DESCRIPTION
Refer to DTC C050C1F.
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DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
---|---|---|---|
C050C23 | Left Rear Wheel Speed Sensor Signal Stuck Low | Any of the following is detected:
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Vehicle Condition | ||||||
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Pattern 1 | Pattern 2 | Pattern 3 | Pattern 4 | Pattern 5 | ||
Diagnosis Condition | When the +BS terminal voltage is 17.4 V or less | ○ | ○ | ○ | ○ | ○ |
Malfunction Status | At a vehicle speed of 10 km/h (6 mph) or more, output voltage from one of the speed sensors is less than that from the other sensors*2 | ○ | - | - | - | - |
At a vehicle speed of 10 km/h (6 mph) or more, output voltage from one of the speed sensors is less than that from the other sensors*1 | - | ○ | - | - | - | |
At a vehicle speed less than 10 km/h (6 mph), output from one of the speed sensors is 0 km/h (0 mph) | - | - | ○ | - | - | |
At a vehicle speed of 10 km/h (6 mph) or more, outputs from both rear speed sensors are 0 km/h (0 mph)*2 | - | - | - | ○ | - | |
At a vehicle speed of 10 km/h (6 mph) or more, outputs from both rear speed sensors are 0 km/h (0 mph)*1 | - | - | - | ○ | ||
Detection Time | 15 seconds or more | 30 seconds or more | 1 second or more | 15 seconds or more | 30 seconds or more | |
Number of Trips | 1 trip | 1 trip | 1 trip | 1 trip | 1 trip |
HINT:
DTC will be output when conditions for any of the patterns in the table above are met.
WIRING DIAGRAM
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CAUTION / NOTICE / HINT
NOTICE:
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PROCEDURE
1. | CHECK VEHICLE SPECIFICATION |
(a) Check the vehicle specification.
Result | Proceed to |
---|---|
for AWD | A |
for 2WD | B |
B | GO TO STEP 11 |
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2. | CHECK REAR SPEED SENSOR LH INSTALLATION |
(a) Turn the engine switch off. |
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(b) Check the rear speed sensor LH installation.
OK:
There is no clearance between the rear speed sensor LH and rear axle carrier sub-assembly.
The installation bolt is tightened properly.
Torque
8.5 N*m (87 kgf*cm, 75 in.*lbf)
NG | REINSTALL OR REPLACE REAR SPEED SENSOR LH |
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3. | CHECK REAR SPEED SENSOR LH (CHECK FOR FOREIGN MATTER) |
(a) Remove the rear speed sensor LH.
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(b) Check the rear speed sensor LH tip.
OK:
The rear speed sensor LH tip is free of scratches, oil, and foreign matter.
NOTICE:
NG | CLEAN OR REPLACE REAR SPEED SENSOR LH |
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4. | READ VALUE USING TECHSTREAM (RL WHEEL SPEED) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Enter the following menus: Chassis / Brake/EPB / Data List.
Chassis > Brake/EPB > Data List Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
---|---|---|---|---|
RL Wheel Speed | Rear wheel speed sensor LH reading | Min.: 0.0 km/h (0.0 mph) Max.: 6553.5 km/h (4072 mph) | Vehicle stopped: 0.0 km/h (0.0 mph) | When driving at constant speed: No large fluctuations |
Tester Display |
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RL Wheel Speed |
(d) Start the engine.
(e) Perform a road test.
(f) Check the speed value output from the speed sensor displayed on the Techstream.
HINT:
Factors that affect the indicated vehicle speed include tire size, tire pressure, and tire wear. The speed indicated on the speedometer has an allowable margin of error. This can be tested using a speedometer tester (calibrated chassis dynamometer). For details about testing and the margin of error, see the reference chart.
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OK:
The speed value output from the speed sensor displayed on the Techstream is similar to the speed indicated on the speedometer.
OK | USE SIMULATION METHOD TO CHECK |
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5. | CHECK VEHICLE SPECIFICATION |
(a) Check the vehicle specification.
Result | Proceed to |
---|---|
w/o AVS | A |
w/ AVS | B |
B | GO TO STEP 8 |
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6. | CHECK HARNESS AND CONNECTOR (REAR SPEED SENSOR LH - BRAKE ACTUATOR ASSEMBLY) |
(a) Turn the engine switch off.
(b) Make sure that there is no looseness at the locking part and the connecting part of the connectors.
OK:
The connector is securely connected.
(c) Disconnect the A41 skid control ECU (brake actuator assembly) connector.
(d) Disconnect the T1 rear speed sensor LH connector.
(e) Check both the connector case and the terminals for deformation and corrosion.
OK:
No deformation or corrosion.
(f) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
T1-3 (RL+) - A41-5 (RL+) | Always | Below 1 Ω |
T1-3 (RL+) or A41-5 (RL+) - Body ground | Always | 10 kΩ or higher |
T1-1 (RL-) - A41-4 (RL-) | Always | Below 1 Ω |
T1-1 (RL-) or A41-4 (RL-) - Body ground | Always | 10 kΩ or higher |
NG | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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7. | CHECK REAR SPEED SENSOR ROTOR LH (CHECK FOR FOREIGN MATTER) |
(a) Remove the component with the rear speed sensor rotor LH.
Click here
(b) Check the rear speed sensor rotor LH.
OK:
The rear speed sensor rotor LH is free of scratches, oil, and foreign matter.
NOTICE:
HINT:
Result | Proceed to |
---|---|
OK | A |
NG (The rear speed sensor rotor LH is damaged.) | B |
NG (There is foreign matter on the rear speed sensor rotor LH.) | C |
A | REPLACE REAR SPEED SENSOR LH |
B | REPLACE REAR AXLE HUB AND BEARING ASSEMBLY LH |
C | CLEAN REAR SPEED SENSOR ROTOR LH |
8. | INSPECT REAR SKID CONTROL SENSOR WIRE LH NO. 2 |
(a) Turn the engine switch off. |
|
(b) Make sure that there is no looseness at the locking part and the connecting part of the connectors.
OK:
The connector is securely connected.
(c) Disconnect the z23 and T8 rear skid control sensor wire LH No. 2 connector.
(d) Check both the connector case and the terminals for deformation and corrosion.
OK:
No deformation or corrosion.
(e) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
z23-1 (RL+) - T8-3 (RL+) | Always | Below 1 Ω |
z23-1 (RL+) or T8-3 (RL+) - Body ground and other terminals | Always | 10 kΩ or higher |
z23-3 (RL-) - T8-1 (RL-) | Always | Below 1 Ω |
z23-3 (RL-) or T8-1 (RL-) - Body ground and other terminals | Always | 10 kΩ or higher |
NG | REPLACE REAR SKID CONTROL SENSOR WIRE LH NO. 2 |
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9. | INSPECT HARNESS AND CONNECTOR (REAR SKID CONTROL SENSOR WIRE LH NO. 2 - BRAKE ACTUATOR ASSEMBLY) |
(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors.
OK:
The connector is securely connected.
(b) Disconnect the A41 skid control ECU (brake actuator assembly) connector.
(c) Check both the connector case and the terminals for deformation and corrosion.
OK:
No deformation or corrosion.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
T8-3 (RL+) - A41-5 (RL+) | Always | Below 1 Ω |
T8-3 (RL+) or A41-5 (RL+) - Body ground | Always | 10 kΩ or higher |
T8-1 (RL-) - A41-4 (RL-) | Always | Below 1 Ω |
T8-1 (RL-) or A41-4 (RL-) - Body ground | Always | 10 kΩ or higher |
NG | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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10. | CHECK REAR SPEED SENSOR ROTOR LH (CHECK FOR FOREIGN MATTER) |
(a) Remove the component with the rear speed sensor rotor LH.
