LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2020 >> Avalon Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 114 (Electronically Controlled Brake System - Diagnostic Codes (C1415-U0073) & Symptom Tests (Hybrid)) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HV Model) >> DTC C1415: Rear Speed Sensor RH Circuit Output; DTC C1416: Rear Speed Sensor LH Circuit Output [04/2018 - ] >> Procedure

DTC C1415: Rear Speed Sensor RH Circuit Output; DTC C1416: Rear Speed Sensor LH Circuit Output [04/2018 - ]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK DTC 
    1. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [04/2018 - ]

      Chassis > ABS/VSC/TRAC > Clear DTCs 

    2. Turn the power switch off.
    3. Turn the power switch on (IG).
    4. Check if the same DTC is output.

      Refer to DTC CHECK / CLEAR [04/2018 - ]

      Chassis > ABS/VSC/TRAC > Trouble Codes 

      Result

      Result Proceed to
      DTC C1415 is output. A
      DTC C1416 is output. B

    Result: 

    B 

    See step  9

    Result: 

    A 

    See step  2

  2. READ VALUE USING TECHSTREAM (MOMENTARY INTERRUPTION) 
    1. Using the Techstream, check for any momentary interruptions in the wire harness and connector corresponding to a DTC.

      Refer to CHECK FOR INTERMITTENT PROBLEMS [04/2018 - ]

      Chassis > ABS/VSC/TRAC > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      RR Speed Sensor Voltage Open Rear speed sensor RH voltage open detection Error or Normal Error: Momentary interruption
      Normal: Normal      		 -

      Chassis > ABS/VSC/TRAC > Data List 

      Tester Display
      RR Speed Sensor Voltage Open
    2. Check for any momentary interruptions in the wire harness and connectors.

      OK

      There are no momentary interruptions.

      NOTE:

      Perform the above inspection before removing the sensor and connector.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  5

    Result: 

    OK 

    See step  3

  3. READ VALUE USING TECHSTREAM (REAR SPEED SENSOR RH) 
    1. Select the Data List on the Techstream.

      Refer to DATA LIST / ACTIVE TEST [04/2018 - ]

      Chassis > ABS/VSC/TRAC > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      RR Wheel Speed Rear speed sensor RH Min.: 0 km/h (0 mph), Max.: 326.4 km/h (203 mph) Vehicle stopped: 0 km/h (0 mph) When driving at constant speed: No large fluctuations

      Chassis > ABS/VSC/TRAC > Data List 

      Tester Display
      RR Wheel Speed
    2. Check the rear speed sensor RH output value.

      OK

      The output value changes in accordance with the vehicle speed.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  5

    Result: 

    OK 

    See step  4

  4. RECONFIRM DTC 
    1. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [04/2018 - ]

      Chassis > ABS/VSC/TRAC > Clear DTCs 

    2. Turn the power switch off.
    3. Turn the power switch on (READY).
    4. Perform a road test.
    5. Check if the same DTC is output.

      Refer to DTC CHECK / CLEAR [04/2018 - ]

      Chassis > ABS/VSC/TRAC > Trouble Codes 

      Result

      Result Proceed to
      DTC C1415 is not output. A
      DTC C1415 is output. B

    Result: 

    A 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [04/2018 - ] 

    Result: 

    B 

    REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY. Refer to  REMOVAL [04/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - ] 

  5. CHECK REAR SPEED SENSOR RH INSTALLATION 
    1. Turn the power switch off.
      GTY423344Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Rear Speed Sensor RH
      *a OK
      *b NG
      *c No Clearance
    2. Check the rear speed sensor RH installation.

      OK

      There is no clearance between the sensor and the rear axle hub.

      HINT: 

      Because the rear axle hub and bearing assembly RH cannot be disassembled, if the rear speed sensor RH needs replacement, replace the rear axle hub and bearing assembly RH.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE REAR AXLE HUB AND BEARING ASSEMBLY RH. Refer to  REMOVAL [04/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - ] 

    Result: 

    OK 

    See step  6

  6. INSPECT NO. 1 PARKING BRAKE WIRE ASSEMBLY 
    1. Make sure that there is no looseness at the locking part and the connecting part of the connectors.
      GTY866191Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of skid control sensor wire RH (No. 1 parking brake wire assembly)
      *b Front view of wire harness connector
      (to Sensor Side Connector)
      *c Front view of wire harness connector
      (to Vehicle Side Connector)

      OK

      The connector is securely connected.

