DTC C13A6: Open or Short Circuit in Motor [08/2019 - 08/2021]: Description

WARNING: This page is about a different car, the 2022 Toyota Avalon, 2021 Toyota Avalon, 2020 Toyota Avalon, and 2019 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Memory	Note
C13A6	Open or Short Circuit in Motor	Detection conditions (1) Diagnosis Condition: Power switch on (IG) or electric parking brake switch (electric parking brake switch assembly) pulled to lock side with power switch off Malfunction Status: Power supply voltage and +B voltage are normal, but parking brake motor circuit Detection Time: Approximately 1 to 2 seconds Detection conditions (2) Diagnosis Condition: Power switch turned from off to on (IG) Malfunction Status: Overcurrent detected continuously from parking brake motor circuit Detection Time: Approximately 1 second Detection conditions (3) Diagnosis Condition: With the power switch on (IG), the electric parking brake switch (electric parking brake switch assembly) is changed from lock to release or release to lock 3 times repeatedly Malfunction Status: Overcurrent detected continuously from parking brake motor circuit Detection Time: -	Parking brake actuator assembly Wire harness or connector Parking brake ECU (brake actuator assembly)	DTC stored	An electric parking brake system malfunction is displayed on the multi-information display.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Memory

Note

C13A6

Open or Short Circuit in Motor

Detection conditions (1)

Diagnosis Condition:
Power switch on (IG) or electric parking brake switch (electric parking brake switch assembly) pulled to lock side with power switch off
Malfunction Status:
Power supply voltage and +B voltage are normal, but parking brake motor circuit
Detection Time:
Approximately 1 to 2 seconds

Detection conditions (2)

Diagnosis Condition:
Power switch turned from off to on (IG)
Malfunction Status:
Overcurrent detected continuously from parking brake motor circuit
Detection Time:
Approximately 1 second

Detection conditions (3)

Diagnosis Condition:
With the power switch on (IG), the electric parking brake switch (electric parking brake switch assembly) is changed from lock to release or release to lock 3 times repeatedly
Malfunction Status:
Overcurrent detected continuously from parking brake motor circuit
Detection Time:
-

Parking brake actuator assembly
Wire harness or connector
Parking brake ECU (brake actuator assembly)

DTC stored

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

DTC DETECTION CONDITIONS: C13A6

		Vehicle Condition
		Pattern 1	Pattern 2	Pattern 3	Pattern 4	Pattern 5
Diagnosis Condition	Power switch on (IG)	◦	-	-	-	-
	Electric parking brake switch (electric parking brake switch assembly) pulled to lock side with power switch off	-	◦	-	-	-
	Power switch turned from off to on (IG)	-	-	◦	-	-
	With power switch on (IG), electric parking brake switch (electric parking brake switch assembly) is changed from lock to release 3 times repeatedly	-	-	-	◦	-
	With power switch on (IG), electric parking brake switch (electric parking brake switch assembly) is changed from release to lock 3 times repeatedly	-	-	-	-	-
Malfunction Status	Voltage of power supplied to ECU is normal but malfunction exists in parking brake motor circuit	◦	◦	-	-	◦
Malfunction Status	Overcurrent is detected in the parking brake motor circuit continuously.	-	-	◦	◦	◦
Detection Time		Approximately 1 to 2 seconds	Approximately 1 to 2 seconds	Approximately 1 second	-	-
Number of Trips		1 trip	1 trip	1 trip	1 trip	1 trip

HINT:

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