Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Multi-axis Acceleration Sensor Module "A" (4WD) Signal Bias Level Out of Range / Zero Adjustment Failure (C052028,...,C117896)

Toyota Corolla Cross (2022-2025) Service Manual / Brake / Brake Control / Dynamic Control Systems / Electronically Controlled Brake System (for Gasoline Model) / Multi-axis Acceleration Sensor Module "A" (4WD) Signal Bias Level Out of Range / Zero Adjustment Failure (C052028,...,C117896)

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.

These DTCs may be stored if one of the following occurs:

  • Yaw rate and acceleration sensor (airbag ECU assembly) installation abnormality.
  • Yaw rate and acceleration sensor signal malfunction.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Note

C052028

Multi-axis Acceleration Sensor Module "A" (4WD) Signal Bias Level Out of Range / Zero Adjustment Failure

When the vehicle is being driven, the offset of the acceleration sensor is less than -2.25 m/s2 or more than 2.25 m/s2.
  • Acceleration sensor (airbag ECU assembly) installation
  • Acceleration sensor (airbag ECU assembly)

for AWD

C052096

Multi-axis Acceleration Sensor Module "A" Component Internal Failure
  • With the +BS terminal voltage between 9.6 and 16.5 V, an acceleration sensor internal malfunction signal is received from the acceleration sensor (airbag ECU assembly).
  • The value (Forward and rearward G) of the acceleration sensor is less than -14.6 m/s2 or more than 14.6 m/s2 for 3 seconds or more.
  • When the vehicle is stopped, the value (lateral) of the acceleration sensor is less than -7 m/s2 or more than 7 m/s2 for 0.4 seconds or more.
  • The value (lateral) of the acceleration sensor is less than -14.6 m/s2 or more than 14.6 m/s2 for 0.8 seconds or more.
  • Acceleration sensor (airbag ECU assembly) installation
  • Acceleration sensor (airbag ECU assembly)

for AWD

C11781C

Multi-axis Acceleration Sensor Module "A" (2WD) Circuit Voltage Out of Range
  • When the vehicle is stopped, the value of the acceleration sensor is less than -7 m/s2 or more than 7 m/s2 for 0.4 seconds or more.
  • The value (forward and rearward G) of the acceleration sensor is less than -14.6 m/s2 or more than 14.6 m/s2 for 3 seconds or more.
  • The value (lateral) of the acceleration sensor is less than -14.6 m/s2 or more than 14.6 m/s2 for 0.8 seconds or more.
  • When the vehicle is being driven and the stop light switch assembly is OFF, the value (longitudinal) of the acceleration sensor (airbag ECU assembly) is less than -4.0 m/s2 or more than 4.0 m/s2 for 20 seconds or more.
  • When the vehicle is being driven, the difference in the acceleration value (longitudinal) calculated using the speed sensors and the acceleration value of the acceleration sensor (airbag ECU assembly) is less than -3.5 m/s2 or more than 3.5 m/s2 for 4 seconds or more.
  • Acceleration sensor (airbag ECU assembly) installation
  • Acceleration sensor (airbag ECU assembly)

for 2WD

C117828

Multi-axis Acceleration Sensor Module "A" (2WD) Signal Bias Level Out of Range / Zero Adjustment Failure

When the vehicle is being driven, the offset of the acceleration sensor is less than -2.25 m/s2 or more than 2.25 m/s2.
  • Acceleration sensor (airbag ECU assembly) installation
  • Acceleration sensor (airbag ECU assembly)

for 2WD

C117896

Multi-axis Acceleration Sensor Module "A" (2WD) Component Internal Failure

With the +BS terminal voltage between 9.6 and 16.5 V, an acceleration sensor internal malfunction signal is received from the acceleration sensor (airbag ECU assembly).
  • Acceleration sensor (airbag ECU assembly) installation
  • Acceleration sensor (airbag ECU assembly)

for 2WD

PROCEDURE

1.

CHECK VEHICLE

(a) Check the vehicle specification.

Result

Proceed to

for 2WD

A

for AWD

B
B

GO TO STEP 5

A

2.

