DTC C1413: Front Speed Sensor RH Output Malfunction; DTC C1414: Front Speed Sensor LH Output Malfunction: Procedure

1. Using the Techstream, check for any momentary interruption in the wire harness and connector corresponding to the DTC. Refer to CHECK FOR INTERMITTENT PROBLEMS .
   MOMENTARY INTERRUPTION CHECK
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   FR Speed Open	FR speed sensor open detection / ERROR or NORMAL	ERROR: Momentary interruption NORMAL: Normal	-
   FL Speed Open	FL speed sensor open detection / ERROR or NORMAL	ERROR: Momentary interruption NORMAL: Normal	-

   OK

   There are no momentary interruptions.

   HINT: 

   Perform the above inspection before removing the sensor and connector.

NG → See step   4 

OK: Go to next step 

1. Turn the engine switch off.
2. Connect the Techstream to the DLC3.
3. Start the engine.
4. Select the Data List on the Techstream. Refer to DATA LIST / ACTIVE TEST .
   DATA LIST
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   FR Wheel Speed	FR wheel speed sensor reading / min.: 0 km/h (0 mph), max.: 326.4 km/h (202 mph)	When vehicle is stopped: 0 km/h (0 mph) When vehicle is being driven at a constant speed: No major fluctuation	Similar speed as indicated on speedometer
   FL Wheel Speed	FL wheel speed sensor reading /min.: 0 km/h (0 mph), max.: 326.4 km/h (202 mph)	When vehicle is stopped: 0 km/h (0 mph) When vehicle is being driven at a constant speed: No major fluctuation	Similar speed as indicated on speedometer

5. Check the speed value output from the speed sensor displayed on the Techstream.

   HINT: 

   Factors that affect the indicated vehicle speed include tire size, tire inflation, and tire wear. The speed indicated on the speedometer has an allowable margin of error. This can be tested using a speedometer tester (calibrated chassis dynamometer). For details about testing and the margin of error, see the reference chart. Refer to ON-VEHICLE INSPECTION .

   OK

   The speed value output from the speed sensor displayed on the Techstream is the similar speed as indicated on the speedometer.

NG → See step   4 

OK: Go to next step 

1. Turn the engine switch off.
2. Clear the DTCs. Refer to DTC CHECK / CLEAR .
3. Start the engine.
4. Drive the vehicle at a speed of 40 km/h (25 mph) or more for at least 60 seconds.
5. Check if the same DTC is recorded. Refer to DTC CHECK / CLEAR .

   Result

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

   HINT: 

   If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step. Refer to PROBLEM SYMPTOMS TABLE .

B → See step   12 

A → See step   10 

1. Turn the engine switch off.
   Fig 1: Checking Front Speed Sensor Installation

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Check the speed sensor installation (for 2WD).

   OK

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

3. Check the speed sensor installation (for 4WD).

   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

   Result	Proceed to
   OK (for 4WD)	A
   OK (for 2WD)	B
   NG (for 2WD)	C
   NG (for 4WD)	D

D → See step   14 

C → See step   13 

B → See step   7 

A: Go to next step 

1. Remove the front speed sensor. Refer to REMOVAL .
2. Check the speed sensor tip.

   OK

   No scratches, oil, or foreign matter on the sensor tip.

   NOTE:

   Check the speed sensor signal after cleaning or replacement. Refer to TEST MODE PROCEDURE .

NG → CLEAN OR REPLACE FRONT SPEED SENSOR 

OK: Go to next step 

1. Remove the front speed sensor rotor. Refer to REMOVAL .
2. Check the speed sensor rotor.

   OK

   No scratches, oil, or foreign matter on the rotors.

   NOTE:

   Check the speed sensor signal after cleaning or replacement. Refer to TEST MODE PROCEDURE .

   HINT: 

   The front speed sensor rotor is incorporated into the front axle hub sub-assembly.

   If the front speed sensor rotor needs to be replaced, replace it together with the front axle hub sub-assembly.

NG → CLEAN OR REPLACE FRONT SPEED SENSOR ROTOR 

OK: Go to next step 

1. Install the front speed sensor and the front speed sensor rotor.
   Fig 2: Identifying Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Make sure that there is no looseness at the locking part and the connecting part of the connectors.
3. Disconnect the front speed sensor connector and the skid control sensor wire.
4. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   for RH 

   for LH 

   Tester Connection	Condition	Specified Condition
   V1 ("A"-2) - V1 ("B"-1)	Always	Below 1 Ω
   V1 ("A"-2) - V1 ("B"-2)	Always	10 kΩ or higher
   V1 ("A"-2) - Body ground	Always	10 kΩ or higher
   V1 ("A"-1) - V1 ("B"-2)	Always	Below 1 Ω
   V1 ("A"-1) - V1 ("B"-1)	Always	10 kΩ or higher
   V1 ("A"-1) - Body ground	Always	10 kΩ or higher

   Tester Connection	Condition	Specified Condition
   W1 ("A"-2) - W1 ("B"-1)	Always	Below 1 Ω
   W1 ("A"-2) - W1 ("B"-2)	Always	10 kΩ or higher
   W1 ("A"-2) - Body ground	Always	10 kΩ or higher
   W1 ("A"-1) - W1 ("B"-2)	Always	Below 1 Ω
   W1 ("A"-1) - W1 ("B"-1)	Always	10 kΩ or higher
   W1 ("A"-1) - Body ground	Always	10 kΩ or higher

   NOTE:

   Check the speed sensor signal after replacement. Refer to TEST MODE PROCEDURE .

NG → REPLACE SKID CONTROL SENSOR WIRE 

OK: Go to next step 

1. Reconnect the skid control sensor wire.
   Fig 3: Identifying Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Make sure that there is no looseness at the locking part and the connecting part of the connectors.
3. Disconnect the skid control ECU connector.
4. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   for RH 

   for LH 

   Tester Connection	Condition	Specified Condition
   A58-7 (FR+) - V1-2 (FR+)	Always	Below 1 Ω
   A58-7 (FR+) - Body ground	Always	10 kΩ or higher
   A58-6 (FR-) - V1-1 (FR-)	Always	Below 1 Ω
   A58-6 (FR-) - Body ground	Always	10 kΩ or higher

   Tester Connection	Condition	Specified Condition
   A58-19 (FL+) - W1-2 (FL+)	Always	Below 1 Ω
   A58-19 (FL+) - Body ground	Always	10 kΩ or higher
   A58-18 (FL-) - W1-1 (FL-)	Always	Below 1 Ω
   A58-18 (FL-) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Reconnect the skid control ECU connector.
   Fig 4: Identifying Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Turn the engine switch on (IG).
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   for RH 

   for LH 

   Tester Connection	Switch Condition	Specified Condition
   V1-2 (FR+) - Body ground	Engine switch on (IG)	8 to 14 V

   Tester Connection	Switch Condition	Specified Condition
   W1-2 (FL+) - Body ground	Engine switch on (IG)	8 to 14 V

   Result

   Result	Proceed to
   OK (for 2WD)	A
   OK (for 4WD)	B
   NG	C

   NOTE:

   Check the speed sensor signal after replacement. Refer to TEST MODE PROCEDURE .

   HINT: 

   If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step. Refer to PROBLEM SYMPTOMS TABLE .

C → See step   12 

B → See step   15 

A → See step   11