When the system is starting up and the skid control ECU (brake actuator assembly) detects a speed sensor circuit malfunction via the speed sensor circuit self-diagnosis function, this DTC is stored.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | DTC Output from | Priority |
|---|---|---|---|---|---|
| C050049 | Left Front Wheel Speed Sensor Internal Electronic Failure | A circuit malfunction in the speed sensor is detected during the self test. | ·
Front speed sensor LH ·
Wire harness or connector ·
Skid control ECU (brake actuator assembly) |
Brake/EPB | A |
Procedure1
Make sure that there is no looseness at the locking part and the connecting part of the connectors.
The connector is securely connected.
Pre-procedure1
Disconnect the A42 front speed sensor LH connector.
Procedure2
Check both the connector case and the terminals for deformation and corrosion.
No deformation or corrosion.
Pre-procedure2
Turn the ignition switch to ON.
Procedure3
Measure the voltage according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
|
Click Location & Routing(A42)Location & Routingewd_type=routing;type=c;code=A42 Click Connector(A42)Engine Compartment>Engine Room Main Wire / Transmission Wire>Front Speed Sensor LHewd_type=component;type=c;code=A42;pinno=1,2 |
||
| A42-1 (FL+) - A42-2 (FL-) | Ignition switch ON | 11 to 14 V |
| Proceed to |
|---|
| OK |
| NG |
Post-procedure1
None
OK
NG
Procedure1
Make sure that there is no looseness at the locking part and the connecting part of the connectors.
The connector is securely connected.
Pre-procedure1
Disconnect the A42 front speed sensor LH connector.
Procedure2
Check both the connector case and the terminals for deformation and corrosion.
No deformation or corrosion.
Procedure3
Measure the voltage according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
|
Click Location & Routing(A42)Location & Routingewd_type=routing;type=c;code=A42 Click Connector(A42)Engine Compartment>Engine Room Main Wire / Transmission Wire>Front Speed Sensor LHewd_type=component;type=c;code=A42;pinno=1 |
||
| A42-1 (FL+) - Body ground | Ignition switch off | Below 1.5 V |
| Proceed to |
|---|
| OK |
| NG |
Post-procedure1
None
OK
NG
Procedure1
Make sure that there is no looseness at the locking part and the connecting part of the connectors.
The connector is securely connected.
Pre-procedure1
Disconnect the A40 skid control ECU (brake actuator assembly) connector.
Disconnect the A42 front speed sensor LH connector.
Procedure2
Check both the connector case and the terminals for deformation and corrosion.
No deformation or corrosion.
Procedure3
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
|
Click Location & Routing(A42,A40)Location & Routingewd_type=routing;type=c,c;code=A42,A40 Click Connector(A42)Engine Compartment>Engine Room Main Wire / Transmission Wire>Front Speed Sensor LHewd_type=component;type=c;code=A42;pinno=2 Click Connector(A40)Engine Compartment>Engine Room Main Wire / Transmission Wire>Brake Actuator Assemblyewd_type=component;type=c;code=A40;pinno=7 |
||
| A42-2 (FL-) or A40-7 (FL-) - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
Post-procedure1
None
OK
NG
Procedure1
Make sure that there is no looseness at the locking part and the connecting part of the connectors.
The connector is securely connected.
Pre-procedure1
Disconnect the A40 skid control ECU (brake actuator assembly) connector.
Disconnect the A42 front speed sensor LH connector.
Procedure2
Check both the connector case and the terminals for deformation and corrosion.
No deformation or corrosion.
Procedure3
Measure the voltage according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
|
Click Location & Routing(A42)Location & Routingewd_type=routing;type=c;code=A42 Click Connector(A42)Engine Compartment>Engine Room Main Wire / Transmission Wire>Front Speed Sensor LHewd_type=component;type=c;code=A42;pinno=1 |
||
| A42-1 (FL+) - Body ground | Always | Below 1.5 V |
| Proceed to |
|---|
| OK |
| NG |
Post-procedure1
None
OK
NG
Procedure1
Make sure that there is no looseness at the locking part and the connecting part of the connectors.