CHECK FREEZE FRAME DATA (LATERAL G AND FORWARD AND REARWARD G)

(a) Select a DTC to display the Freeze Frame Data.

(b) Read the freeze frame data of DTC C11781C, C117828 or C117896.

Chassis > Brake/EPB

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 > DTC(C11781C) > Freeze Frame Data

Tester Display

Lateral G

Forward and Rearward G
Chassis > Brake/EPB > DTC(C117828) > Freeze Frame Data

Tester Display

Lateral G

Forward and Rearward G
Chassis > Brake/EPB > DTC(C117896) > Freeze Frame Data

Tester Display

Lateral G

Forward and Rearward G

Result

Proceed to

The value of Lateral G or Forward and rearward G is less than -14.6 m/s2 or more than 14.6 m/s2.

A

Other than above.

B
A

REPLACE AIRBAG ECU ASSEMBLY

B

3.

CHECK FREEZE FRAME DATA (LATERAL G AND VEHICLE SPEED)

(a) Select a DTC to display the Freeze Frame Data.

(b) Read the freeze frame data of DTC C11781C, C117828 or C117896.

Chassis > Brake/EPB

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

Vehicle Speed

Vehicle speed (vehicle speed used for each control)

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
Chassis > Brake/EPB > DTC(C11781C) > Freeze Frame Data

Tester Display

Lateral G

Vehicle Speed
Chassis > Brake/EPB > DTC(C117828) > Freeze Frame Data

Tester Display

Lateral G

Vehicle Speed
Chassis > Brake/EPB > DTC(C117896) > Freeze Frame Data

Tester Display

Lateral G

Vehicle Speed

Result

Proceed to

The value of Vehicle speed is 0 km/h (0 mph) and the value of Lateral G is less than -7 m/s2 or more than 7 m/s2.

A

Other than above.

B
A

REPLACE AIRBAG ECU ASSEMBLY

B

4.

CHECK AIRBAG ECU ASSEMBLY INSTALLATION

(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.

OK

REPLACE AIRBAG ECU ASSEMBLY

NG

INSTALL AIRBAG ECU ASSEMBLY CORRECTLY

5.

CHECK FREEZE FRAME DATA (LATERAL G AND FORWARD AND REARWARD G)

(a) Select a DTC to display the Freeze Frame Data.

(b) Read the freeze frame data of DTC C052028 and/or C052096.

Chassis > Brake/EPB

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 > DTC(C052028) > Freeze Frame Data

Tester Display

Lateral G

Forward and Rearward G
Chassis > Brake/EPB > DTC(C052096) > Freeze Frame Data

Tester Display

Lateral G

Forward and Rearward G

Result

Proceed to

The value of Lateral G or Forward and rearward G is less than -14.6 m/s2 or more than 14.6 m/s2.

A

Other than above.

B
A

REPLACE AIRBAG ECU ASSEMBLY

B

6.

CHECK FREEZE FRAME DATA (LATERAL G AND VEHICLE SPEED)

(a) Select a DTC to display the Freeze Frame Data.

(b) Read the freeze frame data of DTC C052028 and/or C052096.

Chassis > Brake/EPB

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

Vehicle Speed

Vehicle speed (vehicle speed used for each control)

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
Chassis > Brake/EPB > DTC(C052028) > Freeze Frame Data

Tester Display

Lateral G

Vehicle Speed
Chassis > Brake/EPB > DTC(C052096) > Freeze Frame Data

Tester Display

Lateral G

Vehicle Speed

Result

Proceed to

The value of Vehicle speed is 0 km/h (0 mph) and the value of Lateral G is less than -7 m/s2 or more than 7 m/s2.

A

Other than above.

B
A

REPLACE AIRBAG ECU ASSEMBLY

B

7.

CHECK AIRBAG ECU ASSEMBLY INSTALLATION

(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.

OK

REPLACE AIRBAG ECU ASSEMBLY

NG

INSTALL AIRBAG ECU ASSEMBLY CORRECTLY

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