AND CONNECTOR (SENSOR POWER SOURCE CIRCUIT)

(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.

*a	Front view of wire harness connector (to Skid Control Sensor Wire RH (No. 1 Parking Brake Wire Assembly))

(b) Disconnect the oO2 skid control sensor wire RH (No. 1 parking brake wire assembly) connector.

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
oO2-1 (RR+) - oO2-2 (RR-)	Ignition switch ON	11 to 14 V

REPLACE NO. 1 PARKING BRAKE WIRE ASSEMBLY

3.	CHECK HARNESS AND CONNECTOR (NO. 1 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 A51 skid control ECU (brake actuator 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
oO2-1 (RR+) or A51-22 (RR+) - Body ground	Always	10 kΩ or higher

REPLACE BRAKE ACTUATOR ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR