DTC C1413: Front Speed Sensor RH Circuit Output; DTC C1414: Front Speed Sensor LH Circuit Output [09/2016 - ]: Procedure

1. Using the Techstream, check for any momentary interruptions in the wire harness and connector corresponding to a DTC.

   Refer to CHECK FOR INTERMITTENT PROBLEMS [09/2016 - ]

   Chassis > ABS/VSC/TRAC > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   FR Speed Sensor Voltage Open	Front speed sensor RH voltage open detection	Error or Normal	Error: Momentary interruption Normal: Normal	-
   FL Speed Sensor Voltage Open	Front speed sensor LH voltage open detection	Error or Normal	Error: Momentary interruption Normal: Normal	-

   Chassis > ABS/VSC/TRAC > Data List 

   Tester Display
   FR Speed Sensor Voltage Open
   FL Speed Sensor Voltage Open

2. Check for any momentary interruptions in the wire harness and connectors.

   OK

   There are no momentary interruptions.

   NOTE:

   Perform the above inspection before removing the sensor and connector.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

See step  4

Result: 

OK 

See step  2

1. Select the Data List on the Techstream.

   Refer to DATA LIST / ACTIVE TEST [09/2016 - ]

   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
   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
   FR Wheel Speed
   FL Wheel Speed

2. Check the speed sensor output value.

   OK

   The output value changes in accordance with the vehicle speed.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

See step  4

Result: 

OK 

See step  3

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [09/2016 - ]

   Chassis > ABS/VSC/TRAC > Clear DTCs 

2. Turn the power switch off.
3. Turn the power switch on (READY).
4. Perform a road test.
5. Check if the same DTC is output.

   Refer to DTC CHECK / CLEAR [09/2016 - ]

   Chassis > ABS/VSC/TRAC > Trouble Codes 

   Result

   Result	Proceed to
   DTCs C1413 and C1414 are not output.	A
   DTCs C1413 and/or C1414 are output.	B

Result: 

A 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2016 - 05/2019]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [05/2019 - 07/2020]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [07/2020 - 06/2021]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2021 - ] 

Result: 

B 

REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY. Refer to  REMOVAL [09/2016 - 07/2020]  , or refer to  REMOVAL [07/2020 - ] 

1. Turn the power switch off.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *1	Front Speed Sensor
   *a	OK
   *b	NG
   *c	8.5 N*m
   *d	No Clearance

2. Check the speed sensor 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)

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REINSTALL OR REPLACE FRONT SPEED SENSOR. Refer to  REMOVAL [09/2016 - ] 

Result: 

OK 

See step  5

1. Remove the front speed sensor and the component with the speed sensor rotor.

   for Speed Sensor: Refer to REMOVAL [09/2016 - ]

   for Speed Sensor Rotor: Refer to REMOVAL [09/2016 - 07/2020] , or refer to REMOVAL [07/2020 - ]

2. Check the speed sensor tip and speed sensor rotor.

   OK

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

   NOTE:

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

     Refer to TEST MODE PROCEDURE [09/2016 - 07/2020] , or refer to TEST MODE PROCEDURE [07/2020 - ]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

CLEAN OR REPLACE FRONT SPEED SENSOR AND SENSOR ROTOR 

Result: 

OK 

See step  6

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

   OK

   The connector is securely connected.

2. Disconnect the A32 skid control ECU (brake booster with master cylinder assembly) connector.
3. Disconnect the A63 or A62 front speed sensor connector.
4. Check both the connector case and the terminals for deformation and corrosion.

   OK

   No deformation or corrosion.

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

   Standard Resistance

   FOR RH
   
   

   Tester Connection	Condition	Specified Condition
   A32-3 (FR+) - A63-1 (FR+)	Always	Below 1 Ω
   A32-3 (FR+) or A63-1 (FR+) - Body ground	Always	10 kΩ or higher
   A32-4 (FR-) - A63-2 (FR-)	Always	Below 1 Ω
   A32-4 (FR-) or A63-2 (FR-) - Body ground	Always	10 kΩ or higher

   FOR LH
   
   

   Tester Connection	Condition	Specified Condition
   A32-31 (FL+) - A62-1 (FL+)	Always	Below 1 Ω
   A32-31 (FL+) or A62-1 (FL+) - Body ground	Always	10 kΩ or higher
   A32-32 (FL-) - A62-2 (FL-)	Always	Below 1 Ω
   A32-32 (FL-) or A62-2 (FL-) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  7

1. Reconnect the A32 skid control ECU (brake booster with master cylinder assembly) connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *A	for RH
   *B	for LH
   *a	Front view of wire harness connector (to Front Speed Sensor)

2. Turn the power switch on (IG).
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   FOR RH
   
   

   Tester Connection	Condition	Specified Condition
   A63-1 (FR+) - Body ground	Power switch on (IG)	8 to 14 V

   FOR LH
   
   

   Tester Connection	Condition	Specified Condition
   A62-1 (FL+) - Body ground	Power switch on (IG)	8 to 14 V

   NOTE:

   Check the speed sensor signal after replacement.

   Refer to TEST MODE PROCEDURE [09/2016 - 07/2020] , or refer to TEST MODE PROCEDURE [07/2020 - ]

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE FRONT SPEED SENSOR. Refer to  REMOVAL [09/2016 - ] 

Result: 

NG 

REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY. Refer to  REMOVAL [09/2016 - 07/2020]  , or refer to  REMOVAL [07/2020 - ]