Dtc C1415 Rear Speed Sensor Rh Output Malfunction


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK HARNESS AND CONNECTOR (MOMENTARY INTERRUPTION)

READ VALUE USING INTELLIGENT TESTER (RR/RL WHEEL SPEED)

PERFORM TEST MODE (SIGNAL CHECK)

RECONFIRM DTC

CHECK REAR SPEED SENSOR INSTALLATION

INSPECT REAR SPEED SENSOR TIP

INSPECT REAR SPEED SENSOR ROTOR

INSPECT SKID CONTROL SENSOR WIRE

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

CHECK TERMINAL VOLTAGE (RR+, RL+)

RECONFIRM DTC

REPLACE REAR SPEED SENSOR

RECONFIRM DTC

DTC C1415 Rear Speed Sensor RH Output Malfunction

DTC C1277 Abnormal Change in Output Signal of Rear Speed Sensor RH (Test Mode DTC)

DTC C1278 Abnormal Change in Output Signal of Rear Speed Sensor LH (Test Mode DTC)

DTC C1416 Rear Speed Sensor LH Output Malfunction


DESCRIPTION

Refer to DTCs C1401 and C1402 (LandCruiser RM000000XI910IX_01.html).

DTC Code
DTC Detection Condition
Trouble Area
C1415
C1416
One of the following conditions is met:
  1. An open in the sensor signal circuit of a malfunctioning area occurs 255 times or more.
  2. 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.
  3. At a vehicle speed of 10 km/h (6 mph) or more, noise occurs once per rotor rotation for 15 seconds or more.
  1. Rear speed sensor RH/LH
  2. Rear skid control sensor wire
  3. Speed sensor circuit
  4. Rear speed sensor rotor RH/LH
  5. Master cylinder solenoid (Skid control ECU)
C1277
C1278
Stored only during test mode.
  1. Rear speed sensor RH/LH
  2. Rear speed sensor rotor RH/LH
HINT:
  1. DTCs C1415 and C1277 are for the rear speed sensor RH.
  2. DTCs C1416 and C1278 are for the rear speed sensor LH.

WIRING DIAGRAM

Refer to DTCs C1407 and C1408 (LandCruiser RM00000369308SX_02.html).

INSPECTION PROCEDURE

NOTICE:
  1. When replacing the master cylinder solenoid, perform calibration (LandCruiser RM00000452J00ZX.html).
  2. Check the speed sensor signal after cleaning or replacement (LandCruiser RM00000452K011X.html).
1.CHECK HARNESS AND CONNECTOR (MOMENTARY INTERRUPTION)

  1. Using the intelligent tester, check for any momentary interruption in the wire harness and connector corresponding to the DTC (LandCruiser RM000001DX102MX.html).

    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.


NG
Go to step 9
OK


2.READ VALUE USING INTELLIGENT TESTER (RR/RL WHEEL SPEED)

  1. Turn the ignition switch off.

  1. Connect the intelligent tester to the DLC3.

  1. Start the engine.

  1. Turn the intelligent tester on.

  1. 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.

  1. Check that there is no difference between the speed value output from the speed sensor displayed on the intelligent tester 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 (LandCruiser RM000002Z4Q040X.html).
    OK:
    The speed value output from the speed sensor displayed on the intelligent tester is the same as the actual vehicle speed measured using a speedometer tester (calibrated chassis dynamometer).


NG
Go to step 5
OK


3.PERFORM TEST MODE (SIGNAL CHECK)

  1. Turn the ignition switch to ON.

  1. Perform the sensor check in the Test Mode Procedure (LandCruiser RM00000452K011X.html).

    OK:
    All test mode DTCs are cleared.


NG
Go to step 5
OK


4.RECONFIRM DTC

  1. Turn the ignition switch to ON.

  1. Clear the DTC (LandCruiser RM0000046KV016X.html).

  1. Start the engine.

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

  1. Check if the same DTC is output (LandCruiser RM0000046KV016X.html).

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


B
Go to step 12
A

USE SIMULATION METHOD TO CHECK (LandCruiser RM000003YMJ00XX.html)

5.CHECK REAR SPEED SENSOR INSTALLATION

  1. Turn the ignition switch off.



    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Brake Control Dynamic Control Systems.Anti-Lock Brake System. Dtc C1415 Rear Speed Sensor Rh Output Malfunction

  1. Check the speed sensor installation (LandCruiser RM000001B2E029X.html).

    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


NG
INSTALL REAR SPEED SENSOR CORRECTLY
OK


6.INSPECT REAR SPEED SENSOR TIP

  1. Remove the rear speed sensor (LandCruiser RM000001B2G023X.html).

  1. 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.


NG
CLEAN OR REPLACE REAR SPEED SENSOR
OK


7.INSPECT REAR SPEED SENSOR ROTOR

  1. Remove the rear axle hub and bearing assembly (LandCruiser RM0000016XE018X.html).

  1. 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.


NG
CLEAN OR REPLACE REAR SPEED SENSOR ROTOR
OK


8.INSPECT SKID CONTROL SENSOR WIRE

Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Brake Control Dynamic Control Systems.Anti-Lock Brake System. Dtc C1415 Rear Speed Sensor Rh Output Malfunction


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

  1. Remove the skid control sensor wire (LandCruiser RM000001B2G023X.html).

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

    Standard Resistance:
    for RH
    Tester Connection
    		Condition
    		Specified Condition
    Sq1-4 - q1-2 (RR+)
    		Always
    		Below 1 Ω
    Sq1-3 - q1-1 (RR-)
    		Always
    		Below 1 Ω
    Sq1-4 - Sq1-3
    		Always
    		10 kΩ or higher
    Sq1-4 - Sq1-1
    		Always
    		10 kΩ or higher
    Sq1-4 - Sq1-2
    		Always
    		10 kΩ or higher
    for LH
    Tester Connection
    		Condition
    		Specified Condition
    Sq1-2 - q2-2 (RL+)
    		Always
    		Below 1 Ω
    Sq1-1 - q2-1 (RL-)
    		Always
    		Below 1 Ω
    Sq1-2 - Sq1-1
    		Always
    		10 kΩ or higher
    Sq1-2 - Sq1-3
    		Always
    		10 kΩ or higher
    Sq1-2 - Sq1-4
    		Always
    		10 kΩ or higher


NG
REPLACE SKID CONTROL SENSOR WIRE (LandCruiser RM000001B2G023X.html)
OK


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

  1. Install the skid control sensor wire.

  1. Disconnect the A7 skid control ECU connector.

  1. Disconnect the q1 and/or q2 speed sensor connector.

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

    Standard Resistance:
    for RH
    Tester Connection
    		Condition
    		Specified Condition
    A7-5 (RR+) - q1-2 (RR+)
    		Always
    		Below 1 Ω
    A7-5 (RR+) - Body ground
    		Always
    		10 kΩ or higher
    A7-19 (RR-) - q1-1 (RR-)
    		Always
    		Below 1 Ω
    A7-19 (RR-) - Body ground
    		Always
    		10 kΩ or higher
    for LH
    Tester Connection
    		Condition
    		Specified Condition
    A7-20 (RL+) - q2-2 (RL+)
    		Always
    		Below 1 Ω
    A7-20 (RL+) - Body ground
    		Always
    		10 kΩ or higher
    A7-6 (RL-) - q2-1 (RL-)
    		Always
    		Below 1 Ω
    A7-6 (RL-) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


10.CHECK TERMINAL VOLTAGE (RR+, RL+)

  1. Disconnect the q1 and/or q2 speed sensor connector.

  1. Connect the A7 skid control ECU connector.



    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Brake Control Dynamic Control Systems.Anti-Lock Brake System. Dtc C1415 Rear Speed Sensor Rh Output Malfunction

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

    Standard Voltage:
    for RH
    Tester Connection
    		Switch Condition
    		Specified Condition
    q1-2 (RR+) - Body ground
    		Ignition switch ON
    		11 to 14 V
    for LH
    Tester Connection
    		Switch Condition
    		Specified Condition
    q2-2 (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


B
REPLACE MASTER CYLINDER SOLENOID (LandCruiser RM00000171U02DX.html)

C
REPLACE MASTER CYLINDER SOLENOID (LandCruiser RM00000171U02EX.html)
A


11.RECONFIRM DTC

  1. Turn the ignition switch to ON.

  1. Clear the DTCs (LandCruiser RM0000046KV016X.html).

  1. Start the engine.

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

  1. Check if the same DTC is output (LandCruiser RM0000046KV016X.html).

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


B
Go to step 12
A

USE SIMULATION METHOD TO CHECK (LandCruiser RM000003YMJ00XX.html)

12.REPLACE REAR SPEED SENSOR

  1. Replace the rear speed sensor (LandCruiser RM000001B2G023X.html).


NEXT


13.RECONFIRM DTC

  1. Turn the ignition switch to ON.

  1. Clear the DTCs (LandCruiser RM0000046KV016X.html).

  1. Start the engine.

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

  1. Check if the same DTC is output (LandCruiser RM0000046KV016X.html).

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


B
REPLACE REAR AXLE HUB AND BEARING ASSEMBLY (LandCruiser RM0000016XF017X.html)
A

END