Toyota Corolla Cross: Multi-axis Acceleration Sensor Module "A" Circuit Voltage Out of Range (C05201C,...,C117828)

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	MIL	DTC Output from	Note
C05201C	Multi-axis Acceleration Sensor Module "A" Circuit Voltage Out of Range	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 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)	Comes on	Brake/EPB	SAE Code: C051C (Case 1, 4 and 5) Output ECU: Skid control ECU (brake actuator assembly)
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)	Comes on	Brake/EPB	SAE Code: C051C (Case 2) Output ECU: Skid control ECU (brake actuator assembly)
C11781C	Multi-axis Acceleration Sensor Module "A" Circuit Voltage Out of Range	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.	Acceleration sensor (airbag ECU assembly) installation Acceleration sensor (airbag ECU assembly)	Does not come on	Brake/EPB	Output ECU: Skid control ECU (brake actuator assembly)
C117828	Multi-axis Acceleration Sensor Module "A" Signal Bias Level Out of Range / Zero Adjustment Failure	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)	Does not come on	Brake/EPB	Output ECU: Skid control ECU (brake actuator assembly)

MONITOR DESCRIPTION

C051C (Case 1):

• When CAN communication of the yaw rate and acceleration sensor (airbag ECU assembly) is valid, and the longitudinal acceleration sensor (airbag ECU assembly) signal is more than a certain value, the skid control ECU (brake actuator assembly) illuminates the MIL and stores this DTC.

C051C (Case 4):

• When CAN communication of the yaw rate and acceleration sensor (airbag ECU assembly) is valid, ABS is not operating, the stop light switch assembly is off, the vehicle speed is a certain value or more, and one of the following conditions are met, the skid control ECU (brake actuator assembly) illuminates the MIL and stores this DTC.
  • The vehicle speed is less than a certain value and the longitudinal acceleration sensor (airbag ECU assembly) signal is more than a certain value.
  • The vehicle speed is within a certain range and the longitudinal acceleration sensor (airbag ECU assembly) signal is more than a certain value.
  • The vehicle speed is exceeding a certain value and the longitudinal acceleration sensor (airbag ECU assembly) signal is more than a certain value.

C051C (Case 5):

• When CAN communication of the yaw rate and acceleration sensor (airbag ECU assembly) is valid, ABS/TRAC/VSC is not operating, the vehicle is being driven in the forward direction, and any of the following conditions are met, the skid control ECU (brake actuator assembly) illuminates the MIL and stores this DTC.
  • The vehicle speed is less than a certain value and the difference between the longitudinal acceleration sensor (airbag ECU assembly) signal and calculated acceleration rate based on the vehicle speed is greater than a certain value.
  • The vehicle speed is within a certain range and the difference between the longitudinal acceleration sensor (airbag ECU assembly) signal and calculated acceleration rate based on the vehicle speed is greater than a certain value.
  • The vehicle speed is exceeding a certain value and the difference between the longitudinal acceleration sensor (airbag ECU assembly) signal and calculated acceleration rate based on the vehicle speed is greater than a certain value.

C051C (Case 2):

• When CAN communication of the yaw rate and acceleration sensor (airbag ECU assembly) is valid, and the longitudinal acceleration sensor (airbag ECU assembly) signal is more than a certain value, the skid control ECU (brake actuator assembly) illuminates the MIL and stores this DTC.

MONITOR STRATEGY

Related DTCs	C051C (Case 1): Longitudinal acceleration sensor range monitoring C051C (Case 4): Longitudinal acceleration sensor rationality (high acceleration) C051C (Case 5): Longitudinal acceleration sensor rationality (relationship between vehicle acceleration and longitudinal acceleration sensor ) C051C (Case 2): Longitudinal acceleration sensor offset monitoring
Required Sensors/Components(Main)	Acceleration sensor (airbag ECU assembly) Speed sensor Skid control ECU (brake actuator assembly)
Required Sensors/Components(Related)	Skid control ECU (brake actuator assembly) Stop light switch assembly Speed sensor
Frequency of Operation	Continuous
Duration	3 seconds: C051C (Case 1) 4 seconds: C051C (Case 5) 20 seconds: C051C (Case 4) Immediately: C051C (Case 2)
MIL Operation	2 driving cycles
Sequence of Operation	None

TYPICAL ENABLING CONDITIONS

Monitor runs whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

-

COMPONENT OPERATING RANGE

TMC's intellectual property

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CONFIRMATION DRIVING PATTERN

NOTICE:

When performing the normal judgment procedure, make sure that the driver door is closed and is not opened at any time during the procedure.

HINT:

• After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
• When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.

1. Connect the GTS to the DLC3.
2. Turn the ignition switch to ON and turn the GTS on.
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
4. Turn the ignition switch off.
5. Turn the ignition switch to ON (READY) and turn the GTS on.
6. Input the DTC: C05201C
   1. Drive the vehicle at a speed of 6 km/h (4 mph) or more for 3 seconds or more. [*]

      HINT:

      [*]: Normal judgment procedure.

      The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.

7. Input the DTC: C052028
   1. Drive the vehicle a distance of 2 km (1.24 mile) or more.

      HINT:

      [*]: Normal judgment procedure.

      The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.

8. Enter the following menus: Chassis / Brake/EPB* / Utility / All Readiness.

   *: Electric Parking Brake System

9. Check the DTC judgment result.

   HINT:

   • If the judgment result shows NORMAL, the system is normal.
   • If the judgment result shows ABNORMAL, the system has a malfunction.
   • If the judgment result shows INCOMPLETE, perform driving pattern again.

PROCEDURE

1.

CHECK DTC

(a) Read the DTCs using the GTS.

Chassis > Brake/EPB > Trouble Codes

Result	Proceed to
C05201C or C052028 is output	A
C11781C or C117828 is output	B

B

GO TO STEP 5

A

2.	CHECK FREEZE FRAME DATA (FORWARD AND REARWARD G)

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

(b) Read the freeze frame data of DTC C05201C or C052028.

Chassis > Brake/EPB

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
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(C05201C) > Freeze Frame Data

Tester Display
Forward and Rearward G

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

Tester Display
Forward and Rearward G

Result	Proceed to
The value of 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 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

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 VEHICLE SPEED)

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

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

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

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, or the value of Lateral 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 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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