Lexus ES: Left Rear Wheel Speed Sensor Circuit Intermittent (C050C1F)
DESCRIPTION
Refer to DTC C050C12
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| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| C050C1F | Left Rear Wheel Speed Sensor Circuit Intermittent |
|
|
- *1: The stop light switch assembly is OFF.
- *2: The stop light switch assembly is ON.
| Vehicle Condition | |||||
|---|---|---|---|---|---|
| Pattern 1 | Pattern 2 | Pattern 3 | Pattern 4 | ||
| Diagnosis Condition | The Stop light switch assembly is OFF. | - | ○ | ○ | ○ |
| Malfunction Status | The speed sensor signal is excessively noisy. | ○ | - | - | - |
| The calculated change in wheel speed is more than 980 m/s2. | - | ○ | - | - | |
| The calculated change in wheel speed fluctuates between more than 500 m/s2 and less than -500 m/s2. | - | - | ○ | - | |
| The vehicle speed is low, excessive noise in the speed sensor pulse signal is detected 3 times or more within 0.005 seconds. | - | - | - | ○ | |
| Detection Time | - | 5 seconds or more. | 5 seconds or more. | 5 seconds or more. | |
| Number of Trips | 1 trip | 1 trip | 1 trip | 1 trip | |
HINT:
DTC will be output when conditions for either of the patterns in the table above are met.
DTC Detection Conditions: C050C1F| Vehicle Condition | ||||
|---|---|---|---|---|
| Pattern 5 | Pattern 6 | Pattern 7 | ||
| Diagnosis Condition | The stop light switch assembly is ON. | ○ | ○ | ○ |
| Malfunction Status | The calculated change in wheel speed is more than 980 m/s2. | ○ | - | - |
| The calculated change in wheel speed fluctuates between more than 500 m/s2 and less than -500 m/s2. | - | ○ | - | |
| The vehicle speed is low, excessive noise in the speed sensor pulse signal is detected 3 times or more within 0.005 seconds. | - | - | ○ | |
| Detection Time | 20 seconds or more. | 20 seconds or more. | 20 seconds or more. | |
| Number of Trips | 1 trip | 1 trip | 1 trip | |
HINT:
DTC will be output when conditions for either of the patterns in the table above are met.
CAUTION / NOTICE / HINT
NOTICE:
-
After replacing or removing and installing a speed sensor, perform Dealer Mode (Signal Check) inspection to confirm that the speed sensors are operating correctly.
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-
After replacing or removing and installing a speed sensor rotor, perform Dealer Mode (Signal Check) inspection to confirm that the speed sensors are operating correctly.
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-
DTC precaution
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Procedure to clear warning lights (When not clearing DTCs) Procedure
- Repair or replacement.
- Turn the engine switch on (IG).
- Drive the vehicle at 54 km/h (34 mph) or more for 3 seconds or more to clear the warning lights.
PROCEDURE
| 1. | REPLACE REAR AXLE HUB AND BEARING ASSEMBLY LH |
(a) Replace the rear axle hub and bearing assembly LH.
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Left Rear Wheel Speed Sensor Circuit Intermittent (C050C1F)
DESCRIPTION Refer to DTC C050C12 Click here DTC No. Detection Item DTC Detection Condition Trouble Area C050C1F Left Rear Wheel Speed Sensor Circuit Intermittent
The speed sensor
Left Rear Wheel Speed Sensor Circuit Short to Battery (C050C12)
DESCRIPTION Each speed sensor detects wheel speed and sends signals to the skid control ECU (brake actuator assembly). These signals are used by the ABS control. The speed sensor detects the magnetic
Left Rear Wheel Speed Sensor Circuit Short to Battery (C050C12)
DESCRIPTION Each speed sensor detects wheel speed and sends signals to the skid control ECU (brake actuator assembly). These signals are used by the ABS control. The speed sensor detects the magnetic
SEE MORE:
Parts Location
PARTS LOCATION ILLUSTRATION *1 MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) *2 COMBINATION METER ASSEMBLY *3 DLC3 *4 CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) *5 INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - ECU-B NO. 2 FUSE - DOOR F/L FUSE - DOOR F/R FUSE - DOOR R/L FUSE - DOO
Inspection
INSPECTION PROCEDURE 1. INSPECT OIL PUMP RELIEF VALVE (a) Coat the oil pump relief valve with engine oil, then check that it falls smoothly into the valve hole by its own weight. HINT: If the oil pump relief valve does not fall smoothly, replace the oil pump assembly. 2. INSPECT OIL P
