Last Modified: 07-31-2024 |
6.11:8.1.0 |
Doc ID: RM1000000025DSZ |
Model Year Start: 2023 |
Model: Corolla |
Prod Date Range: [09/2022 -
] |
Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HV Model): C05001F; Left Front Wheel Speed Sensor Circuit Intermittent; 2023 - 2025 MY Corolla Corolla HV [09/2022 - ] |
DTC
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C05001F
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Left Front Wheel Speed Sensor Circuit Intermittent
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DESCRIPTION
Refer to DTC C050012
Click here
DTC No.
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Detection Item
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DTC Detection Condition
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Trouble Area
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MIL
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DTC Output from
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Note
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C05001F
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Left Front Wheel Speed Sensor Circuit Intermittent
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-
The speed sensor signal is excessively noisy.
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The calculated change in wheel speed is more than 980 m/s2 for 5*1 or 20*2 seconds or more.
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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.
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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.
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Front speed sensor LH
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Front speed sensor rotor LH (front axle hub sub-assembly LH)
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Comes on
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Brake/EPB
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SAE Code: C0504 (Case 1 and 2)
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Output ECU: Skid control ECU (brake actuator assembly)
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*1: The stop light switch assembly is OFF.
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*2: The stop light switch assembly is ON.
MONITOR DESCRIPTION
C0504 (Case 1):
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When any of the following conditions are met, the skid control ECU (brake actuator assembly) illuminates the MIL and stores this DTC.
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The acceleration (change over a certain amount of time) of the respective wheel is more than a certain amount.
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The amplitude of acceleration (change over a certain amount of time) is a certain amount or more.
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Noise in the respective wheel speed pulse occurs a certain number of times or more.
C0504 (Case 2):
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If extremely large noise occurs in the output signal from the speed sensor, the skid control ECU (brake actuator assembly) illuminates the MIL and stores this DTC.
MONITOR STRATEGY
Related DTCs
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C0504 (Case 1): Wheel speed sensor noise monitoring (FL)
C0504 (Case 2): Wheel speed sensor direct memory access buffer noise monitoring for FL
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Required Sensors/Components(Main)
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Speed sensor
Skid control ECU (brake actuator assembly)
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Required Sensors/Components(Related)
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Skid control ECU (brake actuator assembly)
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Frequency of Operation
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Continuous
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Duration
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0.03 seconds: C0504 (Case 2)
1 second: C0504 (Case 1)*1
5 seconds: C0504 (Case 1)*2
20 seconds: C0504 (Case 1)*3
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MIL Operation
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2 driving cycles
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Sequence of Operation
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None
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TYPICAL ENABLING CONDITIONS
Monitor runs whenever the following DTCs are not stored
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TMC's intellectual property
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Other conditions belong to TMC's intellectual property
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-
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TYPICAL MALFUNCTION THRESHOLDS
TMC's intellectual property
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-
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COMPONENT OPERATING RANGE
TMC's intellectual property
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-
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CONFIRMATION DRIVING PATTERN
NOTICE:
When performing the normal judgment procedure, make sure that the driver door is closed and is not opened at any time during the procedure.
HINT:
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After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
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When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
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Connect the GTS to the DLC3.
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Turn the ignition switch to ON and turn the GTS on.
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Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
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Turn the ignition switch off.
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Turn the ignition switch to ON (READY) and turn the GTS on.
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Wait for 3 seconds or more. [*]
HINT:
[*]: Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
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Enter the following menus: Chassis / Brake/EPB* / Utility / All Readiness.
*: Electric Parking Brake System
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Check the DTC judgment result.
HINT:
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If the judgment result shows NORMAL, the system is normal.
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If the judgment result shows ABNORMAL, the system has a malfunction.
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If the judgment result shows INCOMPLETE, perform driving pattern again.
CAUTION / NOTICE / HINT
NOTICE:
DTC precaution
Click here
Procedure to clear warning lights (When not clearing DTCs)
Procedure
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Repair or replacement.
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Turn the ignition switch to ON.
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Drive the vehicle at 54 km/h (34 mph) or more for 3 seconds or more to clear the warning lights.
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PROCEDURE
1.
