DTC Code	DTC Detection Condition	Trouble Area
C1413 C1414	One of the following conditions is met: An open in the sensor signal circuit of a malfunctioning area occurs 255 times or more. At a vehicle speed of 20 km/h (12 mph) or more, noise occurs in the sensor signals of a malfunctioning wheel 75 times or more within 5 seconds. At a vehicle speed of 10 km/h (6 mph) or more, noise occurs once per rotor rotation for 15 seconds or more.	Front speed sensor RH/LH Skid control sensor wire Speed sensor circuit Speed sensor rotor Skid control ECU (Master cylinder solenoid)
C1275 C1276	Stored only during test mode.	Front speed sensor RH/LH Speed sensor rotor

HINT:

DTCs C1413 and C1275 are for the front speed sensor RH.

DTCs C1414 and C1276 are for the front speed sensor LH.

WIRING DIAGRAM

Refer to DTCs C1405 and C1406 ().

INSPECTION PROCEDURE

NOTICE:

After replacing the master cylinder solenoid, perform zero point calibration ().

Check the speed sensor signal after cleaning or replacement ().

1.CHECK HARNESS AND CONNECTOR (MOMENTARY INTERRUPTION)

Using the GTS, check for any momentary interruption in the wire harness and connector corresponding to the DTC ().

ABS/VSC/TRC
Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
FR Speed Open	Front speed sensor RH open detection/ Error or Normal	Normal	-
FL Speed Open	Front speed sensor LH open detection/ Error or Normal	Normal	-

OK:
Normal (there are no momentary interruptions).

HINT:

Perform the above inspection before removing the sensor and connector.

Go to step 9

OK

2.READ VALUE USING GTS (FR/FL WHEEL SPEED)

Turn the ignition switch off.

Connect the GTS to the DLC3.

Start the engine.

Turn the GTS on.

Enter the following menus: Chassis / ABS/VSC/TRC / Data List.

ABS/VSC/TRC
Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
FR Wheel Speed	Front speed sensor RH reading/ Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)	Actual wheel speed	No large fluctuations when driving at a constant speed.
FL Wheel Speed	Front speed sensor LH reading/ Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)	Actual wheel speed	No large fluctuations when driving at a constant speed.

Check that there is no difference between the speed value output from the speed sensor displayed on the GTS 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, refer to the reference chart ().

OK:
The speed value output from the speed sensor displayed on the GTS is the same as the actual vehicle speed measured using a speedometer tester (calibrated chassis dynamometer).

Go to step 5

OK

3.PERFORM TEST MODE (SIGNAL CHECK)

Perform the sensor check in the Test Mode Procedure ().

OK:
All test mode DTCs are cleared.

Go to step 5

OK

4.RECONFIRM DTC

Clear the DTCs ().

Turn the ignition switch off.

Start the engine.

Drive the vehicle at a speed of 40 km/h (25 mph) or more for at least 60 seconds.

Check if the same DTC is output ().

Result
Result	Proceed to
DTC is not output	A
DTC is output	B

Go to step 12

CHECK FOR INTERMITTENT PROBLEMS ()

5.CHECK FRONT SPEED SENSOR INSTALLATION

Turn the ignition switch off.

Dtc C1413 Front Speed Sensor Rh Output Malfunction. BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Check the speed sensor installation ().

OK:
There is no clearance between the sensor and the front steering knuckle.
The installation bolt is tightened properly.

Text in Illustration
*1	Front Speed Sensor
*a	No clearance
*b	OK
*c	NG

INSTALL FRONT SPEED SENSOR CORRECTLY

OK

6.INSPECT FRONT SPEED SENSOR TIP

Remove the front speed sensor ().

Check the speed sensor tip.

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

NOTICE:

If no damage to the speed sensor tip is found during this inspection, do not replace the speed sensor.

CLEAN OR REPLACE FRONT SPEED SENSOR

OK

7.INSPECT FRONT SPEED SENSOR ROTOR

Remove the front axle hub sub-assembly ().

