Last Modified: 11-20-2023 6.11:8.1.0 Doc ID: RM1000000014VMY
Model Year Start: 2018 Model: Camry HV Prod Date Range: [07/2017 - 09/2018]
Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM: C1401,C1402; Malfunction in Front Speed Sensor RH Circuit; 2018 MY Camry HV [07/2017 - 09/2018]

DTC

C1401

Malfunction in Front Speed Sensor RH Circuit

DTC

C1402

Malfunction in Front Speed Sensor LH Circuit

DESCRIPTION

Refer to DTCs C1413 and C1414.

Click here 2018 MY Camry HV [07/2017 - 09/2018]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM: C1413,C1414; Front Speed Sensor RH Circuit Output

DTC No.

Detection Item

INF Code

DTC Detection Condition

Trouble Area

Note

C1401

Malfunction in Front Speed Sensor RH Circuit

501

502

507
  • INF Code: 501
    • At a vehicle speed of 10 km/h (6 mph) or more, output voltage from one of the speed sensors is less than that from the other sensors for 15 seconds or more.
  • INF Code: 502
    • At a vehicle speed of 10 km/h (6 mph) or more, outputs from both front speed sensors are 0 km/h (0 mph) for 15 seconds or more. (except when both rear speed sensors are 0 km/h (0 mph)).
  • INF Code: 507
    • At a vehicle speed of 10 km/h (6 mph) or more, output from one of the speed sensors is 0 km/h (0 mph) for 1 second or more.
  • Front speed sensor RH
  • Speed sensor installed improperly
  • Front speed sensor rotor RH (front axle hub sub-assembly RH)

ABS DTC

C1402

Malfunction in Front Speed Sensor LH Circuit

511

512

517
  • INF Code: 511
    • At a vehicle speed of 10 km/h (6 mph) or more, output voltage from one of the speed sensors is less than that from the other sensors for 15 seconds or more.
  • INF Code: 512
    • At a vehicle speed of 10 km/h (6 mph) or more, outputs from both front speed sensors are 0 km/h (0 mph) for 15 seconds or more. (except when both rear speed sensors are 0 km/h (0 mph)).
  • INF Code: 517
    • At a vehicle speed of 10 km/h (6 mph) or more, output from one of the speed sensors is 0 km/h (0 mph) for 1 second or more.
  • Front speed sensor LH
  • Speed sensor installed improperly
  • Front speed sensor rotor LH (front axle hub sub-assembly LH)

ABS DTC

WIRING DIAGRAM

Refer to DTCs C1413 and C1414.

Click here 2018 MY Camry HV [07/2017 - 09/2018]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM: C1413,C1414; Front Speed Sensor RH Circuit Output

PROCEDURE

1.

CHECK DTC

(a) Clear the DTCs.

Chassis > ABS/VSC/TRAC > Clear DTCs

(b) Turn the power switch off.

(c) Turn the power switch on (IG).

(d) Check if the same DTC is output.

Chassis > ABS/VSC/TRAC > Trouble Codes

Result

Proceed to

DTC C1401 is output.

A

DTC C1402 is output.

B
B

GO TO STEP 7

A

2.

CHECK FRONT SPEED SENSOR RH INSTALLATION

(a) Check the front speed sensor RH installation.

OK:

There is no clearance between the sensor and the front steering knuckle.

The installation bolt is tightened properly.

Torque

8.5 N*m (87 kgf*cm, 75 in.*lbf)

*1

Front Speed Sensor RH

*a

OK

*b

NG

*c

8.5 N*m

*d

No Clearance
NG

REINSTALL OR REPLACE FRONT SPEED SENSOR RH

OK

3.

CHECK FRONT SPEED SENSOR RH (CHECK FOR FOREIGN MATTER)

(a) Remove the front speed sensor RH.

Click here 2018 - 2024 MY Camry HV [07/2017 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: FRONT SPEED SENSOR: REMOVAL

(b) Check the front speed sensor tip RH.

OK:

The sensor tip is free of scratches, oil, and foreign matter.

