| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM100000001EAA8 |
| 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): C051D54; Multi-axis Acceleration Sensor Module "A" Missing Calibration; 2019 - 2024 MY RAV4 RAV4 HV [11/2018 - ] | ||
|
DTC |
C051D54 |
Multi-axis Acceleration Sensor Module "A" Missing Calibration |
DESCRIPTION
The airbag ECU assembly has a built-in yaw rate and acceleration sensor and detects the vehicle condition.
The skid control ECU (brake actuator assembly) receives signals from the yaw rate and acceleration sensor (airbag ECU assembly) via CAN communication.
HINT:
If a communication error with the yaw rate and acceleration sensor (airbag ECU assembly) is detected, DTCs U012587 and U015187 are stored.
The DTC is also stored when the calibration has not been completed.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
|
C051D54 |
Multi-axis Acceleration Sensor Module "A" Missing Calibration |
Zero point calibration of acceleration sensor undone. |
|
CAUTION / NOTICE / HINT
NOTICE:
-
After replacing the skid control ECU (brake actuator assembly), perform acceleration sensor zero point calibration and store system information memorization.
Click here
![2019 - 2024 MY RAV4 RAV4 HV [11/2018 - ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/ Vacuum Brake Booster): UTILITY](/t3Portal/stylegraphics/info.gif)
-
After replacing or reinstalling the yaw rate and acceleration sensor (), perform acceleration sensor zero point calibration and store system information memorization after performing "Reset Memory".
Click here
PROCEDURE
|
1. |
PERFORM ACCELERATION SENSOR ZERO POINT CALIBRATION |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Enter the following menus: Chassis / Brake/EPB / Utility / Reset Memory.
(d) Clear the zero point calibration data and system information.
Click here
Chassis > Brake/EPB > Utility
|
Tester Display |
|---|
|
Reset Memory |
(e) Perform acceleration sensor zero point calibration and store system information memorization.
Click here
Chassis > Brake/EPB > Utility
|
Tester Display |
|---|
|
Calibration |
|
|
2. |
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) Turn the ignition switch to ON.
(g) Read the DTCs following the prompts on the Techstream. Enter the following menus: Chassis / Brake/EPB / Trouble Codes.
Chassis > Brake/EPB > Trouble Codes
(h) Check if the same DTC is output.
|
Result |
Proceed to |
|---|---|
|
C051D54 is not output |
A |
|
C051D54 is output |
B |
| A |
|
END |
|
|
3. |
CHECK AIRBAG ECU ASSEMBLY |
(a) Check that the yaw rate and acceleration sensor (airbag ECU assembly) has been installed properly.
Click here
OK:
The yaw rate and acceleration sensor (airbag ECU assembly) is tightened to the specified torque.
The yaw rate and acceleration sensor (airbag ECU assembly) is not installed in a tilted position.
| NG |
|
INSTALL AIRBAG ECU ASSEMBLY
|
|
|
4. |
READ VALUE USING TECHSTREAM (ACCELERATION SENSOR) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Enter the following menus: Chassis / Brake/EPB / Data List.
Chassis > Brake/EPB > Data List
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Lateral G |
Lateral G |
Min.: -25.105 m/s2 Max.: 24.908 m/s2 |
Turning right: -25.105 to 0.000 m/s2 Turning left: 0.000 to 24.908 m/s2 |
During turning: Changes in proportion with lateral acceleration |
|
Forward and Rearward G |
Forward and rearward G |
Min.: -25.105 m/s2 Max.: 24.908 m/s2 |
During deceleration: -25.105 to 0.000 m/s2 During acceleration: 0.000 to 24.908 m/s2 |
During acceleration/deceleration: Changes in proportion with acceleration |
Chassis > Brake/EPB > Data List
|
Tester Display |
|---|
|
Lateral G |
|
Forward and Rearward G |
(d) Check the acceleration sensor (airbag ECU assembly) output value displayed on the Techstream.
OK:
The acceleration sensor (airbag ECU assembly) output value is normal.
| OK |
|
REPLACE BRAKE ACTUATOR ASSEMBLY
|
| NG |
|
REPLACE AIRBAG ECU ASSEMBLY
|
|
|