Toyota Camry owners & service manuals

Toyota Camry (XV70): Multi-axis Acceleration Sensor Module "A" Missing Calibration (C051D54)

DESCRIPTION

The airbag sensor 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 sensor assembly) via CAN communication.

HINT:

If a communication error with the yaw rate and acceleration sensor (airbag sensor 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.

  • Acceleration sensor (airbag sensor assembly) installation
  • Acceleration sensor (airbag sensor assembly)
  • Skid control ECU (brake actuator assembly)

CAUTION / NOTICE / HINT

NOTICE:

  • After replacing the skid control ECU (brake actuator assembly), perform acceleration sensor zero point calibration and system information memorization.

    Click here

  • After replacing or reinstalling the yaw rate and acceleration sensor (airbag sensor assembly), perform acceleration sensor zero point calibration and 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 / Utility / Reset Memory.

(d) Clear the zero point calibration data and system information.

Click here

Chassis > Brake > Utility

Tester Display

Reset Memory

(e) Perform acceleration sensor zero point calibration and system information memorization.

Click here

Chassis > Brake > Utility

Tester Display

Calibration

NEXT

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 / Trouble Codes.

Chassis > Brake > 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 / Trouble Codes.

Chassis > Brake > Trouble Codes

(h) Check if the same DTC is output.

Result

Proceed to

C051D54 is not output

A

C051D54 is output

B

A

END

B

3.

CHECK AIRBAG SENSOR ASSEMBLY INSTALLATION

(a) Check that the yaw rate and acceleration sensor (airbag sensor assembly) has been installed properly.

Click here

OK:

The yaw rate and acceleration sensor (airbag sensor assembly) is tightened to the specified torque.

The yaw rate and acceleration sensor (airbag sensor assembly) is not installed in a tilted position.

NG

INSTALL AIRBAG SENSOR ASSEMBLY CORRECTLY

OK

4.

READ VALUE USING TECHSTREAM (LATERAL G AND FORWARD AND REAWARD G)

(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

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 > Data List

Tester Display

Lateral G

Forward and Rearward G

(d) Check the acceleration sensor (airbag sensor assembly) output value displayed on the Techstream.

OK:

The acceleration sensor (airbag sensor assembly) output value is normal.

OK

REPLACE BRAKE ACTUATOR ASSEMBLY

NG

REPLACE AIRBAG SENSOR ASSEMBLY

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