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CHECK FRONT SPEED SENSOR LH (CHECK FOR FOREIGN MATTER)
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(a) Remove the front speed sensor LH.
Click here
(b) Check the front speed sensor LH.
OK:
The front speed sensor LH tip is free of oil and foreign matter.
HINT:
If foreign matter of 1 mm (0.03937 in.) x 1 mm (0.03937 in.) or more is adhered to the front speed sensor LH, this DTC may be stored.
OK
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2.
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CHECK FRONT SPEED SENSOR ROTOR LH (CHECK FOR FOREIGN MATTER)
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(a) Remove the component with the front speed sensor rotor LH.
Click here
(b) Check the front speed sensor rotor LH.
OK:
The front speed sensor rotor LH is free of oil and foreign matter.
OK |
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REPLACE FRONT SPEED SENSOR LH AND FRONT SPEED SENSOR ROTOR LH
for front speed sensor LH: Click here
for front speed sensor rotor LH: Click here
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NG
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3.
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CLEAN FRONT SPEED SENSOR ROTOR LH
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(a) Clean the front speed sensor rotor LH.
NOTICE:
Do not use parts cleaner when cleaning the front speed sensor rotor LH.
NEXT
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|
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(a) Clear the DTCs.
Chassis > Brake/EPB > Clear DTCs
(b) Turn the ignition switch to off.
NEXT
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5.
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PERFORM DEALER MODE (SIGNAL CHECK) INSPECTION (SPEED SENSOR CHECK)
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(a) Using the GTS, perform a Dealer Mode (Signal Check) inspection sensor check and check that speed sensor Dealer Mode (Signal Check) inspection items change from incomplete to complete.
Chassis > Brake/EPB > Utility
Tester Display
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Signal Check
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OK:
Speed sensor Dealer Mode (Signal Check) inspection items change from incomplete to complete.
HINT:
The front speed sensor rotor LH is incorporated into the front axle hub sub-assembly LH.
If the front speed sensor rotor LH needs to be replaced, replace it together with the front axle hub sub-assembly LH.
NG |
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REPLACE FRONT SPEED SENSOR LH AND FRONT SPEED SENSOR ROTOR LH
for front speed sensor LH: Click here
for front speed sensor rotor LH: Click here
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OK
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|
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(a) Based on the Freeze Frame Data and interview with the customer, attempt to reproduce the conditions when the malfunction occurred.
(b) Check if the same DTC is output.
Chassis > Brake/EPB > Trouble Codes
HINT:
The front speed sensor rotor LH is incorporated into the front axle hub sub-assembly LH.
If the front speed sensor rotor LH needs to be replaced, replace it together with the front axle hub sub-assembly LH.
Result
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Proceed to
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C05001F is not output
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A
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C05001F is output
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B
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A |
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END
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B |
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REPLACE FRONT SPEED SENSOR LH AND FRONT SPEED SENSOR ROTOR LH
for front speed sensor LH: Click here
for front speed sensor rotor LH: Click here
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7.
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CLEAN FRONT SPEED SENSOR LH
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(a) Clean the front speed sensor LH.
NOTICE:
When cleaning the front speed sensor LH, make sure to clean the installation hole before installation.
NEXT
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|
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(a) Clear the DTCs.
Chassis > Brake/EPB > Clear DTCs
(b) Turn the ignition switch to off.
NEXT
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|
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9.
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PERFORM DEALER MODE (SIGNAL CHECK) INSPECTION (SPEED SENSOR CHECK)
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(a) Using the GTS, perform a Dealer Mode (Signal Check) inspection sensor check and check that speed sensor Dealer Mode (Signal Check) inspection items change from incomplete to complete.
Chassis > Brake/EPB > Utility
Tester Display
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Signal Check
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OK:
Speed sensor Dealer Mode (Signal Check) inspection items change from incomplete to complete.
OK
|
|
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(a) Based on the Freeze Frame Data and interview with the customer, attempt to reproduce the conditions when the malfunction occurred.
Chassis > Brake/EPB > Trouble Codes
Result
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Proceed to
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C05001F is not output
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A
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C05001F is output
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B
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A |
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END
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