ELECTRIC PARKING BRAKE SYSTEM, Diagnostic DTC:C13A0, C13A5, C13B0

DTC Code	DTC Name
C13A0	Open Circuit in Power Source Circuit
C13A5	Electric Current of Motor
C13B0	Electric Parking Brake ECU Malfunction

DESCRIPTION

13A0, C13A5 and C13B0 are stored when a malfunction occurs in the internal power supply of the parking brake ECU assembly.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Memory	Note
C13A0	Open Circuit in Power Source Circuit	Diagnosis Condition: Electric parking brake switch assembly is operated to lock side with power switch off or power switch is turned on (IG) Malfunction Status: Open circuit in parking brake ECU assembly internal power source relay Malfunction Duration: Approximately 0.5 seconds	Parking brake ECU assembly	Yes	An electric parking brake system malfunction is displayed on the multi-information display.
C13A5	Electric Current of Motor	Diagnosis Condition: Electric parking brake switch assembly is operated to lock side with power switch off or power switch is turned on (IG) Malfunction Status: Parking brake ECU assembly internal current value malfunction Malfunction Duration: 0.3 seconds when parking brake is operating or approximately 0.5 seconds when parking brake is not operating	Parking brake ECU assembly	Yes	An electric parking brake system malfunction is displayed on the multi-information display.
C13B0	Electric Parking Brake ECU Malfunction	Diagnosis Condition: Electric parking brake switch assembly is operated to lock side with power switch off or power switch is turned on (IG) Malfunction Status: Parking brake ECU assembly internal voltage malfunction or EEPROM malfunction Malfunction Duration: Approximately 0.5 seconds	Parking brake ECU assembly	Yes	An electric parking brake system malfunction is displayed on the multi-information display.

DTC Detection Condition Combination Table: C13A0
		Vehicle Condition
		Pattern 1	Pattern 2
Diagnosis Condition	Electric parking brake switch assembly is operated to lock side with power switch off	○	-
Diagnosis Condition	Power switch on (IG)	-	○
Malfunction Status	Open circuit in parking brake ECU assembly internal power source relay	○	○
Detection Time		Approximately 0.5 seconds	Approximately 0.5 seconds
Trip Count		1 trip	1 trip

Tech Tips

If the conditions match either of these patterns, a DTC will be output.

DTC Detection Condition Combination Table: C13A5
		Vehicle Condition
		Pattern 1	Pattern 2	Pattern 3	Pattern 4
Diagnosis Condition	Electric parking brake switch assembly is operated to lock side with power switch off	○	-	○	-
Diagnosis Condition	Power switch on (IG)	-	○	-	○
Malfunction Status	Parking brake ECU assembly internal current value malfunction	○	○	○	○
Detection Time		0.3 seconds when parking brake is operating	0.3 seconds when parking brake is operating	Approximately 0.5 seconds when parking brake is not operating	Approximately 0.5 seconds when parking brake is not operating
Trip Count		1 trip	1 trip	1 trip	1 trip

Tech Tips

If the conditions match either of these patterns, a DTC will be output.

DTC Detection Condition Combination Table: C13B0
		Vehicle Condition
		Pattern 1	Pattern 2
Diagnosis Condition	Electric parking brake switch assembly is operated to lock side with power switch off	○	-
Diagnosis Condition	Power switch on (IG)	-	○
Malfunction Status	Parking brake ECU assembly internal voltage malfunction or EEPROM malfunction	○	○
Detection Time		Approximately 0.5 seconds	Approximately 0.5 seconds
Trip Count		1 trip	1 trip

Tech Tips

If the conditions match either of these patterns, a DTC will be output.

CAUTION / NOTICE / HINT

Note

If the parking brake ECU assembly is replaced, perform the "Reset Memory" and "Acquire Tension Sensor Zero Point" procedures.

PROCEDURE

REPLACE PARKING BRAKE ECU ASSEMBLY

Replace parking brake ECU assembly.

Result

Proceed to
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END