Toyota Corolla Cross: Right Rear Wheel Speed Sensor Circuit Short to Ground or Open (C051214)

Toyota Corolla Cross (2022-2024) Service Manual / Brake / Brake Control / Dynamic Control Systems / Electronically Controlled Brake System (for Gasoline Model) / Right Rear Wheel Speed Sensor Circuit Short to Ground or Open (C051214)

DESCRIPTION

Refer to DTC C051212

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DTC No.	Detection Item	DTC Detection Condition	Trouble Area
C051214	Right Rear Wheel Speed Sensor Circuit Short to Ground or Open	A short or open circuit is detected in the speed sensor signal circuit for 0.12 seconds or more.	Rear speed sensor RH1 Rear speed sensor RH (rear axle hub and bearing assembly RH)2 Wire harness or connector Skid control sensor wire RH (No. 1 parking brake wire assembly) Skid control ECU (brake actuator assembly)

*1: for AWD
*2: for 2WD

WIRING DIAGRAM

Refer to DTC C051212.

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PROCEDURE

1.	CHECK VEHICLE

(a) Check the vehicle specification.

Result	Proceed to
for 2WD	A
for AWD	B

GO TO STEP 7

2.	CHECK HARNESS AND CONNECTOR (SENSOR GROUND 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 o3 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
o3-2 (RR+) - o3-1 (RR-)	Ignition switch ON	11 to 14 V

GO TO STEP 5

3.	INSPECT NO. 1 PARKING BRAKE WIRE 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.

Front view of skid control sensor wire RH (No. 1 parking brake wire assembly)

Front view of wire harness connector

(to Sensor Side Connector)

Front view of wire harness connector

(to Vehicle Side Connector)

(b) Disconnect the o3 skid control sensor wire RH (No. 1 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
o3-1 (RR-) or oO2-1 (RR-) - Body ground and other terminals	Always	10 kΩ or higher

REPLACE NO. 1 PARKING BRAKE WIRE ASSEMBLY

4.	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 A151 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 A151-37 (RR-) - Body ground	Always	10 kΩ or higher

REPLACE REAR AXLE HUB AND BEARING ASSEMBLY RH

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.	INSPECT NO. 1 PARKING BRAKE WIRE 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.

Front view of skid control sensor wire RH (No. 1 parking brake wire assembly)

Front view of wire harness connector

(to Sensor Side Connector)

Front view of wire harness connector

(to Vehicle Side Connector)

(b) Disconnect the o3 skid control sensor wire RH (No. 1 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
o3-1 (RR-) - oO2-1 (RR-)	Always	Below 1 Ω

REPLACE NO. 1 PARKING BRAKE WIRE ASSEMBLY

6.	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 A151 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-) - A151-37 (RR-)	Always	Below 1 Ω

REPLACE BRAKE ACTUATOR ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

7.	CHECK HARNESS AND CONNECTOR (SENSOR GROUND 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)

(b) Disconnect the o4 rear speed sensor 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
o4-1 (RR+) - o4-2 (RR-)	Ignition switch ON	11 to 14 V

GO TO STEP 5

8.	INSPECT NO. 1 PARKING BRAKE WIRE 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.

*a	Front view of skid control sensor wire RH (No. 1 parking brake wire assembly)
*b	to Sensor Side Connector
*c	to Vehicle Side Connector

(b) Disconnect the o4 skid control sensor wire RH (No. 1 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
o4-2 (RR-) or oO2-1 (RR-) - Body ground and other terminals	Always	10 kΩ or higher

REPLACE NO. 1 PARKING BRAKE WIRE ASSEMBLY

9.	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 A151 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 A151-37 (RR-) - Body ground	Always	10 kΩ or higher

REPLACE REAR SPEED SENSOR RH

REPAIR OR REPLACE HARNESS OR CONNECTOR

SEE MORE:

Left Front Wheel Speed Sensor Internal Electronic Failure (C050049)

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Removal REMOVAL CAUTION / NOTICE / HINT COMPONENTS (REOVAL) Procedure Part Name Code 1 REAR SUSPENSION MEMBER SUB-ASSEMBLY 51206A - - - 2 REAR U

Toyota Corolla Cross: Right Rear Wheel Speed Sensor Circuit Short to Ground or Open (C051214)

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