Toyota Avalon Service & Repair Manual: Deceleration Sensor (C1245)

DESCRIPTION

The parking brake ECU (brake actuator assembly) receives vehicle tilt angle information from the deceleration sensor (airbag ECU assembly) via CAN communication.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Memory

Note

C1245

Deceleration Sensor

One of following conditions is met:

  • An error signal is sent from deceleration sensor (airbag ECU assembly) for approximately 0.3 seconds.
  • While the deceleration sensor (airbag ECU assembly) signal is judged to be stuck, starting off and stopping of vehicle occurs 16 times.
  • Comparison error between deceleration sensor (airbag ECU assembly) 1 and deceleration sensor (airbag ECU assembly) 2 output values occurs for 60 seconds or more.

Deceleration sensor (Airbag ECU assembly)

DTC stored

An electric parking brake system malfunction is displayed on the multi-information display.

DTC Detection Conditions
 

Vehicle Condition

Pattern 1

Pattern 2

Pattern 3

Diagnosis Condition

Power switch on (IG)

Malfunction Status

An error signal is sent from the deceleration sensor (airbag ECU assembly)

-

-

While the deceleration sensor (airbag ECU assembly) signal is judged to be stuck, starting off and stopping the vehicle occurs 16 times

-

-

Comparison error between deceleration sensor (airbag ECU assembly) 1 and deceleration sensor (airbag ECU assembly) 2 output values occurs

-

-

Detection Time

Approximately 0.3 seconds

-

60 seconds or more

Number of Trips

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:

When replacing the deceleration sensor (airbag ECU assembly), perform initialization and calibration of the linear solenoid valve.

Click here

PROCEDURE

1.

CHECK DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM)

(a) Check for DTCs.

Chassis > ABS/VSC/TRAC > Trouble Codes

Result

Proceed to

DTC is not output

A

DTC is output

B

B

GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM

A

2.

CHECK DTC (ELECTRIC PARKING BRAKE SYSTEM)

(a) Clear the DTCs.

Chassis > Electric Parking Brake > Clear DTCs

(b) Turn the power switch off.

(c) Check for DTCs.

Chassis > Electric Parking Brake > Trouble Codes

Result

Proceed to

DTCs are output

A

DTCs are not output

B

A

REPLACE AIRBAG ECU ASSEMBLY

B

USE SIMULATION METHOD TO CHECK

    EPB Switch Malfunction (C13B4)

    Data List / Active Test

    See More:

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