Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: EPB High Temperature (C13AA)

DESCRIPTION

If the electric parking brake is used continuously, system operation is stopped to prevent the parking brake actuator assembly from overheating.

This DTC is stored when system operation is stopped to prevent the parking brake actuator assembly from overheating and is not a malfunction.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Memory

Note

C13AA

EPB High Temperature

Both of following conditions are met:

Electric parking brake is operating
Lock and release operations are performed 10 times without 2 seconds periods of no operation; or lock and release operations are performed 5 times without 2 seconds periods of no operation, and target current is not applied during lock control

Overheat due to continuous use of system

DTC stored

A warning is displayed on the multi-information display indicating electric parking brake system operation is stopped due to high temperatures.

DTC Detection Conditions

		Vehicle Condition
		Pattern 1	Pattern 2
Diagnosis Condition	Electric parking brake is operating	○	○
Malfunction Status	Lock and release operations are performed without 2 seconds interval 10 times	○	-
Malfunction Status	Lock and release operations are performed without 2 seconds interval 5 times, and target current is not achieved during lock control	-	○
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.

PROCEDURE

1.	ELECTRIC PARKING BRAKE OVERHEAT

(a) With the overheat warning displayed on the multi-information display, wait for approximately 1 minute.

(b) Check that the overheat warning has disappeared.

HINT:

Check the display after turning the power switch off and on (IG).
After the warning has disappeared and the electric parking brake system returns to normal, clear the DTCs.

Chassis > Electric Parking Brake > Clear DTCs

END

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