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 |
|---|---|---|---|
| C050C49 | Left Rear Wheel Speed Sensor Internal Electronic Failure | A circuit malfunction in the speed sensor is detected during the self test. | ·
Rear speed sensor LH (rear axle hub and bearing assembly LH)*1 ·
Rear speed sensor LH*2 ·
Wire harness or connector ·
Skid control sensor wire LH (No. 2 parking brake wire assembly) ·
Skid control ECU (brake actuator assembly) |
| C051249 | Right Rear Wheel Speed Sensor Internal Electronic Failure | A circuit malfunction in the speed sensor is detected during the self test. | ·
Rear speed sensor RH (rear axle hub and bearing assembly RH)*1 ·
Rear speed sensor RH*2 ·
Wire harness or connector ·
Skid control sensor wire RH (No. 1 parking brake wire assembly) ·
Skid control ECU (brake actuator assembly) |
*1: for 2WD
*2: for AWD
After replacing the skid control ECU (brake actuator assembly), perform acceleration sensor zero point calibration and store system information memorization.
After replacing or removing and installing a speed sensor, perform Dealer Mode (Signal Check) inspection to confirm that the speed sensors are operating correctly.
Check the vehicle specification.
| Result | Proceed to |
|---|---|
| for 2WD | A |
| for AWD | B |
A
B
| *A | for LH |
| *B | for RH |
| *a | Front view of skid control sensor wire (parking brake wire assembly)
(to Rear Speed Sensor (Rear Axle Hub and Bearing Assembly)) |
Make sure that there is no looseness at the locking part and the connecting part of the connectors.
The connector is securely connected.
Disconnect the M50 or N58 rear speed sensor (rear axle hub and bearing assembly) connector.
Check both the connector case and the terminals for deformation and corrosion.
No deformation or corrosion.
Turn the ignition switch to ON.
Measure the voltage according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| N58-2 (RL+) - N58-1 (RL-) | Ignition switch ON | 11 to 14 V |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| M50-2 (RR+) - M50-1 (RR-) | Ignition switch ON | 11 to 14 V |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *A | for LH |
| *B | for RH |
| *a | Front view of skid control sensor wire (parking brake wire assembly)
(to Rear Speed Sensor (Rear Axle Hub and Bearing Assembly)) |
Make sure that there is no looseness at the locking part and the connecting part of the connectors.
The connector is securely connected.
Disconnect the M50 or N58 rear speed sensor (rear axle hub and bearing assembly) connector.
Check both the connector case and the terminals for deformation and corrosion.
No deformation or corrosion.
Measure the voltage according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| N58-2 (RL+) - Body ground | Ignition switch off | Below 1.5 V |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| M50-2 (RR+) - Body ground | Ignition switch off | Below 1.5 V |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *A | for LH |
| *B | for RH |
| *1 | Front view of skid control sensor wire (parking brake wire assembly) |
| *a | Front view of wire harness connector
(to Sensor Side Connector) |
| *b | Front view of wire harness connector
(to Vehicle Side Connector) |
Make sure that there is no looseness at the locking part and the connecting part of the connectors.
The connector is securely connected.
Disconnect the M50 or N58 rear speed sensor (rear axle hub and bearing assembly) connector.
Disconnect the MM3 or NN6 skid control sensor wire (parking brake wire assembly) connector.
Check both the connector case and the terminals for deformation and corrosion.
No deformation or corrosion.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| N58-1 (RL-) or NN6-4 - Body ground and other terminals | Always | 10 kΩ or higher |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| M50-1 (RR-) or MM3-4 - Body ground and other terminals | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Make sure that there is no looseness at the locking part and the connecting part of the connectors.
The connector is securely connected.
Disconnect the A39 skid control ECU (brake actuator assembly) connector.
Disconnect the MM3 or NN6 skid control sensor wire (parking brake wire assembly) connector.
Check both the connector case and the terminals for deformation and corrosion.
No deformation or corrosion.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| NN6-4 or A39-23 (RL-) - Body ground | Always | 10 kΩ or higher |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| MM3-4 or A39-37 (RR-) - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *A | for LH |
| *B | for RH |
| *a | Front view of wire harness connector
(to Skid Control Sensor Wire (Parking Brake Wire Assembly)) |
Make sure that there is no looseness at the locking part and the connecting part of the connectors.
The connector is securely connected.
Disconnect the MM3 or NN6 skid control sensor wire (parking brake wire assembly) connector.
Check both the connector case and the terminals for deformation and corrosion.
No deformation or corrosion.
Measure the voltage according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| NN6-3 - Body ground | Ignition switch off | Below 1.5 V |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| MM3-3 - Body ground | Ignition switch off | Below 1.5 V |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *A | for LH |
| *B | for RH |
| *a | Front view of wire harness connector
(to Skid Control Sensor Wire (Parking Brake Wire Assembly)) |
Make sure that there is no looseness at the locking part and the connecting part of the connectors.
The connector is securely connected.
Disconnect the A39 skid control ECU (brake actuator assembly) connector.
Disconnect the MM3 or NN6 skid control sensor wire (parking brake wire assembly) connector.
Check both the connector case and the terminals for deformation and corrosion.
No deformation or corrosion.
Measure the voltage according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| NN6-3 - Body ground | Always | Below 1.5 V |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| MM3-3 - Body ground | Always | Below 1.5 V |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *A | for LH |
| *B | for RH |
| *a | Front view of wire harness connector
(to Skid Control Sensor Wire (Parking Brake Wire Assembly)) |
Make sure that there is no looseness at the locking part and the connecting part of the connectors.
The connector is securely connected.