Check the speed sensor rotor.

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

HINT:

The front speed sensor rotor is incorporated into the front axle with ABS rotor bearing assembly.

If the front speed sensor rotor needs to be replaced, replace it together with the front axle with ABS rotor bearing assembly.

CLEAN OR REPLACE FRONT SPEED SENSOR ROTOR

OK

8.INSPECT SKID CONTROL SENSOR WIRE

Remove the skid control sensor wire ().

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

Standard Resistance:
for RH
Tester Connection Condition Specified Condition
Az2-1 - z17-1 (FR-) Always Below 1 Ω
Az2-5 - z17-2 (FR+) Always Below 1 Ω
z17-1 (FR-) - z17-2 (FR+) Always 10 kΩ or higher
for LH
Tester Connection Condition Specified Condition
Az1-1 - z18-1 (FL-) Always Below 1 Ω
Az1-5 - z18-2 (FL+) Always Below 1 Ω
z18-1 (FL-) - z18-2 (FL+) Always 10 kΩ or higher

Text in Illustration
*A	for RH
*B	for LH
*1	Skid Control Sensor Wire

REPLACE SKID CONTROL SENSOR WIRE ()

OK

9.CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - FRONT SPEED SENSOR)

Install the skid control sensor wire.

Disconnect the A24 skid control ECU (master cylinder solenoid) connector.

Disconnect the z17 and/or z18 speed sensor connector.

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

Standard Resistance:

for RH
Tester Connection	Condition	Specified Condition
A24-3 (FR+) - z17-2 (FR+)	Always	Below 1 Ω
A24-3 (FR+) - Body ground	Always	10 kΩ or higher
A24-17 (FR-) - z17-1 (FR-)	Always	Below 1 Ω
A24-17 (FR-) - Body ground	Always	10 kΩ or higher

for LH
Tester Connection	Condition	Specified Condition
A24-18 (FL+) - z18-2 (FL+)	Always	Below 1 Ω
A24-18 (FL+) - Body ground	Always	10 kΩ or higher
A24-4 (FL-) - z18-1 (FL-)	Always	Below 1 Ω
A24-4 (FL-) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

10.CHECK HARNESS AND CONNECTOR (FR+/FL+ TERMINAL)

Disconnect the speed sensor connector.

Connect the A24 skid control ECU (master cylinder solenoid) connector.

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

Standard Voltage:
for RH
Tester Connection Switch Condition Specified Condition
z17-2 (FR+) - Body ground Ignition switch ON 11 to 14 V
for LH
Tester Connection Switch Condition Specified Condition
z18-2 (FL+) - Body ground Ignition switch ON 11 to 14 V

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

Result
Result	Proceed to
OK	A
NG (for LHD)	B
NG (for RHD)	C

REPLACE MASTER CYLINDER SOLENOID ()

A

11.RECONFIRM DTC

Clear the DTC ().

Turn the ignition switch off.

Start the engine.

Drive the vehicle at a speed of 40 km/h (25 mph) or more for at least 60 seconds.

Check if the same DTC is output ().

Result
Result	Proceed to
DTC is not output	A
DTC is output	B

Go to step 12

CHECK FOR INTERMITTENT PROBLEMS ()

12.REPLACE FRONT SPEED SENSOR

Replace the front speed sensor ().

NEXT

13.RECONFIRM DTC

Clear the DTC ().

Turn the ignition switch off.

Start the engine.

Drive the vehicle at a speed of 40 km/h (25 mph) or more for at least 60 seconds.

Check if the same DTC is output ().

Result
Result	Proceed to
DTC is not output	A
DTC is output	B

REPLACE FRONT AXLE WITH ABS ROTOR BEARING ASSEMBLY ()

END

BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS

Land Cruiser URJ200 URJ202 GRJ200 VDJ200

ANTI-LOCK BRAKE SYSTEM

Tester Connection	Switch Condition	Specified Condition
z17-2 (FR+) - Body ground	Ignition switch ON	11 to 14 V