The connector is securely connected.
Pre-procedure1
Disconnect the A42 front speed sensor LH connector.
Procedure2
Check both the connector case and the terminals for deformation and corrosion.
No deformation or corrosion.
Pre-procedure2
Turn the ignition switch to ON.
Procedure3
Measure the voltage according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
|
Click Location & Routing(A42)Location & Routingewd_type=routing;type=c;code=A42 Click Connector(A42)Engine Compartment>Engine Room Main Wire / Transmission Wire>Front Speed Sensor LHewd_type=component;type=c;code=A42;pinno=1 |
||
| A42-1 (FL+) - Body ground | Ignition switch ON | 11 to 14 V |
| Proceed to |
|---|
| OK |
| NG |
Post-procedure1
None
OK
NG
Procedure1
Make sure that there is no looseness at the locking part and the connecting part of the connectors.
The connector is securely connected.
Pre-procedure1
Disconnect the A40 skid control ECU (brake actuator assembly) connector.
Disconnect the A42 front speed sensor LH connector.
Procedure2
Check both the connector case and the terminals for deformation and corrosion.
No deformation or corrosion.
Procedure3
Measure the voltage according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
|
Click Location & Routing(A42)Location & Routingewd_type=routing;type=c;code=A42 Click Connector(A42)Engine Compartment>Engine Room Main Wire / Transmission Wire>Front Speed Sensor LHewd_type=component;type=c;code=A42;pinno=2 |
||
| A42-2 (FL-) - Body ground | Always | Below 1.5 V |
| Proceed to |
|---|
| OK |
| NG |
Post-procedure1
None
OK
NG
Procedure1
Make sure that there is no looseness at the locking part and the connecting part of the connectors.
The connector is securely connected.
Pre-procedure1
Disconnect the A40 skid control ECU (brake actuator assembly) connector.
Disconnect the A42 front speed sensor LH connector.
Procedure2
Check both the connector case and the terminals for deformation and corrosion.
No deformation or corrosion.
Procedure3
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
|
Click Location & Routing(A42,A40)Location & Routingewd_type=routing;type=c,c;code=A42,A40 Click Connector(A42)Engine Compartment>Engine Room Main Wire / Transmission Wire>Front Speed Sensor LHewd_type=component;type=c;code=A42;pinno=2,1 Click Connector(A40)Engine Compartment>Engine Room Main Wire / Transmission Wire>Brake Actuator Assemblyewd_type=component;type=c;code=A40;pinno=7,24 |
||
| A42-2 (FL-) - A40-7 (FL-) | Always | Below 1 Ω |
| A42-1 (FL+) or A40-24 (FL+) - A42-2 (FL-) or A40-7 (FL-) | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
Post-procedure1
None
OK
NG
Procedure1
Make sure that there is no looseness at the locking part and the connecting part of the connectors.
The connector is securely connected.
Pre-procedure1
Disconnect the A40 skid control ECU (brake actuator assembly) connector.
Disconnect the A42 front speed sensor LH connector.
Procedure2
Check both the connector case and the terminals for deformation and corrosion.
No deformation or corrosion.
Procedure3
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
|
Click Location & Routing(A42,A40)Location & Routingewd_type=routing;type=c,c;code=A42,A40 Click Connector(A42)Engine Compartment>Engine Room Main Wire / Transmission Wire>Front Speed Sensor LHewd_type=component;type=c;code=A42;pinno=1 Click Connector(A40)Engine Compartment>Engine Room Main Wire / Transmission Wire>Brake Actuator Assemblyewd_type=component;type=c;code=A40;pinno=24 |
||
| A42-1 (FL+) - A40-24 (FL+) | Always | Below 1 Ω |
| A42-1 (FL+) or A40-24 (FL+) - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
Post-procedure1
None
OK
NG