Toyota Camry owners & service manuals

Toyota Camry (XV70): Brake Pressure Sensor "A" Circuit Voltage Out of Range (C05401C,C054028,C054049)

DESCRIPTION

The master cylinder pressure sensor is connected to the skid control ECU in the brake actuator assembly.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C05401C

Brake Pressure Sensor "A" Circuit Voltage Out of Range

The voltage of the master cylinder pressure sensor signal is less than 0.129 V or more than 3.29 V for 0.1 seconds or more.

Skid control ECU (brake actuator assembly)

C054028

Brake Pressure Sensor "A" Signal Bias Level Out of Range / Zero Adjustment Failure

When the stop light switch assembly is off, the zero point of the master cylinder pressure sensor is less than -1.5 MPa (-15.3 kgf/cm2, -218 psi) or more than 1.5 MPa (15.3 kgf/cm2, 218 psi).

Skid control ECU (brake actuator assembly)

C054049

Brake Pressure Sensor "A" Internal Electronic Failure

An internal malfunction of the master cylinder pressure sensor is detected during the self test.

Skid control ECU (brake actuator assembly)

DTC Detection Conditions: C05401C
 

Vehicle Condition

Pattern 1

Pattern 2

Diagnosis Condition

-

-

-

Malfunction Status

The voltage of the master cylinder pressure sensor signal is less than 0.129 V.

-

The voltage of the master cylinder pressure sensor signal is more than 3.29 V.

-

Detection Time

0.1 seconds or more.

0.1 seconds or more.

Number of Trips

1 trip

1 trip

HINT:

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

DTC Detection Conditions: C054028
 

Vehicle Condition

Pattern 1

Pattern 2

Diagnosis Condition

The stop light switch assembly is off.

Malfunction Status

The zero point of the master cylinder pressure sensor is less than -1.5 MPa (-15.3 kgf/cm2, -218 psi).

-

The zero point of the master cylinder pressure sensor is more than 1.5 MPa (15.3 kgf/cm2, 218 psi).

-

Detection Time

-

-

Number of Trips

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

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PROCEDURE

1.

REPLACE BRAKE ACTUATOR ASSEMBLY

(a) Replace the skid control ECU (brake actuator assembly).

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NEXT

END

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