Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS
CHECK REAR SPEED SENSOR INSTALLATION
INSPECT REAR SPEED SENSOR ROTOR
READ VALUE USING GTS (RR/RL WHEEL SPEED)
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 ().
| DTC Code | DTC Detection Condition | Trouble Area |
| C1403 C1404 | One of the following conditions is met: At a vehicle speed of 10 km/h (6 mph) or more, the output voltage from one of the speed sensors is less than that from the other sensors for 15 seconds or more. 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. At a vehicle speed less than 10 km/h (6 mph), outputs from both rear speed sensors are 0 km/h (0 mph) for 15 seconds or more. | Rear speed sensor RH/LH Speed sensor rotor RH/LH Sensor installation |
| C1273 C1274 | Stored only during test mode. | Rear speed sensor RH/LH Speed sensor rotor RH/LH Sensor installation |
- HINT:
INSPECTION PROCEDURE
- NOTICE:
- Check the speed sensor signal after cleaning or replacement ().
| 1.CHECK REAR SPEED SENSOR INSTALLATION |
Turn the ignition switch off.
Check the speed sensor installation ().
- OK:
- There is no clearance between the sensor and the rear axle.
The installation nut is tightened properly.
| *1 | Rear Speed Sensor |
| *a | No clearance |
| *b | OK |
| *c | NG |
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| OK | |
| 2.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.
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| OK | |
| 3.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.
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| OK | |
| 4.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.
| 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).
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| OK | ||
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| 5.REPLACE REAR SPEED SENSOR |
Replace the rear speed sensor ().
| NEXT | |
| 6.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 or at least 60 seconds.
Check if the same DTC is output ().
| Result | Proceed to |
| DTC is not output | A |
| DTC is output | B |
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| A | ||
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