Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001AZ8N
Model Year Start: 2019 Model: Avalon Prod Date Range: [04/2018 - 08/2021]
Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model): C146E; Open Circuit in ABS Solenoid Relay Circuit; 2019 - 2021 MY Avalon [04/2018 - 08/2021]

DTC

C146E

Open Circuit in ABS Solenoid Relay Circuit

DESCRIPTION

The ABS solenoid relay is built into the skid control ECU in the brake actuator assembly. The ABS solenoid relay supplies power to the ABS and TRAC solenoids. The skid control ECU (brake actuator assembly) detects an ABS solenoid relay malfunction by performing a self check and relay operation check.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C146E

Open Circuit in ABS Solenoid Relay Circuit

Either of the following is detected:

  1. The ABS solenoid relay drive circuit in the skid control ECU (brake actuator assembly) is malfunctioning.
  2. The ABS solenoid relay cannot be switched between on and off.
  • ABS NO. 2 fuse
  • ABS solenoid relay circuit
  • ABS solenoid relay (brake actuator assembly)

DTC Detection Conditions: C146E

 

Vehicle Condition

Pattern 1

Pattern 2

Diagnosis Condition

-

-

-

Malfunction Status

The ABS solenoid relay drive circuit in the skid control ECU (brake actuator assembly) is malfunctioning.

○

-

The ABS solenoid relay cannot be switched between on and off.

-

○

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.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • When replacing the skid control ECU (brake actuator assembly), perform system variant learning and acceleration sensor zero point calibration.

    Click here 2019 - 2021 MY Avalon [04/2018 - 08/2021]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model): CALIBRATION

  • Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE

1.

REPLACE BRAKE ACTUATOR ASSEMBLY

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

Click here 2019 - 2020 MY Avalon [04/2018 - 08/2020]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: BRAKE ACTUATOR (for Gasoline Model): REMOVAL 2021 MY Avalon [08/2020 - 08/2021]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: BRAKE ACTUATOR (for Gasoline Model): REMOVAL

HINT:

This DTC is output when the skid control ECU (brake actuator assembly) detects a malfunction in an internal circuit.

(b) Enter the following menus: Chassis / ABS/VSC/TRAC/EPB / Utility / Test Mode.

(c) Perform system variant learning and acceleration sensor zero point calibration.

Click here 2019 - 2021 MY Avalon [04/2018 - 08/2021]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model): CALIBRATION

Chassis > ABS/VSC/TRAC/EPB > Utility

Tester Display

Test Mode

(d) Enter the following menus: Chassis / ABS/VSC/TRAC/EPB / Utility / Signal Check.

(e) Perform the sensor check using the Test Mode (Signal Check) procedure.

Click here 2019 - 2020 MY Avalon [04/2018 - 08/2020]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model): TEST MODE PROCEDURE 2021 MY Avalon [08/2020 - 08/2021]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model): TEST MODE PROCEDURE

Chassis > ABS/VSC/TRAC/EPB > Utility

Tester Display

Signal Check
NEXT

END