Disconnect the MM3 or NN6 skid control sensor wire (parking brake wire assembly) connector.
Check both the connector case and the terminals for deformation and corrosion.
No deformation or corrosion.
Turn the ignition switch to ON.
Measure the voltage according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| NN6-3 - NN6-4 | Ignition switch ON | 11 to 14 V |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| MM3-3 - MM3-4 | Ignition switch ON | 11 to 14 V |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *A | for LH |
| *B | for RH |
| *a | Front view of wire harness connector
(to Skid Control Sensor Wire (Parking Brake Wire Assembly)) |
Make sure that there is no looseness at the locking part and the connecting part of the connectors.
The connector is securely connected.
Disconnect the MM3 or NN6 skid control sensor wire (parking brake wire assembly) connector.
Check both the connector case and the terminals for deformation and corrosion.
No deformation or corrosion.
Turn the ignition switch to ON.
Measure the voltage according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| NN6-3 - Body ground | Ignition switch ON | 11 to 14 V |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| MM3-3 - Body ground | Ignition switch ON | 11 to 14 V |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *A | for LH |
| *B | for RH |
| *a | Front view of wire harness connector
(to Skid Control Sensor Wire (Parking Brake Wire Assembly)) |
Make sure that there is no looseness at the locking part and the connecting part of the connectors.
The connector is securely connected.
Disconnect the A39 skid control ECU (brake actuator assembly) connector.
Disconnect the MM3 or NN6 skid control sensor wire (parking brake wire assembly) connector.
Check both the connector case and the terminals for deformation and corrosion.
No deformation or corrosion.
Measure the voltage according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| NN6-4 - Body ground | Always | Below 1.5 V |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| MM3-4 - Body ground | Always | Below 1.5 V |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Make sure that there is no looseness at the locking part and the connecting part of the connectors.
The connector is securely connected.
Disconnect the A39 skid control ECU (brake actuator assembly) connector.
Disconnect the MM3 or NN6 skid control sensor wire (parking brake wire assembly) connector.
Check both the connector case and the terminals for deformation and corrosion.
No deformation or corrosion.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| NN6-4 - A39-23 (RL-) | Always | Below 1 Ω |
| NN6-3 or A39-39 (RL+) - NN6-4 or A39-23 (RL-) | Always | 10 kΩ or higher |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| MM3-4 - A39-37 (RR-) | Always | Below 1 Ω |
| MM3-3 or A39-22 (RR+) - MM3-4 or A39-37 (RR-) | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Make sure that there is no looseness at the locking part and the connecting part of the connectors.
The connector is securely connected.
Disconnect the A39 skid control ECU (brake actuator assembly) connector.
Disconnect the MM3 or NN6 skid control sensor wire (parking brake wire assembly) connector.
Check both the connector case and the terminals for deformation and corrosion.
No deformation or corrosion.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| NN6-3 - A39-39 (RL+) | Always | Below 1 Ω |
| NN6-3 or A39-39 (RL+) - Body ground | Always | 10 kΩ or higher |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| MM3-3 - A39-22 (RR+) | Always | Below 1 Ω |
| MM3-3 or A39-22 (RR+) - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *A | for LH |
| *B | for RH |
| *a | Front view of skid control sensor wire (parking brake wire assembly)
(to Rear Speed Sensor) |
Make sure that there is no looseness at the locking part and the connecting part of the connectors.
The connector is securely connected.
Disconnect the M50 or N58 rear speed sensor connector.
Check both the connector case and the terminals for deformation and corrosion.
No deformation or corrosion.
Turn the ignition switch to ON.
Measure the voltage according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| N58-2 (RL+) - N58-1 (RL-) | Ignition switch ON | 11 to 14 V |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| M50-2 (RR+) - M50-1 (RR-) | Ignition switch ON | 11 to 14 V |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *A | for LH |
| *B | for RH |
| *a | Front view of skid control sensor wire (parking brake wire assembly)
(to Rear Speed Sensor) |
Make sure that there is no looseness at the locking part and the connecting part of the connectors.
The connector is securely connected.
Disconnect the M50 or N58 rear speed sensor connector.
Check both the connector case and the terminals for deformation and corrosion.
No deformation or corrosion.
Measure the voltage according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| N58-2 (RL+) - Body ground | Ignition switch off | Below 1.5 V |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| M50-2 (RR+) - Body ground | Ignition switch off | Below 1.5 V |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *A | for LH |
| *B | for RH |
| *1 | Front view of skid control sensor wire (parking brake wire assembly) |
| *a | Front view of wire harness connector
(to Sensor Side Connector) |
| *b | Front view of wire harness connector
(to Vehicle Side Connector) |
Make sure that there is no looseness at the locking part and the connecting part of the connectors.
The connector is securely connected.
Disconnect the M50 or N58 rear speed sensor connector.
Disconnect the MM3 or NN6 skid control sensor wire (parking brake wire assembly) connector.
Check both the connector case and the terminals for deformation and corrosion.
No deformation or corrosion.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| N58-1 (RL-) or NN6-4 - Body ground and other terminals | Always | 10 kΩ or higher |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| M50-1 (RR-) or MM3-4 - Body ground and other terminals | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Make sure that there is no looseness at the locking part and the connecting part of the connectors.
The connector is securely connected.
Disconnect the A39 skid control ECU (brake actuator assembly) connector.
Disconnect the MM3 or NN6 skid control sensor wire (parking brake wire assembly) connector.
Check both the connector case and the terminals for deformation and corrosion.
No deformation or corrosion.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| NN6-4 or A39-23 (RL-) - Body ground | Always | 10 kΩ or higher |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| MM3-4 or A39-37 (RR-) - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG