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

1. Select the line graph display on the GTS.
2. Check for any momentary interruption in the wire harness and connector.

   Refer to DATA LIST / ACTIVE TEST [12/2019 - 11/2023]

   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

Result: 

OK 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - ] 

Result: 

NG 

See step  2

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 A40 front speed sensor RH connector.
4. Disconnect the A57 No. 2 skid control ECU (brake actuator assembly) connector.
5. Check both the connector case and the terminals for deformation and corrosion.

   OK

   No deformation or corrosion.

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A40-1 (FR+) - A57-7 (FR+)	Always	Below 1 Ω
   A40-1 (FR+) or A57-7 (FR+) - Body ground	Always	10 kΩ or higher
   A40-2 (FR-) - A57-6 (FR-)	Always	Below 1 Ω
   A40-2 (FR-) or A57-6 (FR-) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  3

1. Reconnect the A57 No. 2 skid control ECU (brake actuator assembly) connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Front Speed Sensor RH)

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   A40-1 (FR+) - Body ground	Ignition switch ON	11 to 14 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 - 11/2023]