Click here
(b) Check the rear speed sensor rotor LH.
OK:
The rear speed sensor rotor LH is free of scratches, oil, and foreign matter.
NOTICE:
HINT:
Result | Proceed to |
---|---|
OK | A |
NG (The rear speed sensor rotor LH is damaged.) | B |
NG (There is foreign matter on the rear speed sensor rotor LH.) | C |
A | REPLACE REAR SPEED SENSOR LH |
B | REPLACE REAR AXLE HUB AND BEARING ASSEMBLY LH |
C | CLEAN REAR SPEED SENSOR ROTOR LH |
11. | CHECK REAR SPEED SENSOR LH INSTALLATION |
(a) Turn the engine switch off. |
|
(b) Check the rear speed sensor LH installation.
OK:
There is no clearance between the rear speed sensor LH and the rear axle hub and bearing assembly LH.
HINT:
The rear speed sensor rotor LH and rear speed sensor LH are incorporated into the rear axle hub and bearing assembly LH.
If the rear speed sensor rotor LH needs to be replaced, replace the rear axle hub and bearing assembly LH with rear speed sensor LH.
NG | REPLACE REAR AXLE HUB AND BEARING ASSEMBLY LH |
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12. | READ VALUE USING TECHSTREAM (RL WHEEL SPEED) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Enter the following menus: Chassis / Brake/EPB / Data List.
Chassis > Brake/EPB > Data List Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
---|---|---|---|---|
RL Wheel Speed | Rear wheel speed sensor LH reading | Min.: 0.0 km/h (0.0 mph) Max.: 6553.5 km/h (4072 mph) | Vehicle stopped: 0.0 km/h (0.0 mph) | When driving at constant speed: No large fluctuations |
Tester Display |
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RL Wheel Speed |
(d) Start the engine.
(e) Perform a road test.
(f) Check the speed value output from the speed sensor displayed on the Techstream.
HINT:
Factors that affect the indicated vehicle speed include tire size, tire pressure, and tire wear. The speed indicated on the speedometer has an allowable margin of error. This can be tested using a speedometer tester (calibrated chassis dynamometer). For details about testing and the margin of error, see the reference chart.
Click here
OK:
The speed value output from the speed sensor displayed on the Techstream is similar to the speed indicated on the speedometer.
OK | USE SIMULATION METHOD TO CHECK |
|
13. | CHECK VEHICLE SPECIFICATION |
(a) Check the vehicle specification.
Result | Proceed to |
---|---|
w/o AVS | A |
w/ AVS | B |
B | GO TO STEP 16 |
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14. | INSPECT REAR SKID CONTROL SENSOR WIRE LH NO. 1 |
(a) Turn the engine switch off. |
|
(b) Make sure that there is no looseness at the locking part and the connecting part of the connectors.
OK:
The connector is securely connected.
(c) Disconnect the j2 and Tj2 rear skid control sensor wire LH No. 1 connector.
(d) Check both the connector case and the terminals for deformation and corrosion.
OK:
No deformation or corrosion.
(e) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
j2-2 (RL+) - Tj2-3 (RL+) | Always | Below 1 Ω |
j2-2 (RL+) or Tj2-3 (RL+) - Body ground and other terminals | Always | 10 kΩ or higher |
j2-1 (RL-) - Tj2-1 (RL-) | Always | Below 1 Ω |
j2-1 (RL-) or Tj2-1 (RL-) - Body ground and other terminals | Always | 10 kΩ or higher |
NG | REPLACE REAR SKID CONTROL SENSOR WIRE LH NO. 1 |
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15. | CHECK HARNESS AND CONNECTOR (REAR SKID CONTROL SENSOR WIRE LH NO. 1 - BRAKE ACTUATOR ASSEMBLY) |
(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors.
OK:
The connector is securely connected.
(b) Disconnect the A41 skid control ECU (brake actuator assembly) connector.
(c) Check both the connector case and the terminals for deformation and corrosion.
OK:
No deformation or corrosion.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
Tj2-3 (RL+) - A41-5 (RL+) | Always | Below 1 Ω |
Tj2-3 (RL+) or A41-5 (RL+) - Body ground | Always | 10 kΩ or higher |
Tj2-1 (RL-) - A41-4 (RL-) | Always | Below 1 Ω |
Tj2-1 (RL-) or A41-4 (RL-) - Body ground | Always | 10 kΩ or higher |
HINT:
The rear speed sensor LH is incorporated into the rear axle hub and bearing assembly LH.
If the rear speed sensor LH needs to be replaced, replace the rear axle hub and bearing assembly LH.
OK | REPLACE REAR AXLE HUB AND BEARING ASSEMBLY LH |
NG | REPAIR OR REPLACE HARNESS OR CONNECTOR |
16. | INSPECT REAR SKID CONTROL SENSOR WIRE LH NO. 1 |
(a) Turn the engine switch off. |
|
(b) Make sure that there is no looseness at the locking part and the connecting part of the connectors.
OK:
The connector is securely connected.
(c) Disconnect the j2 and j6 rear skid control sensor wire LH No. 1 connector.
(d) Check both the connector case and the terminals for deformation and corrosion.
OK:
No deformation or corrosion.
(e) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
j2-2 (RL+) - j6-1 (RL+) | Always | Below 1 Ω |
j2-2 (RL+) or j6-1 (RL+) - Body ground and other terminals | Always | 10 kΩ or higher |
j2-1 (RL-) - j6-3 (RL-) | Always | Below 1 Ω |
j2-1 (RL-) or j6-3 (RL-) - Body ground and other terminals | Always | 10 kΩ or higher |
NG | REPLACE REAR SKID CONTROL SENSOR WIRE LH NO. 1 |
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17. | INSPECT REAR SKID CONTROL SENSOR WIRE LH NO. 2 |
(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors. OK: The connector is securely connected. |
|
(b) Disconnect the T8 rear skid control sensor wire LH No. 2 connector.
(c) Check both the connector case and the terminals for deformation and corrosion.
OK:
No deformation or corrosion.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
j6-1 (RL+) - T8-3 (RL+) | Always | Below 1 Ω |
j6-1 (RL+) or T8-3 (RL+) - Body ground and other terminals | Always | 10 kΩ or higher |
j6-3 (RL-) - T8-1 (RL-) | Always | Below 1 Ω |
j6-3 (RL-) or T8-1 (RL-) - Body ground and other terminals | Always | 10 kΩ or higher |
NG | REPLACE REAR SKID CONTROL SENSOR WIRE LH NO. 2 |
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18. | CHECK HARNESS AND CONNECTOR (REAR SKID CONTROL SENSOR WIRE LH NO. 2 - BRAKE ACTUATOR ASSEMBLY) |
(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors.
OK:
The connector is securely connected.
(b) Disconnect the A41 skid control ECU (brake actuator assembly) connector.
(c) Check both the connector case and the terminals for deformation and corrosion.
OK:
No deformation or corrosion.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
T8-3 (RL+) - A41-5 (RL+) | Always | Below 1 Ω |
T8-3 (RL+) or A41-5 (RL+) - Body ground | Always | 10 kΩ or higher |
T8-1 (RL-) - A41-4 (RL-) | Always | Below 1 Ω |
T8-1 (RL-) or A41-4 (RL-) - Body ground | Always | 10 kΩ or higher |
HINT:
The rear speed sensor LH is incorporated into the rear axle hub and bearing assembly LH.
If the rear speed sensor LH needs to be replaced, replace the rear axle hub and bearing assembly LH.
OK | REPLACE REAR AXLE HUB AND BEARING ASSEMBLY LH |
NG | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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