| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM100000001EAAE |
| Model Year Start: 2019 | Model: RAV4 | Prod Date Range: [11/2018 - ] |
| Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/ Vacuum Brake Booster): C052646; Steering Angle Sensor Module Calibration / Parameter Memory Failure; 2019 - 2024 MY RAV4 RAV4 HV [11/2018 - ] | ||
|
DTC |
C052646 |
Steering Angle Sensor Module Calibration / Parameter Memory Failure |
DESCRIPTION
When the vehicle is being driven in a straight line at 15 km/h (9 mph) for 1 second or more, the skid control ECU (brake actuator assembly) calculates the steering sensor zero point and updates the zero point if the difference between the calculated zero point and current zero point is between 10° and 15°. The ECU also stores previous zero points.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
|
C052646 |
Steering Angle Sensor Module Calibration / Parameter Memory Failure |
After the steering sensor zero point is obtained, the zero point is lost due to power supply fluctuations, etc. and cannot be reobtained when the vehicle speed is 15 km/h (9 mph) or more. |
|
CAUTION / NOTICE / HINT
NOTICE:
Because this DTC is related to a temporary loss of steering sensor zero point calibration, before proceeding with the inspection, it is useful to confirm whether the power source voltage was interrupted by an operation such as removal or disconnection of the battery.
HINT:
-
When DTC U007488 and/or U012687 is output together with DTC C052646, inspect and repair the trouble areas indicated by DTC U007488 and/or U012687 first.
Click here
![2019 - 2024 MY RAV4 RAV4 HV [11/2018 - ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/ Vacuum Brake Booster): U007488,...,U015187; Control Module Communication Bus "B" Off Bus Off](/t3Portal/stylegraphics/info.gif)
- If a speed sensor, yaw rate and acceleration sensor (airbag ECU assembly) is malfunctioning, the steering sensor may also appear to be malfunctioning even when normal.
- If DTCs related to a speed sensor, yaw rate and acceleration sensor (airbag ECU assembly) are output, perform troubleshooting for those DTCs before inspecting the steering sensor.
PROCEDURE
|
1. |
CHECK DTC |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Operate the Techstream to clear the codes. Enter the following menus: Chassis / Brake/EPB / Trouble Codes.
Chassis > Brake/EPB > Clear DTCs
(d) Press the DTC clear button.
(e) Turn the ignition switch off.
(f) Turn the ignition switch to ON again and check that no CAN communication system DTCs are output.
Click here
(g) Start the engine and perform a road test.
(h) Drive the vehicle at a speed of 15 km/h (9 mph) and turn the steering wheel to the right and left.
(i) Check that no speed sensor or yaw rate and acceleration sensor (airbag ECU assembly) DTCs are output. Enter the following menus: Chassis / Brake/EPB / Trouble Codes.
Chassis > Brake/EPB > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
C052646 is output. |
A |
|
CAN communication system DTCs are output. |
B |
|
Speed sensor and/or yaw rate and acceleration sensor (airbag ECU assembly) DTCs are output. |
C |
|
C052646 is not output. |
D |
HINT:
- If a speed sensor or the yaw rate and acceleration sensor (airbag ECU assembly) is malfunctioning, DTCs for the steering sensor may be stored even though the steering sensor is normal.
- If speed sensor and yaw rate and acceleration sensor (airbag ECU assembly) DTCs are output simultaneously, repair these malfunctions and then inspect the steering sensor.
- If DTC C052646 is not output again, the DTC may have been stored due to a temporary loss of steering sensor zero point calibration, such as a loss of calibration due to the power source voltage being low.
| B |
|
| C |
|
REPAIR CIRCUITS INDICATED BY OUTPUT DTCS
|
| D |
|
|
|
2. |
CHECK STEERING SENSOR ZERO POINT CALIBRATION |
(a) Drive the vehicle straight ahead at 15 km/h (9 mph) or more for at least 1 second.
(b) Check that the steering wheel is correctly centered while driving straight ahead.
OK:
The steering wheel is correctly centered.
HINT:
If front wheel alignment and steering are adjusted as a result of an off-center steering wheel, acquire the yaw rate and acceleration sensor zero point again after the adjustments are completed.
| NG |
|
ADJUST FRONT WHEEL ALIGNMENT OR STEERING POSITION
|
|
|
3. |
RECONFIRM DTC |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Operate the Techstream to clear the codes. Enter the following menus: Chassis / Brake/EPB / Trouble Codes.
Chassis > Brake/EPB > Clear DTCs
(d) Press the DTC clear button.
(e) Turn the ignition switch off.
(f) Start the engine and perform a road test.
(g) Drive the vehicle at a speed of 15 km/h (9 mph) and turn the steering wheel to the right and left.
(h) Read the DTCs following the prompts on the Techstream. Enter the following menus: Chassis / Brake/EPB / Trouble Codes.
Chassis > Brake/EPB > Trouble Codes
(i) Check if the same DTC is output.
|
Result |
Proceed to |
|---|---|
|
C052646 is not output. |
A |
|
C052646 is output. |
B |
HINT:
If DTC C052646 is not output again, the DTC may have been stored due to a temporary loss of the steering sensor zero point calibration, such as a loss of calibration due to the power source voltage being low.
| A |
|
END |
| B |
|
REPLACE STEERING SENSOR
|
|
|