DTC C0506-14: Right Front Wheel Speed Sensor Circuit Short to Ground or Open [10/2022 - ]: Procedure

Pre-procedure1

• Select the line graph display on the GTS.

• Check for any momentary interruption in the wire harness and connector.

  Chassis > Brake/EPB > Data List 

  Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
  FR Speed Open	Front speed sensor RH open detection	Normal / Under intermittent	Normal: Normal Under intermittent: Momentary interruption	-
  FR Speed Sensor Voltage Open	Front speed sensor RH voltage open detection	Normal / Under intermittent	Normal: Normal Under intermittent: Momentary interruption	-

  Chassis > Brake/EPB > Data List 

  Tester Display
  FR Speed Open
  FR Speed Sensor Voltage Open

  OK

  Normal (There are no momentary interruptions.)

  NOTE:

  Perform the above inspection before removing the sensor and connector.

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None

Result: 

OK 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - ] 

Result: 

NG 

See step  2

1. Check the vehicle specification.

   Result

   Result	Proceed to
   w/o AVS	A
   w/ AVS	B

Result: 

B 

See step  5

Result: 

A 

See step  3

Pre-procedure1

• Turn the ignition switch off.

• Make sure that there is no looseness at the locking part and the connecting part of the connectors.

  OK

  The connector is securely connected.

Pre-procedure2

• Disconnect the A128 front speed sensor RH connector.
• Disconnect the A31 skid control ECU (brake actuator assembly) connector.

• Check both the connector case and the terminals for deformation and corrosion.

  OK

  No deformation or corrosion.

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

  Standard Resistance

  Tester Connection	Condition	Specified Condition	Result
  A128-5 (FR+) - A31-7 (FR+)	Always	Below 1 Ω	Ω
  A128-5 (FR+) or A31-7 (FR+) - Body ground	Always	10 kΩ or higher	kΩ
  A128-6 (FR-) - A31-6 (FR-)	Always	Below 1 Ω	Ω
  A128-6 (FR-) or A31-6 (FR-) - Body ground	Always	10 kΩ or higher	kΩ

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  4

Pre-procedure1

• Reconnect the A31 skid control ECU (brake actuator assembly) connector.

• Make sure that there is no looseness at the locking part and the connecting part of the connectors.

  OK

  The connector is securely connected.

Pre-procedure2

• Turn the ignition switch to ON.

• Measure the voltage according to the value(s) in the table below.

  Standard Voltage

  Tester Connection	Condition	Specified Condition	Result
  A128-5 (FR+) - Body ground	Ignition switch ON	11 to 14 V	V

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None

Result: 

OK 

REPLACE FRONT SPEED SENSOR RH 

w/o AVS: Refer to REMOVAL [10/2022 - 08/2023] , or refer to REMOVAL [08/2023 - ]

w/ AVS: Refer to REMOVAL [10/2022 - ]

Result: 

NG 

REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to  REMOVAL [10/2022 - ] 

1. Turn the ignition switch off.
2. Make sure that there is no looseness at the locking part and the connecting part of the connectors.

   OK

   The connector is securely connected.

3. Disconnect the i2 and Ai2 skid control sensor wire RH connector.
4. Check both the connector case and the terminals for deformation and corrosion.

   OK

   No deformation or corrosion.

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition	Result
   i2-3 (FR+) - Ai2-5 (FR+)	Always	Below 1 Ω	Ω
   i2-3 (FR+) or Ai2-5 (FR+) - Body ground and other terminals	Always	10 kΩ or higher	kΩ
   i2-1 (FR-) - Ai2-6 (FR-)	Always	Below 1 Ω	Ω
   i2-1 (FR-) or Ai2-6 (FR-) - Body ground and other terminals	Always	10 kΩ or higher	kΩ

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE SKID CONTROL SENSOR WIRE RH. Refer to  REMOVAL [10/2022 - ] 

Result: 

OK 

See step  6

1. Make sure that there is no looseness at the locking part and the connecting part of the connectors.

   OK

   The connector is securely connected.

2. Disconnect the A31 skid control ECU (brake actuator 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	Result
   Ai2-5 (FR+) - A31-7 (FR+)	Always	Below 1 Ω	Ω
   Ai2-5 (FR+) or A31-7 (FR+) - Body ground	Always	10 kΩ or higher	kΩ
   Ai2-6 (FR-) - A31-6 (FR-)	Always	Below 1 Ω	Ω
   Ai2-6 (FR-) or A31-6 (FR-) - Body ground	Always	10 kΩ or higher	kΩ

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  7

1. Reconnect the A31 skid control ECU (brake actuator assembly) connector.
2. Reconnect the Ai2 skid control sensor wire RH connector.
3. Make sure that there is no looseness at the locking part and the connecting part of the connectors.

   OK

   The connector is securely connected.

4. Turn the ignition switch to ON.
5. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition	Result
   i2-3 (FR+) - Body ground	Ignition switch ON	11 to 14 V	V

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE FRONT SPEED SENSOR RH. Refer to  REMOVAL [10/2022 - ] 

Result: 

NG 

REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to  REMOVAL [10/2022 - ]