Dtc C1415 Rear Speed Sensor Rh Output Malfunction

Brake. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
Brake Control Dynamic Control Systems. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

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 SKID CONTROL ROTOR

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

CHECK TERMINAL VOLTAGE (SENSOR POWER SUPPLY VOLTAGE TERMINAL)

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 (HILUX_TGN26 RM000000XI90JWX_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 occurs 255 times or more.
  2. At a vehicle speed of 20 km/h (12 mph) or more, noise occurs in the sensor signals 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. Speed sensor circuit
  3. Rear skid control rotor RH/LH
  4. Skid control ECU (Brake actuator assembly)
C1277
C1278
Stored during Test Mode.
  1. Rear speed sensor RH/LH
  2. Rear skid control 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 (HILUX_TGN26 RM00000369303OX_02.html).

INSPECTION PROCEDURE

NOTICE:
  1. After replacing the brake actuator assembly, perform calibration (HILUX_TGN26 RM000000XHR073X.html).
  2. Check the speed sensor signal after replacement (HILUX_TGN26 RM000000XHT091X.html).
  3. Before disconnecting the connector, make sure that there are no problems with the connection.
  4. After disconnecting the connector, make sure that the connector case and terminals are not deformed or corroded.
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 (HILUX_TGN26 RM000000XHS0AGX.html).

    ABS/VSC/TRC
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    RR Speed Open
    		Rear speed sensor RH open circuit detection / Error or Normal
    		Normal
    		-
    RL Speed Open
    		Rear speed sensor LH open circuit detection / Error or Normal
    		Normal
    		-
    OK:
    Normal (there are no momentary interruptions).
    HINT:
    Perform the above inspection before removing the sensor or disconnecting a connector.


NG
Go to step 8
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, and then drive the vehicle.

    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 the speed value output from the speed sensor displayed on the intelligent tester.

    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 (HILUX_TGN26 RM000002Z4Q01WX.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. Perform the signal check in the Test Mode procedure (HILUX_TGN26 RM000000XHT091X.html).

    OK:
    All Test Mode DTCs are cleared.


NG
Go to step 5
OK


4.RECONFIRM DTC

  1. Clear the DTCs (HILUX_TGN26 RM000000XHV0CGX.html).

  1. Turn the ignition switch off.

  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 (HILUX_TGN26 RM000000XHV0CGX.html).

    Result
    Result
    		Proceed to
    DTC is not output
    		A
    DTC is output
    		B
    HINT:
    If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next suspected area (HILUX_TGN26 RM000000XHN0BLX.html).


B
REPLACE BRAKE ACTUATOR ASSEMBLY (HILUX_TGN26 RM0000010K000WX.html)
A

USE SIMULATION METHOD TO CHECK (HILUX_TGN26 RM000004QR7002X.html)

5.CHECK REAR SPEED SENSOR INSTALLATION

  1. Turn the ignition switch off.



    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.Brake Control Dynamic Control Systems.Anti-Lock Brake System. Dtc C1415 Rear Speed Sensor Rh Output Malfunction

  1. Check the speed sensor installation (HILUX_TGN26 RM0000010JQ01WX.html).

    Text in Illustration
    *1
    		Rear Speed Sensor
    *a
    		No clearance
    *b
    		CORRECT
    *c
    		INCORRECT
    OK:
    The installation bolt is tightened properly.
    There is no clearance between the sensor and rear axle housing.


NG
INSTALL REAR SPEED SENSOR CORRECTLY (HILUX_TGN26 RM0000010JQ01WX.html)
OK


6.INSPECT REAR SPEED SENSOR TIP

  1. Turn the ignition switch off.

  1. Remove the rear speed sensor (HILUX_TGN26 RM0000010JT01KX.html).

  1. Check the speed sensor tip.

    OK:
    No scratches, oil or foreign matter on the sensor tip.
    NOTICE:
    Do not replace the speed sensor if no damage to the speed sensor tip is found.
    HINT:
    1. If the sensor is contaminated with oil or other foreign material, clean the sensor.
    2. If there is iron powder sticking to the rotor, this will result in a malfunction. Therefore, confirm that the rotor is not contaminated with foreign material before replacing the sensor.


NG
CLEAN OR REPLACE REAR SPEED SENSOR
OK


7.INSPECT REAR SKID CONTROL ROTOR

  1. Turn the ignition switch off.

  1. Remove the rear axle shaft with backing plate (HILUX_TGN26 RM000000ZZV01EX.html).

  1. Check the rear skid control rotor.

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


NG
CLEAN OR REPLACE REAR SKID CONTROL ROTOR
OK


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

  1. Turn the ignition switch off.

  1. Disconnect the skid control ECU (brake actuator assembly) connector.

  1. Disconnect the 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
    A36-17 (RR+) - L7-2
    		Always
    		Below 1 Ω
    A36-17 (RR+) - Body ground
    		Always
    		10 kΩ or higher
    A36-16 (RR-) - L7-1
    		Always
    		Below 1 Ω
    A36-16 (RR-) - Body ground
    		Always
    		10 kΩ or higher
    for LH
    Tester Connection
    		Condition
    		Specified Condition
    A36-5 (RL+) - L3-2
    		Always
    		Below 1 Ω
    A36-5 (RL+) - Body ground
    		Always
    		10 kΩ or higher
    A36-4 (RL-) - L3-1
    		Always
    		Below 1 Ω
    A36-4 (RL-) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


9.CHECK TERMINAL VOLTAGE (SENSOR POWER SUPPLY VOLTAGE TERMINAL)

  1. Turn the ignition switch off.

  1. Connect the skid control ECU (brake actuator assembly) connector.

  1. Disconnect the speed sensor connector.



    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.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
    L7-2 - Body ground
    		Ignition switch ON
    		8 to 14 V
    for LH
    Tester Connection
    		Switch Condition
    		Specified Condition
    L3-2 - Body ground
    		Ignition switch ON
    		8 to 14 V
    Text in Illustration
    *A
    		for RH
    *B
    		for LH
    *a
    		Front view of wire harness connector
    (to Rear Speed Sensor)


NG
REPLACE BRAKE ACTUATOR ASSEMBLY (HILUX_TGN26 RM0000010K000WX.html)
OK


10.RECONFIRM DTC

  1. Clear the DTCs (HILUX_TGN26 RM000000XHV0CGX.html).

  1. Turn the ignition switch off.

  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 (HILUX_TGN26 RM000000XHV0CGX.html).

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


B
Go to step 11
A

USE SIMULATION METHOD TO CHECK (HILUX_TGN26 RM000004QR7002X.html)

11.REPLACE REAR SPEED SENSOR

  1. Turn the ignition switch off.

  1. Replace the rear speed sensor (HILUX_TGN26 RM0000010JT01KX.html).


NEXT


12.RECONFIRM DTC

  1. Clear the DTCs (HILUX_TGN26 RM000000XHV0CGX.html).

  1. Turn the ignition switch off.

  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 (HILUX_TGN26 RM000000XHV0CGX.html).

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


B
REPLACE REAR SKID CONTROL ROTOR (HILUX_TGN26 RM000000ZZV01EX.html)
A

END