DTC Code	DTC Detection Condition	Trouble Area
C1415 C1416	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.	Rear speed sensor RH/LH Skid control sensor wire Speed sensor circuit Speed sensor rotor Skid control ECU (Master cylinder solenoid)
C1277 C1278	Stored only during test mode.	Rear speed sensor RH/LH Speed sensor rotor

HINT:

DTCs C1415 and C1277 are for the rear speed sensor RH.

DTCs C1416 and C1278 are for the rear speed sensor LH.

WIRING DIAGRAM

Refer to DTCs C1407 and C1408 ().

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
RR Speed Open	Rear speed sensor RH open detection/ Error or Normal	Normal	-
RL Speed Open	Rear 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 (RR/RL 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
RR Wheel Speed	Rear 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.
RL Wheel Speed	Rear 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, see 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 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 ()

5.CHECK REAR SPEED SENSOR INSTALLATION

Turn the ignition switch off.

Dtc C1415 Rear 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 rear axle.
The installation nut is tightened properly.

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

INSTALL REAR SPEED SENSOR CORRECTLY

OK

6.INSPECT REAR SPEED SENSOR TIP

Remove the rear 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 REAR SPEED SENSOR

OK

7.INSPECT REAR SPEED SENSOR ROTOR

Remove the rear axle shaft together with the parking brake plate ().

Check the speed sensor rotor.

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

HINT:

The rear speed sensor rotor is incorporated into the rear axle hub and bearing assembly.

If the rear speed sensor rotor needs to be replaced, replace it together with the rear axle hub and bearing assembly.

CLEAN OR REPLACE REAR SPEED SENSOR ROTOR

OK

8.INSPECT SKID CONTROL SENSOR WIRE

Dtc C1415 Rear Speed Sensor Rh Output Malfunction. BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Text in Illustration
*A	for RH	*B	for LH
*1	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
Nz1-4 - z19-2 (RR+)	Always	Below 1 Ω
Nz1-3 - z19-1 (RR-)	Always	Below 1 Ω
Nz1-4 - Nz1-3	Always	10 kΩ or higher
Nz1-4 - Nz1-1	Always	10 kΩ or higher
Nz1-4 - Nz1-2	Always	10 kΩ or higher

for LH
Tester Connection	Condition	Specified Condition
Nz1-2 - z20-2 (RL+)	Always	Below 1 Ω
Nz1-1 - z20-1 (RL-)	Always	Below 1 Ω
Nz1-2 - Nz1-1	Always	10 kΩ or higher
Nz1-2 - Nz1-3	Always	10 kΩ or higher
Nz1-2 - Nz1-4	Always	10 kΩ or higher

REPLACE SKID CONTROL SENSOR WIRE ()

OK

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

Install the skid control sensor wire.

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

Disconnect the z19 and/or z20 speed sensor connector.

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

Standard Resistance:

for RH
Tester Connection	Condition	Specified Condition
A24-5 (RR+) - z19-2 (RR+)	Always	Below 1 Ω
A24-5 (RR+) - Body ground	Always	10 kΩ or higher
A24-19 (RR-) - z19-1 (RR-)	Always	Below 1 Ω
A24-19 (RR-) - Body ground	Always	10 kΩ or higher

for LH
Tester Connection	Condition	Specified Condition
A24-20 (RL+) - z20-2 (RL+)	Always	Below 1 Ω
A24-20 (RL+) - Body ground	Always	10 kΩ or higher
A24-6 (RL-) - z20-1 (RL-)	Always	Below 1 Ω
A24-6 (RL-) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

10.CHECK HARNESS AND CONNECTOR (RR+/RL+ TERMINAL)

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

Disconnect the speed sensor connector.

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

Standard Voltage:
for RH
Tester Connection Switch Condition Specified Condition
z19-2 (RR+) - Body ground Ignition switch ON 11 to 14 V
for LH
Tester Connection Switch Condition Specified Condition
z20-2 (RL+) - 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 Rear 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 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 ()

12.REPLACE REAR SPEED SENSOR

Replace the rear speed sensor ().

NEXT

13.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

REPLACE REAR AXLE HUB AND BEARING ASSEMBLY ()

END

BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS

Land Cruiser URJ200 URJ202 GRJ200 VDJ200

ANTI-LOCK BRAKE SYSTEM

Tester Connection	Switch Condition	Specified Condition
z19-2 (RR+) - Body ground	Ignition switch ON	11 to 14 V