DESCRIPTION
Refer to DTC C051212
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DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
|---|---|---|---|
|
C05121C | Right Rear Wheel Speed Sensor Circuit Voltage Out of Range |
|
|
*1: When more than 1 wheel has a wheel speed of less than 5 km/h (3 mph), a difference of 15% is permitted.
*2: When more than 1 wheel has a wheel speed of less than 5 km/h (3 mph), a difference of 16 km/h (10 mph) is permitted.
DTC Detection Conditions: C05121C|
Vehicle Condition | |||||||
|---|---|---|---|---|---|---|---|
|
Pattern 1 | Pattern 2 |
Pattern 3 | Pattern 4 |
Pattern 5 | Pattern 6 | ||
|
Diagnosis Condition | The vehicle is being driven in a straight line at a speed of 20 km/h (12 mph) or more and VSC/TRAC has permission to control vehicle braking. |
○ | ○ |
○ | - |
- | - |
|
The vehicle speed is less than 100 km/h (62 mph). |
- | - |
- | ○ |
○ | ○ | |
|
Malfunction Status | When the difference between the highest wheel speed and the lowest wheel speed is 6% or more*1 and the difference between the highest wheel speed and the second highest wheel speed is 5 km/h (3 mph) or more, the wheel speed is high compared to other speed sensors. |
○ | - |
- | - |
- | - |
|
When the difference between the highest wheel speed and the lowest wheel speed is 6% or more*1 and the value of the wheel speed is continuously the slowest. |
- | ○ |
- | - |
- | - | |
|
When the difference between the highest wheel speed and the lowest wheel speed is 6% or more*1 and the wheel speed is less than 5 km/h (3 mph). |
- | - |
○ | - |
- | - | |
|
When the difference between the highest wheel speed and the lowest wheel speed is 6 km/h (4 mph) or more*2 and the difference between the highest wheel speed and the second highest wheel speed is 5 km/h (3 mph) or more, the wheel speed is high compared to other speed sensors. |
- | - |
- | ○ |
- | - | |
|
When the difference between the highest wheel speed and the lowest wheel speed is 6 km/h (4 mph) or more*2 and the value of the wheel speed is continuously the slowest. |
- | - |
- | - |
○ | - | |
|
When the difference between the highest wheel speed and the lowest wheel speed is 6 km/h (4 mph) or more*2 and the wheel speed is less than 5 km/h (3 mph). |
- | - |
- | - |
- | ○ | |
|
Detection Time | Between 9 and 72 seconds or more (period changes depending on vehicle conditions). |
Between 9 and 72 seconds or more (period changes depending on vehicle conditions). |
Between 9 and 72 seconds or more (period changes depending on vehicle conditions). |
Between 9 and 72 seconds or more (period changes depending on vehicle conditions). |
Between 9 and 72 seconds or more (period changes depending on vehicle conditions). |
Between 9 and 72 seconds or more (period changes depending on vehicle conditions). | |
|
Number of Trips | 1 trip |
1 trip | 1 trip |
1 trip | 1 trip |
1 trip | |
*1: When more than 1 wheel has a wheel speed of less than 5 km/h (3 mph), a difference of 15% is permitted.
*2: When more than 1 wheel has a wheel speed of less than 5 km/h (3 mph), a difference of 16 km/h (10 mph) is permitted.
HINT:
DTC will be output when conditions for either of the patterns in the table above are met.
DTC Detection Conditions: C05121C|
Vehicle Condition | ||||
|---|---|---|---|---|
|
Pattern 7 | Pattern 8 |
Pattern 9 | ||
| Diagnosis Condition |
The vehicle speed is 100 km/h (62 mph) or more. |
○ | ○ |
○ |
|
Malfunction Status | When the difference between the highest wheel speed and the lowest wheel speed is 6% or more*1 and the difference between the highest wheel speed and the second highest wheel speed is 5 km/h (3 mph) or more, the wheel speed is high compared to other speed sensors. |
○ | - |
- |
| When the difference between the highest wheel speed and the lowest wheel speed is 6% or more*1 and the value of the wheel speed is continuously the slowest. |
- | ○ |
- | |
| When the difference between the highest wheel speed and the lowest wheel speed is 6% or more*1 and the wheel speed is less than 5 km/h (3 mph). |
- | - |
○ | |
|
Detection Time | Between 9 and 72 seconds or more (period changes depending on vehicle conditions). |
Between 9 and 72 seconds or more (period changes depending on vehicle conditions). |
Between 9 and 72 seconds or more (period changes depending on vehicle conditions). | |
|
Number of Trips | 1 trip |
1 trip | 1 trip | |
*1: When more than 1 wheel has a wheel speed of less than 5 km/h (3 mph), a difference of 15% is permitted.
HINT:
DTC will be output when conditions for either of the patterns in the table above are met.
CAUTION / NOTICE / HINT
NOTICE:
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Procedure |
|---|
|
PROCEDURE
|
1. | PRE-CHECK |
(a) Check that all 4 tires are of correct size, are inflated to the correct pressure, and do not show excessive signs of wear.
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HINT:
If a tire is deformed or an incorrectly sized tire or wheel is installed, this DTC may be stored.
|
| 2. |
CHECK FREEZE FRAME DATA (WHEEL SPEED) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Enter the following menus: Chassis / Brake / Trouble Codes.
(d) Select a DTC to display the Freeze Frame Data.
(e) Read the freeze frame data of DTC C05121C.
Chassis > Brake|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
FR Wheel Speed | Front wheel speed sensor RH reading |
Min.: 0.0 km/h (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 |
|
FL Wheel Speed | Front wheel speed sensor LH reading |
Min.: 0.0 km/h (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 |
|
RR Wheel Speed | Rear wheel speed sensor RH reading |
Min.: 0.0 km/h (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 |
|
RL Wheel Speed | Rear wheel speed sensor LH reading |
Min.: 0.0 km/h (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 |
|---|
| FR Wheel Speed |
|
FL Wheel Speed |
| RR Wheel Speed |
|
RL Wheel Speed |
|
Result | Proceed to |
|---|---|
|
The value of RR Wheel Speed is more than all other values. |
A |
| The value of RR Wheel Speed is less than all other values. |
B |
| The value of RR Wheel Speed is less than 5 km/h (3 mph). |
C |
| B |
| GO TO STEP 4 |
| C |
| GO TO STEP 5 |
|
| 3. |
READ VALUE USING TECHSTREAM (WHEEL SPEED) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Enter the following menus: Chassis / Brake / Data List.
Chassis > Brake > Data List|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
FR Wheel Speed | Front wheel speed sensor RH reading |
Min.: 0.0 km/h (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 |
|
FL Wheel Speed | Front wheel speed sensor LH reading |
Min.: 0.0 km/h (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 |
|
RR Wheel Speed | Rear wheel speed sensor RH reading |
Min.: 0.0 km/h (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 |
|
RL Wheel Speed | Rear wheel speed sensor LH reading |
Min.: 0.0 km/h (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 |
|---|
| FR Wheel Speed |
|
FL Wheel Speed |
| RR Wheel Speed |
|
RL Wheel Speed |
(d) Start the engine.
(e) Perform a road test under the same malfunction conditions recreated based on the Freeze Frame Data or customer problem analysis.
(f) Check the value of Wheel Speed.
OK:
The difference between the value of RR Wheel Speed and all other values is less than 6%.
HINT:
If the result of the road test is within the specified range, it is possible that this DTC was stored due to a particular situation such as wheelspin.
| OK | | USE SIMULATION METHOD TO CHECK
|
| NG | | REPLACE REAR AXLE HUB AND BEARING ASSEMBLY RH |
| 4. |
READ VALUE USING TECHSTREAM (WHEEL SPEED) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Enter the following menus: Chassis / Brake / Data List.
Chassis > Brake > Data List|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
FR Wheel Speed | Front wheel speed sensor RH reading |
Min.: 0.0 km/h (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 |
|
FL Wheel Speed | Front wheel speed sensor LH reading |
Min.: 0.0 km/h (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 |
|
RR Wheel Speed | Rear wheel speed sensor RH reading |
Min.: 0.0 km/h (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 |
|
RL Wheel Speed | Rear wheel speed sensor LH reading |
Min.: 0.0 km/h (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 |
|---|
| FR Wheel Speed |
|
FL Wheel Speed |
| RR Wheel Speed |
|
RL Wheel Speed |
(d) Start the engine.
(e) Perform a road test under the same malfunction conditions recreated based on the Freeze Frame Data or customer problem analysis.
(f) Check the value of Wheel Speed.
OK:
The difference between the value of RR Wheel Speed and all other values is less than 6%.
HINT:
If the result of the road test is within the specified range, it is possible that this DTC was stored due to a particular situation such as brake drag.
| OK | | USE SIMULATION METHOD TO CHECK
|
| NG | | REPLACE REAR AXLE HUB AND BEARING ASSEMBLY RH |
| 5. |
READ VALUE USING TECHSTREAM (RR WHEEL SPEED) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Enter the following menus: Chassis / Brake / Data List.
Chassis > Brake > Data List|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
RR Wheel Speed | Rear wheel speed sensor RH reading |
Min.: 0.0 km/h (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 |
|---|
| RR Wheel Speed |
(d) Start the engine.
(e) Perform a road test under the same malfunction conditions recreated based on the Freeze Frame Data or customer problem analysis.
(f) Check the value of RR Wheel Speed.
OK:
The value of RR Wheel Speed is 5 km/h (3 mph) or more.
HINT:
If the result of the road test is within the specified range, it is possible that this DTC was stored due to a particular situation such as wheelspin, brake drag or wheel lockup.
When a DTC is stored during operation of ABS or TRAC, the system also stores vehicle control history that can be guessed the vehicle conditions.
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| OK | | USE SIMULATION METHOD TO CHECK
|
| NG | | REPLACE REAR AXLE HUB AND BEARING ASSEMBLY RH |
Right Rear Wheel Speed Sensor Circuit Intermittent (C05121F)
Right Rear Wheel Speed Sensor Signal Stuck Low (C051223)
Right Rear Wheel Speed Sensor Signal Stuck High (C051224)
Parts Location
Disassembly