Lexus ES manuals

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

  • The speed sensor signal is excessively noisy.
  • The calculated change in wheel speed is more than 980 m/s2 for 5*1 or 20*2 seconds or more.
  • The calculated change in wheel speed fluctuates between more than 500 m/s2 and less than -500 m/s2 for 5*1 or 20*2 seconds or more.
  • When the vehicle speed is low, excessive noise in the speed sensor pulse signal is detected 3 times or more within 0.005 seconds for 5*1 or 20*2 seconds or more.
  • Rear speed sensor LH (rear axle hub and bearing assembly LH)
  • Rear speed sensor rotor LH (rear axle hub and bearing assembly LH)
  • *1: The stop light switch assembly is OFF.
  • *2: The stop light switch assembly is ON.
DTC Detection Conditions: C050C1F
 

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

    1. Repair or replacement.
    2. Turn the engine switch on (IG).
    3. 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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NEXT

END

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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:

 Precaution

PRECAUTION PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL NOTICE: When disconnecting the cable from the negative (-) auxiliary battery terminal, initialize the following system(s) after the cable is reconnected: System See Procedure Lane Control System

 Adjustment

ADJUSTMENT CAUTION / NOTICE / HINT *a Centering Bolt *b Standard Bolt HINT: Centering bolts are used to install the hood hinges and hood lock. The hood and hood lock cannot be adjusted with the centering bolts installed. Substitute the centering bolts with standard bolts with washe

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