    2. Disconnect the Y5 and YK5 skid control sensor wire RH (No. 1 parking brake wire assembly) connectors.
    3. Check both the connector case and the terminals for deformation and corrosion.

      OK

      No deformation or corrosion.

    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      Y5-2 (RA+) - YK5-1 (RR+) Always Below 1 Ω
      Y5-2 (RA+) or YK5-1 (RR+) - Body ground and other terminals Always 10 kΩ or higher
      Y5-1 (RA-) - YK5-2 (RR-) Always Below 1 Ω
      Y5-1 (RA-) or YK5-2 (RR-) - Body ground and other terminals Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE NO. 1 PARKING BRAKE WIRE ASSEMBLY 

    Result: 

    OK 

    See step  7

  7. CHECK HARNESS AND CONNECTOR (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY - NO. 1 PARKING BRAKE WIRE ASSEMBLY) 
    1. Make sure that there is no looseness at the locking part and the connecting part of the connector.

      OK

      The connector is securely connected.

    2. Disconnect the A35 skid control ECU (brake booster with master cylinder assembly) connector.
    3. Check both the connector case and the terminals for deformation and corrosion.

      OK

      No deformation or corrosion.

    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A35-7 (RR+) - YK5-1 (RR+) Always Below 1 Ω
      A35-7 (RR+) or YK5-1 (RR+) - Body ground Always 10 kΩ or higher
      A35-8 (RR-) - YK5-2 (RR-) Always Below 1 Ω
      A35-8 (RR-) or YK5-2 (RR-) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  8

  8. INSPECT BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY (SENSOR OUTPUT) 
    1. Reconnect the A35 skid control ECU (brake booster with master cylinder assembly) connector.
      GTY916833Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Skid Control Sensor Wire RH (No. 1 Parking Brake Wire Assembly))
    2. Turn the power switch on (IG).
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      YK5-1 (RR+) - Body ground Power switch on (IG) 8 to 14 V
      NOTE:

      Check the rear speed sensor RH signal after replacement.

      Refer to TEST MODE PROCEDURE [04/2018 - 08/2021] , or refer to TEST MODE PROCEDURE [08/2021 - ]

      HINT: 

      The rear speed sensor RH and rear speed sensor rotor RH are incorporated into the rear axle hub and bearing assembly RH.

      If the rear speed sensor RH and rear speed sensor rotor RH need to be replaced, replace the rear axle hub and bearing assembly RH.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE REAR AXLE HUB AND BEARING ASSEMBLY RH. Refer to  REMOVAL [04/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - ] 

    Result: 

    NG 

    REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY. Refer to  REMOVAL [04/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - ] 

  9. READ VALUE USING TECHSTREAM (MOMENTARY INTERRUPTION) 
    1. Using the Techstream, check for any momentary interruptions in the wire harness and connector corresponding to a DTC.

      Refer to CHECK FOR INTERMITTENT PROBLEMS [04/2018 - ]

      Chassis > ABS/VSC/TRAC > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      RL Speed Sensor Voltage Open Rear speed sensor LH voltage open detection Error or Normal Error: Momentary interruption
      Normal: Normal      		 -

      Chassis > ABS/VSC/TRAC > Data List 

      Tester Display
      RL Speed Sensor Voltage Open
    2. Check for any momentary interruptions in the wire harness and connectors.

      OK

      There are no momentary interruptions.

      NOTE:

      Perform the above inspection before removing the sensor and connector.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  12

    Result: 

    OK 

    See step  10

  10. READ VALUE USING TECHSTREAM (REAR SPEED SENSOR LH) 
    1. Select the Data List on the Techstream.

      Refer to DATA LIST / ACTIVE TEST [04/2018 - ]

      Chassis > ABS/VSC/TRAC > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      RL Wheel Speed Rear speed sensor LH Min.: 0 km/h (0 mph), Max.: 326.4 km/h (203 mph) Vehicle stopped: 0 km/h (0 mph) When driving at constant speed: No large fluctuations

      Chassis > ABS/VSC/TRAC > Data List 

      Tester Display
      RL Wheel Speed
    2. Check the rear speed sensor LH output value.

