Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001XOF0
Model Year Start: 2022 Model: Avalon HV Prod Date Range: [08/2021 -           ]
Title: PARKING BRAKE: ELECTRIC PARKING BRAKE SYSTEM (for HV Model): C060E19; Left Electric Parking Brake Actuator Circuit Current Above Threshold; 2022 MY Avalon HV [08/2021 -        ]

DTC

C060E19

Left Electric Parking Brake Actuator Circuit Current Above Threshold

DESCRIPTION

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Memory

Note

C060E19

Left Electric Parking Brake Actuator Circuit Current Above Threshold

When the electric parking brake is operating, overcurrent is detected in the parking brake actuator assembly LH 3 times
  • Parking brake actuator assembly LH
  • No. 2 parking brake wire assembly
  • Wire harness and connector
  • Parking brake ECU (brake actuator assembly)

DTC stored

An electric parking brake system malfunction is displayed on the combination meter assembly.

WIRING DIAGRAM

Click here 2022 MY Avalon HV [08/2021 -        ]; PARKING BRAKE: ELECTRIC PARKING BRAKE SYSTEM (for HV Model): C060B11; Left Electric Parking Brake Actuator Control Circuit Short to Ground

PROCEDURE

1.

INSPECT NO. 2 PARKING BRAKE WIRE ASSEMBLY

(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.

(b) Disconnect the YK2 and Y1 No. 2 parking brake wire assembly connectors.

(c) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

(d) Measure the resistance according to the value(s) in the table below.

*a

Front view of No. 2 Parking Brake Wire Assembly

*b

(to wire harness connector)

*c

(to Parking Brake Actuator Assembly LH)

-

-

Standard Resistance:

Tester Connection

Condition

Specified Condition

YK2-2 - Y1-2 (LE+)

Always

Below 1 Ω

YK2-2 or Y1-2 (LE+) - Body ground and other terminals

Always

10 kΩ or higher

YK2-1 - Y1-1 (LE-)

Always

Below 1 Ω

YK2-1 or Y1-1 (LE-) - Body ground and other terminals

Always

10 kΩ or higher
NG

REPLACE NO. 2 PARKING BRAKE WIRE ASSEMBLY
OK

2.

CHECK HARNESS AND CONNECTOR (PARKING BRAKE ECU (BRAKE ACTUATOR ASSEMBLY) - PARKING BRAKE ACTUATOR ASSEMBLY LH)

(a) Make sure the No. 2 parking brake wire assembly is securely installed.

(b) Disconnect the A39 parking brake ECU (brake actuator assembly) connector.

(c) Disconnect the Y1 parking brake actuator assembly LH connector.

(d) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

A39-7 (MRL+) - Y1-2 (LE+)

Always

Below 1 Ω

A39-7 (MRL+) or Y1-2 (LE+) - Body ground

Always

10 kΩ or higher

A39-8 (MRL-) - Y1-1 (LE-)

Always

Below 1 Ω

A39-8 (MRL-) or Y1-1 (LE-) - Body ground

Always

10 kΩ or higher
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

3.

INSPECT PARKING BRAKE ACTUATOR ASSEMBLY LH

Click here 2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; PARKING BRAKE: ELECTRIC PARKING BRAKE ACTUATOR: INSPECTION

NG

REPLACE PARKING BRAKE ACTUATOR ASSEMBLY LH

OK

4.

CHECK FOR SHORT TO +B

(a) Turn the power switch off.

(b) Make sure the No. 2 parking brake wire assembly is securely installed.

(c) Disconnect the Y1 parking brake actuator assembly LH connector.

(d) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

Y1-2 (LE+) - Y1-1 (LE-)

Electric parking brake not operating

Below 1 V

*a

Front view of No. 2 Parking Brake Wire Assembly

(to Parking Brake Actuator Assembly LH)
OK

REPLACE PARKING BRAKE ACTUATOR ASSEMBLY LH

NG

5.

CHECK FOR SHORT TO +B

(a) Disconnect the YK2 No. 2 parking brake wire assembly connector.

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

YK2-2 - YK2-1

Electric parking brake not operating

Below 1 V

*a

Front view of wire harness connector

(to No. 2 Parking Brake Wire Assembly)
OK

REPLACE NO. 2 PARKING BRAKE WIRE ASSEMBLY
NG

6.

CHECK FOR SHORT TO +B

(a) Disconnect the YK2 No. 2 parking brake wire assembly connector.

(b) Disconnect the A39 parking brake ECU (brake actuator assembly) connector.

(c) Measure the voltage according to the value(s) in the table below.

*a

Front view of wire harness connector

*b

(to Parking Brake ECU (Brake Actuator Assembly))

*c

(to No. 2 Parking Brake Wire Assembly)

-

-

Standard Voltage:

Tester Connection

Condition

Specified Condition

YK2-2 or A39-7 (MRL+) - Body ground

Always

Below 1 V

YK2-1 or A39-8 (MRL-) - Body ground

Always

Below 1 V
OK

REPLACE PARKING BRAKE ECU (BRAKE ACTUATOR ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR