Lexus ES: Right Rear Wheel Speed Sensor Signal Stuck Low (C051223)
DESCRIPTION
Refer to DTC C051212
Click here .gif)
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| C051223 | Right Rear Wheel Speed Sensor Signal Stuck Low |
| Rear speed sensor RH (rear axle hub and bearing assembly RH) |
| Vehicle Condition | ||||
|---|---|---|---|---|
| Pattern 1 | Pattern 2 | Pattern 3 | ||
| Diagnosis Condition | The vehicle is driven from 0 km/h to 12 km/h (0 mph to 7 mph). | ○ | - | - |
| The vehicle speed reaches 18 km/h (11 mph). | - | ○ | - | |
| The vehicle speed and wheel speed are both 43.2 km/h (26.8 mph) or more. | - | - | ○ | |
| Malfunction Status | The wheel speed is 1.8 km/h (1.1 mph) or less. | ○ | - | - |
| The wheel speed has not exceeded 1.8 km/h (1.1 mph). | - | ○ | - | |
| The pulse signal is not detected. | - | - | ○ | |
| Detection Time | 0.6 seconds or more. | - | 0.08 seconds or more. | |
| Number of Trips | 1 trip | 1 trip | 1 trip | |
HINT:
DTC will be output when conditions for either of the patterns in the table above are met.
CAUTION / NOTICE / HINT
NOTICE:
-
After replacing or removing and installing a speed sensor, perform Dealer Mode (Signal Check) inspection to confirm that the speed sensors are operating correctly.
Click here
-
DTC precaution
Click here
Procedure to clear warning lights (When not clearing DTCs) Procedure
- Repair or replacement.
- Turn the engine switch on (IG).
- Drive the vehicle at 2 km/h (1 mph) or more to clear the warning lights.
PROCEDURE
| 1. | CHECK FREEZE FRAME DATA (WHEEL SPEED) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Enter the following menus: Chassis / Brake/EPB / Trouble Codes.
(d) Select a DTC to display the Freeze Frame Data.
(e) Read the freeze frame data of DTC C051223.
Chassis > Brake/EPB| 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 2 km/h (1 mph) or less when all other values are 12 km/h (7 mph) or more. | A |
| The value of RR Wheel Speed is 2 km/h (1 mph) or less when all other values are 43 km/h (27 mph) or more. | B |
| B |  | REPLACE REAR AXLE HUB AND BEARING ASSEMBLY RH |
|
| 2. | READ VALUE USING TECHSTREAM (RR 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 |
|---|---|---|---|---|
| RR Wheel Speed | Rear wheel speed sensor RH 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 |
|---|
| RR Wheel Speed |
(d) Start the engine and perform a road test.
(e) Check that the value of RR Wheel Speed changes in accordance with vehicle speed when accelerating from 0 km/h to 20 km/h (0 mph to 12 mph).
OK:
The value of RR Wheel Speed changes in accordance with vehicle speed.
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, wheelspin or wheel lockup.
| OK | | USE SIMULATION METHOD TO CHECK |
| NG | | REPLACE REAR AXLE HUB AND BEARING ASSEMBLY RH |
READ NEXT:
Right Rear Wheel Speed Sensor Signal Stuck Low (C051223)
DESCRIPTION Refer to DTC C051212 Click here DTC No. Detection Item DTC Detection Condition Trouble Area C051223 Right Rear Wheel Speed Sensor Signal Stuck Low
When the vehicle is
Right Rear Wheel Speed Sensor Signal Stuck High (C051224)
DESCRIPTION Refer to DTC C051212 Click here DTC No. Detection Item DTC Detection Condition Trouble Area C051224 Right Rear Wheel Speed Sensor Signal Stuck High The speed sensor sign
Right Rear Wheel Speed Sensor Signal Stuck High (C051224)
DESCRIPTION Refer to DTC C051212 Click here DTC No. Detection Item DTC Detection Condition Trouble Area C051224 Right Rear Wheel Speed Sensor Signal Stuck High The speed sensor sign
SEE MORE:
IGB Signal Circuit Short to Auxiliary Battery (P1CFA12)
DESCRIPTION The hybrid vehicle control ECU monitors the IGB signal received from the certification ECU (smart key ECU assembly). When an error is detected in the IGB signal, this DTC is stored. DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate P1CFA12
Installation
INSTALLATION PROCEDURE 1. INSTALL KNOCK CONTROL SENSOR HINT: Perform "Inspection After Repair" after replacing a knock control sensor. Click here (a) Temporarily install the 2 knock control sensors to the cylinder block sub-assembly with the 2 bolts so that the knock control sensor installation p
