DTC C0506-12: Right Front Wheel Speed Sensor Circuit Short to Battery [11/2021 - ]: Procedure
WARNING: This page is about a different car, the 2025 Lexus NX 350h, 2024 Lexus NX 350h, 2023 Lexus NX 350h, and 2022 Lexus NX 350h. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK HARNESS AND CONNECTOR (SENSOR GROUND CIRCUIT)
- Make sure that there is no looseness at the locking part and the connecting part of the connectors.
OK
The connector is securely connected.
- Disconnect the A108 front speed sensor RH connector.
- Check both the connector case and the terminals for deformation and corrosion.
OK
No deformation or corrosion.
- 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 A108-5 (FR+) - A108-6 (FR-) Ignition switch ON 11 to 14 V Result
Proceed to OK NG
Result:
OK
REPLACE FRONT SPEED SENSOR RH. Refer to REMOVAL [11/2021 - 03/2024] , or refer to REMOVAL [03/2024 - ]
Result:
NG
See step 2
- Make sure that there is no looseness at the locking part and the connecting part of the connectors.
- CHECK HARNESS AND CONNECTOR (SENSOR GROUND CIRCUIT)
- 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.
- Disconnect the A38 No. 2 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 voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Condition Specified Condition A108-6 (FR-) - Body ground Always Below 1.5 V Result
Proceed to OK NG
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
Result:
OK
See step 3
- CHECK HARNESS AND CONNECTOR (FRONT SPEED SENSOR RH - BRAKE ACTUATOR ASSEMBLY)
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition A108-5 (FR+) or A38-7 (FR+) - A108-6 (FR-) or A38-6 (FR-) Always 10 kΩ or higher Result
Proceed to OK NG
Result:
OK
REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to REMOVAL [11/2021 - ]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
- Measure the resistance according to the value(s) in the table below.