      OK

      The output value changes in accordance with the vehicle speed.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  12

    Result: 

    OK 

    See step  11

  11. RECONFIRM DTC 
    1. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [04/2018 - ]

      Chassis > ABS/VSC/TRAC > Clear DTCs 

    2. Turn the power switch off.
    3. Turn the power switch on (READY).
    4. Perform a road test.
    5. Check if the same DTC is output.

      Refer to DTC CHECK / CLEAR [04/2018 - ]

      Chassis > ABS/VSC/TRAC > Trouble Codes 

      Result

      Result Proceed to
      DTC C1416 is not output. A
      DTC C1416 is output. B

    Result: 

    A 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [04/2018 - ] 

    Result: 

    B 

    REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY. Refer to  REMOVAL [04/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - ] 

  12. CHECK REAR SPEED SENSOR LH INSTALLATION 
    1. Turn the power switch off.
      GTY423344Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Rear Speed Sensor LH
      *a OK
      *b NG
      *c No Clearance
    2. Check the rear speed sensor LH installation.

      OK

      There is no clearance between the sensor and the rear axle hub.

      HINT: 

      Because the rear axle hub and bearing assembly LH cannot be disassembled, if the rear speed sensor LH needs replacement, replace the rear axle hub and bearing assembly LH.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE REAR AXLE HUB AND BEARING ASSEMBLY LH. Refer to  REMOVAL [04/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - ] 

    Result: 

    OK 

    See step  13

  13. INSPECT NO. 2 PARKING BRAKE WIRE ASSEMBLY 
    1. Make sure that there is no looseness at the locking part and the connecting part of the connectors.
      GTY866193Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of skid control sensor wire LH (No. 2 parking brake wire assembly)
      *b Front view of wire harness connector
      (to Sensor Side Connector)
      *c Front view of wire harness connector
      (to Vehicle Side Connector)

      OK

      The connector is securely connected.

    2. Disconnect the Y2 and YK6 skid control sensor wire LH (No. 2 parking brake wire assembly) connectors.
    3. Check both the connector case and the terminals for deformation and corrosion.

      OK

      No deformation or corrosion.

    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      Y2-2 (LA+) - YK6-1 (RL+) Always Below 1 Ω
      Y2-2 (LA+) or YK6-1 (RL+) - Body ground and other terminals Always 10 kΩ or higher
      Y2-1 (LA-) - YK6-2 (RL-) Always Below 1 Ω
      Y2-1 (LA-) or YK6-2 (RL-) - Body ground and other terminals Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE NO. 2 PARKING BRAKE WIRE ASSEMBLY 

    Result: 

    OK 

    See step  14

  14. CHECK HARNESS AND CONNECTOR (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY - NO. 2 PARKING BRAKE WIRE ASSEMBLY) 
    1. Make sure that there is no looseness at the locking part and the connecting part of the connector.

      OK

      The connector is securely connected.

    2. Disconnect the A35 skid control ECU (brake booster with master cylinder assembly) connector.
    3. Check both the connector case and the terminals for deformation and corrosion.

      OK

      No deformation or corrosion.

    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A35-34 (RL+) - YK6-1 (RL+) Always Below 1 Ω
      A35-34 (RL+) or YK6-1 (RL+) - Body ground Always 10 kΩ or higher
      A35-35 (RL-) - YK6-2 (RL-) Always Below 1 Ω
      A35-35 (RL-) or YK6-2 (RL-) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  15

  15. INSPECT BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY (SENSOR OUTPUT) 
    1. Reconnect the A35 skid control ECU (brake booster with master cylinder assembly) connector.
      GTY943526Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Skid Control Sensor Wire LH (No. 2 Parking Brake Wire Assembly))
    2. Turn the power switch on (IG).
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      YK6-1 (RL+) - Body ground Power switch on (IG) 8 to 14 V
      NOTE:

      Check the rear speed sensor LH signal after replacement.

      Refer to TEST MODE PROCEDURE [04/2018 - 08/2021] , or refer to TEST MODE PROCEDURE [08/2021 - ]

      HINT: 

      The rear speed sensor LH and rear speed sensor rotor LH are incorporated into the rear axle hub and bearing assembly LH.

      If the rear speed sensor LH and rear speed sensor rotor LH need to be replaced, replace the rear axle hub and bearing assembly LH.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE REAR AXLE HUB AND BEARING ASSEMBLY LH. Refer to  REMOVAL [04/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - ] 

    Result: 

    NG 

    REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY. Refer to  REMOVAL [04/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - ] 

scientia non olet · About LEMON Manuals