Lexus ES manuals

Lexus ES: Multi-axis Acceleration Sensor Module "A" Circuit Voltage Out of Range (C05201C)

Lexus ES (XZ10) Service Manual / Brake / Brake Control / Dynamic Control Systems / Electronically Controlled Brake System (for Gasoline Model) / Multi-axis Acceleration Sensor Module "A" Circuit Voltage Out of Range (C05201C)

DESCRIPTION

The airbag ECU assembly has a built-in yaw rate and acceleration sensor and detects the vehicle condition.

When the skid control ECU (brake actuator assembly) detects an abnormal acceleration sensor (airbag ECU assembly) signal, or the control value calculated using the acceleration sensor (airbag ECU assembly), yaw rate sensor (airbag ECU assembly), steering angle sensor and speed sensor are compared and judged to be abnormal, this DTC is stored.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C05201C

Multi-axis Acceleration Sensor Module "A" Circuit Voltage Out of Range

  • 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.
  • When the vehicle is being driven in a straight line, the calculated lateral acceleration value based on the speed sensors, steering sensor angle and yaw rate sensor (airbag ECU assembly) differs from the value (lateral) of the acceleration sensor (airbag ECU assembly).

Acceleration sensor (airbag ECU assembly)

DTC Detection Conditions: C05201C
 

Vehicle Condition

Pattern 1

Pattern 2

Pattern 3

Pattern 4

Pattern 5

Diagnosis Condition

The vehicle is being driven and the stop light switch assembly is OFF.

-

-

-

The vehicle is being driven.

-

-

-

When the vehicle is being driven in a straight line.

-

-

-

-

Malfunction Status

The value (longitudinal) of the acceleration sensor (airbag ECU assembly) is less than -4.0 m/s2.

-

-

-

-

The value (longitudinal) of the acceleration sensor (airbag ECU assembly) is more than 4.0 m/s2.

-

-

-

-

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.

-

-

-

-

The difference in the acceleration value (longitudinal) calculated using the speed sensors and the acceleration value of the acceleration sensor (airbag ECU assembly) is more than 3.5 m/s2.

-

-

-

-

The calculated lateral acceleration value based on the speed sensors, steering sensor angle and yaw rate sensor (airbag ECU assembly) differs from the value (lateral) of the acceleration sensor (airbag ECU assembly).

-

-

-

-

Detection Time

20 seconds or more.

20 seconds or more.

4 seconds or more.

4 seconds or more.

-

Number of Trips

1 trip

1 trip

1 trip

1 trip

1 trip

HINT:

DTC will be output when conditions for either of the patterns in the table above are met.

CAUTION / NOTICE / HINT

NOTICE:

After replacing or reinstalling the yaw rate and acceleration sensor (airbag ECU assembly), perform acceleration sensor zero point calibration and store system information memorization after performing "Reset Memory".

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PROCEDURE

1.

REPLACE AIRBAG ECU ASSEMBLY

(a) Replace the yaw rate and acceleration sensor (airbag ECU assembly).

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NEXT

END

READ NEXT:

 Multi-axis Acceleration Sensor Module "A" Signal Stuck In Range (C05202A)

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) memorizes the range of the acceler

 Steering Angle Sensor Module Circuit Voltage Out of Range (C05261C)

DESCRIPTION The skid control ECU (brake actuator assembly) compares the calculated steering angle value based on the yaw rate sensor value with the actual steering angle value of the steering sensor.

 Steering Angle Sensor Module Signal Stuck In Range (C05262A)

DESCRIPTION The skid control ECU (brake actuator assembly) determines the steering angle value based on data obtained from the steering sensor, yaw rate and acceleration sensor (airbag ECU assembly).

SEE MORE:

 Components

COMPONENTS ILLUSTRATION *1 ECM *2 NO. 1 ECM BRACKET *3 NO. 2 ECM BRACKET - - N*m (kgf*cm, ft.*lbf): Specified torque - -

 Customize Parameters

CUSTOMIZE PARAMETERS CUSTOMIZE ROAD SIGN ASSIST SYSTEM NOTICE: Be sure to make a note of the current settings before customizing. (a) Customizing with the multi-information display (1) Turn the engine switch on (IG). (2) Using the steering pad switches, change the customize settings. HINT: Each item

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