Dtc C1403 Rear Speed Sensor Rh Malfunction


DESCRIPTION

INSPECTION PROCEDURE

CHECK REAR SPEED SENSOR INSTALLATION

CHECK REAR SPEED SENSOR TIP

CHECK REAR SPEED SENSOR ROTOR

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

REPLACE REAR SPEED SENSOR

RECONFIRM DTC

DTC C1403 Rear Speed Sensor RH Malfunction

DTC C1273 Low Output Signal of Rear Speed Sensor RH (Test Mode DTC)

DTC C1274 Low Output Signal of Rear Speed Sensor LH (Test Mode DTC)

DTC C1404 Rear Speed Sensor LH Malfunction


DESCRIPTION

Refer to DTCs C1401 and C1402 (LandCruiser RM000000XI910GX.html).

DTC Code
DTC Detection Condition
Trouble Area
C1403
C1404
One of the following conditions is met:
  1. At a vehicle speed of 10 km/h (6 mph) or more, the output voltage from one of the speed sensors is below that from the other sensors for 15 seconds or more.
  2. At a vehicle speed of less than 10 km/h (6 mph), the output from one of the speed sensors is 0 km/h (0 mph) for 1 second or more.
  3. At a vehicle speed of less than 10 km/h (6 mph), the outputs from both rear speed sensors are 0 km/h (0 mph) for a cumulative time of 200 seconds.
  1. Rear speed sensor RH/LH
  2. Rear speed sensor rotor RH/LH
  3. Sensor installation
C1273
C1274
Detect only during test mode.
  1. Rear speed sensor RH/LH
  2. Rear speed sensor rotor RH/LH
  3. Sensor installation
HINT:
  1. DTC C1403 is for the rear speed sensor RH.
  2. DTC C1404 is for the rear speed sensor LH.

INSPECTION PROCEDURE

NOTICE:
Check the speed sensor signal after cleaning or replacement (LandCruiser RM000000XHT0EOX.html).
1.CHECK REAR SPEED SENSOR INSTALLATION


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Brake Control Dynamic Control Systems.Anti-Lock Brake System. Dtc C1403 Rear Speed Sensor Rh Malfunction

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

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


NG
INSTALL REAR SPEED SENSOR CORRECTLY (LandCruiser RM000001B2E029X.html)
OK


2.CHECK 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


3.CHECK 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


4.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 value/ min.: 0 km/h (0 mph), max.: 326 km/h (202 mph)
    		Actual wheel speed
    		Changes continuously during acceleration/deceleration.
    RL Wheel Speed
    		Rear speed sensor LH value/ min.: 0 km/h (0 mph), max.: 326 km/h (202 mph)
    		Actual wheel speed
    		Changes continuously during acceleration/deceleration.

  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 (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

USE SIMULATION METHOD TO CHECK (LandCruiser RM000003YMJ00XX.html)

5.REPLACE REAR SPEED SENSOR

  1. Turn the ignition switch off.

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


NEXT


6.RECONFIRM DTC

  1. Clear the DTCs (LandCruiser RM000000XHV0KDX.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 RM000000XHV0KDX.html).

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


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

END