DTC C0200/31: Front Speed Sensor RH Circuit; DTC C0205/32: Front Speed Sensor LH Circuit; DTC C1271/71: Low Output Signal of Front Speed Sensor RH (Test Mode DTC); DTC C1272/72: Low Output Signal of Front Speed Sensor LH (Test Mode DTC): 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 .
   MOMENTARY INTERRUPTION CHECK
   
   

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

   Result

   Result	Proceed to
   There are momentary interruptions	A
   There are no momentary interruptions	B
   There is a constant open circuit	C

   HINT: 

   Perform the above inspection before removing the sensor and connector.

C → See step   7 

B → See step   4 

A: Go to next step 

1. Turn the engine switch off.
2. Repair or replace the harness or connector.
3. Check for any momentary interruption between the skid control ECU and the front speed sensor. Refer to CHECK FOR INTERMITTENT PROBLEMS .
4. Check that there is no momentary interruption.

NEXT: 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 30 km/h (18 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 (C0200/31 and/or C0205/32) are output	A
   DTCs (C0200/31 and C0205/32) are not 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 → END 

A: 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 mode on the Techstream. Refer to DATA LIST / ACTIVE TEST .
   DATA LIST
   
   

   Tester Display	Measurement Item / Range	Normal Condition	Diagnostic Note
   FR Wheel Speed	Front wheel speed sensor RH reading / min.: 0 km/h (0 mph), max.: 326.4 km/h (202 mph)	Actual wheel speed	Similar speed as indicated on speedometer
   FL Wheel Speed	Front wheel speed sensor LH reading / min.: 0 km/h (0 mph), max.: 326.4 km/h (202 mph)	Actual wheel speed	Similar speed as indicated on speedometer

5. Check that there is almost no difference between the speed value output from the speed sensor displayed on the Techstream and the speed value displayed on the speedometer when driving the vehicle.

   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 almost the same as the actual vehicle speed.

   TESTER DISPLAY
   
   

   Tester Display	Measurement Item / Range	Normal Condition	Diagnostic Note
   FR Wheel Direction	Front wheel RH direction / FORWARD or BACK	FORWARD: Forward BACK: Backward	-
   FL Wheel Direction	Front wheel LH direction / FORWARD or BACK	FORWARD: Forward BACK: Backward	-

6. Check that the sensor signal conforms to the wheel rotation direction.

   OK

   The correct wheel rotation direction is displayed.

NG → See step   7 

OK: Go to next step 

1. Turn the engine switch off.
2. Perform sensor check in Test Mode Procedure. Refer to TEST MODE PROCEDURE .

   OK

   All Test Mode DTCs are cleared.

NG → See step   7 

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 30 km/h (18 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 (C0200/31 and C0205/32) are not output	A
   DTCs (C0200/31 and/or C0205/32) 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   14 

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.

   OK

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

   NOTE:

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

NG → See step   16 

OK: Go to next step 

1. Make sure that there is no looseness at the locking part and the connecting part of the connectors.
   Fig 2: Identifying Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the skid control sensor wire.
3. 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
   W3 ("A"-2) - W3 ("B"-2)	Always	Below 1 Ω
   W3 ("A"-2) - W3 ("B"-1)	Always	10 kΩ or higher
   W3 ("A"-2) - Body ground	Always	10 kΩ or higher
   W3 ("A"-1) - W3 ("B"-1)	Always	Below 1 Ω
   W3 ("A"-1) - W3 ("B"-2)	Always	10 kΩ or higher
   W3 ("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 and the front speed sensor 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
   A35-8 (FR+) - V1-2 (FR+)	Always	Below 1 Ω
   A35-8 (FR+) - Body ground	Always	10 kΩ or higher
   A35-7 (FR-) - V1-1 (FR-)	Always	Below 1 Ω
   A35-7 (FR-) - Body ground	Always	10 kΩ or higher

   Tester Connection	Condition	Specified Condition
   A35-9 (FL+) - W3-2 (FL+)	Always	Below 1 Ω
   A35-9 (FL+) - Body ground	Always	10 kΩ or higher
   A35-10 (FL-) - W3-1 (FL-)	Always	Below 1 Ω
   A35-10 (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)	7.5 to 14 V

   Tester Connection	Switch Condition	Specified Condition
   W3-2 (FL+) - Body ground	Engine switch on (IG)	7.5 to 14 V

NG → See step   15 

OK: Go to next step 

1. Turn the engine switch off.
2. Reconnect the front speed sensor connector.
3. Clear the DTCs. Refer to DTC CHECK / CLEAR .
4. Start the engine.
5. Drive the vehicle at a speed of 30 km/h (18 mph) or more for at least 60 seconds.
6. Check if the same DTC is recorded. Refer to DTC CHECK / CLEAR .

   Result

   Result	Proceed to
   DTCs (C0200/31 and/or C0205/32) are output	A
   DTCs (C0200/31 and C0205/32) are not 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   14 

A: Go to next step 

1. Turn the engine switch off.
2. Replace the front speed sensor. Refer to REMOVAL .
3. Replace the front axle hub sub-assembly (front speed sensor rotor). Refer to REMOVAL .

   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 with front speed sensor.

   NOTE:

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

NEXT: Go to next step 

1. Clear the DTCs. Refer to DTC CHECK / CLEAR .
2. Start the engine.
3. Drive the vehicle at a speed of 30 km/h (18 mph) or more for at least 60 seconds.
4. Check if the same DTC is recorded. Refer to DTC CHECK / CLEAR .

   Result

   Result	Proceed to
   DTCs (C0200/31 and/or C0205/32) are output	A
   DTCs (C0200/31 and C0205/32) are not 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 → END 

A → See step   15