NOTICE:

  • If there is oil or foreign matter on the front speed sensor RH, clean the front speed sensor RH.
  • If the front speed sensor RH is damaged, replace the front speed sensor RH with a new one.
  • Check the front speed sensor RH signal after cleaning or replacement.

    Click here 2018 MY Camry HV [07/2017 - 09/2018]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM: TEST MODE PROCEDURE

NG

CLEAN OR REPLACE FRONT SPEED SENSOR RH
OK

4.

READ VALUE USING TECHSTREAM (FRONT SPEED SENSOR RH)

(a) Install the front speed sensor RH.

(b) Select the Data List on the Techstream.

Chassis > ABS/VSC/TRAC > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

FR Wheel Speed

Front speed sensor RH

Min.: 0 km/h (0 mph), Max.: 326.4 km/h (203 mph)

Vehicle stopped: 0 km/h (0 mph)

When driving at constant speed: No large fluctuations

Chassis > ABS/VSC/TRAC > Data List

Tester Display

FR Wheel Speed

(c) Check the front speed sensor RH output value.

OK:

The output value changes in accordance with the vehicle speed.

OK

USE SIMULATION METHOD TO CHECK

NG

5.

CHECK HARNESS AND CONNECTOR (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY - FRONT SPEED SENSOR RH)

(a) Turn the power switch off.

(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 A40 skid control ECU (brake booster with master cylinder assembly) connector.

(d) Disconnect the A35 front speed sensor RH connector.

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

OK:

No deformation or corrosion.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A40-3 (FR+) - A35-1 (FR+)

Always

Below 1 Ω

A40-3 (FR+) or A35-1 (FR+) - Body ground

Always

10 kΩ or higher

A40-4 (FR-) - A35-2 (FR-)

Always

Below 1 Ω

A40-4 (FR-) or A35-2 (FR-) - Body ground

Always

10 kΩ or higher
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

6.

CHECK FRONT SPEED SENSOR ROTOR RH (CHECK FOR FOREIGN MATTER)

(a) Remove the front speed sensor RH and the component with the front speed sensor rotor RH.

for Front Speed Sensor RH: Click here 2018 - 2024 MY Camry HV [07/2017 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: FRONT SPEED SENSOR: REMOVAL

for Front Speed Sensor Rotor RH: Click here 2018 - 2020 MY Camry HV [07/2017 - 10/2020]; AXLE AND DIFFERENTIAL: FRONT AXLE HUB: REMOVAL

(b) Check the front speed sensor rotor RH.

OK:

The front speed sensor rotor RH is free of scratches, oil, and foreign matter.

NOTICE:

  • If there is oil or foreign matter on the front speed sensor rotor RH, clean the front speed sensor rotor RH.
  • If the front speed sensor rotor RH is damaged, replace the front speed sensor rotor RH with a new one.
  • Check the front speed sensor RH signal after cleaning or replacement.

    Click here 2018 MY Camry HV [07/2017 - 09/2018]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM: TEST MODE PROCEDURE

HINT:

  • The front speed sensor rotor RH is incorporated into the front axle hub sub-assembly RH.
  • If the front speed sensor rotor RH needs to be replaced, replace it together with the front axle hub sub-assembly RH.

Result

Proceed to

OK

A

NG (The front speed sensor rotor RH is damaged.)

B

NG (There is foreign matter on the front speed sensor rotor RH.)

C
A

REPLACE FRONT SPEED SENSOR RH

B

REPLACE FRONT AXLE HUB SUB-ASSEMBLY RH

C

CLEAN FRONT SPEED SENSOR ROTOR RH

7.

CHECK FRONT SPEED SENSOR LH INSTALLATION

(a) Check the front speed sensor LH installation.

OK:

There is no clearance between the sensor and the front steering knuckle.

The installation bolt is tightened properly.

Torque

8.5 N*m (87 kgf*cm, 75 in.*lbf)

*1

Front Speed Sensor LH

*a

OK

*b

NG

*c

8.5 N*m

*d

No Clearance
NG

REINSTALL OR REPLACE FRONT SPEED SENSOR LH

OK

8.

CHECK FRONT SPEED SENSOR LH (CHECK FOR FOREIGN MATTER)

(a) Remove the front speed sensor LH.

Click here 2018 - 2024 MY Camry HV [07/2017 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: FRONT SPEED SENSOR: REMOVAL

(b) Check the front speed sensor tip LH.

OK:

The sensor tip is free of scratches, oil, and foreign matter.

NOTICE:

  • If there is oil or foreign matter on the front speed sensor LH, clean the front speed sensor LH.
  • If the front speed sensor LH is damaged, replace the front speed sensor LH with a new one.
  • Check the front speed sensor LH signal after cleaning or replacement.

    Click here 2018 MY Camry HV [07/2017 - 09/2018]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM: TEST MODE PROCEDURE

NG

CLEAN OR REPLACE FRONT SPEED SENSOR LH
OK

9.

READ VALUE USING TECHSTREAM (FRONT SPEED SENSOR LH)

(a) Install the front speed sensor LH.

(b) Select the Data List on the Techstream.

Chassis > ABS/VSC/TRAC > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

FL Wheel Speed

Front speed sensor LH

Min.: 0 km/h (0 mph), Max.: 326.4 km/h (203 mph)

Vehicle stopped: 0 km/h (0 mph)

When driving at constant speed: No large fluctuations

Chassis > ABS/VSC/TRAC > Data List

Tester Display

FL Wheel Speed

(c) Check the front speed sensor LH output value.

OK:

The output value changes in accordance with the vehicle speed.

OK

USE SIMULATION METHOD TO CHECK

NG

10.

CHECK HARNESS AND CONNECTOR (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY - FRONT SPEED SENSOR LH)

(a) Turn the power switch off.

(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 A40 skid control ECU (brake booster with master cylinder assembly) connector.

(d) Disconnect the A36 front speed sensor LH connector.

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

OK:

No deformation or corrosion.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A40-31 (FL+) - A36-1 (FL+)

Always

Below 1 Ω

A40-31 (FL+) or A36-1 (FL+) - Body ground

Always

10 kΩ or higher

A40-32 (FL-) - A36-2 (FL-)

Always

Below 1 Ω

A40-32 (FL-) or A36-2 (FL-) - Body ground

Always

10 kΩ or higher
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

11.

CHECK FRONT SPEED SENSOR ROTOR LH (CHECK FOR FOREIGN MATTER)

(a) Remove the front speed sensor LH and the component with the front speed sensor rotor LH.

for Front Speed Sensor LH: Click here 2018 - 2024 MY Camry HV [07/2017 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: FRONT SPEED SENSOR: REMOVAL

for Front Speed Sensor Rotor LH: Click here 2018 - 2020 MY Camry HV [07/2017 - 10/2020]; AXLE AND DIFFERENTIAL: FRONT AXLE HUB: REMOVAL

(b) Check the front speed sensor rotor LH.

OK:

The front speed sensor rotor LH is free of scratches, oil, and foreign matter.

NOTICE:

  • If there is oil or foreign matter on the front speed sensor rotor LH, clean the front speed sensor rotor LH.
  • If the front speed sensor rotor LH is damaged, replace the front speed sensor rotor LH with a new one.
  • Check the front speed sensor LH signal after cleaning or replacement.

    Click here 2018 MY Camry HV [07/2017 - 09/2018]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM: TEST MODE PROCEDURE

HINT:

  • The front speed sensor rotor LH is incorporated into the front axle hub sub-assembly LH.
  • If the front speed sensor rotor LH needs to be replaced, replace it together with the front axle hub sub-assembly LH.

Result

Proceed to

OK

A

NG (The front speed sensor rotor LH is damaged.)

B

NG (There is foreign matter on the front speed sensor rotor LH.)

C
A

REPLACE FRONT SPEED SENSOR LH

B

REPLACE FRONT AXLE HUB SUB-ASSEMBLY LH

C

CLEAN FRONT SPEED SENSOR ROTOR LH