DTC C13A8: Tension Sensor Malfunction [10/2020 - 10/2023]: Description

The tension sensor is built into the parking brake with bracket actuator assembly. It detects the tension value of the parking brake cable and outputs the value to the parking brake ECU assembly.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Memory	Note
C13A8	Tension Sensor Malfunction	Detection Condition 1: 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: Tension1 Voltage or Tension2 Voltage voltage is 4.5 V or more Malfunction Duration: Approximately 1 second Detection Condition 2: Diagnosis Condition: After performing tension sensor zero point calibration, electric parking brake switch assembly is operated to lock side with power switch off or power switch is turned on (IG) Malfunction Status: Tension1 Voltage or Tension2 Voltage voltage is below 0.463 V Malfunction Duration: Approximately 1 second Detection Condition 3: Diagnosis Condition: When performing tension sensor zero point calibration or power switch is turned on (IG) with parking brake forcibly released Malfunction Status: Tension1 Voltage or Tension2 Voltage voltage is below 0.2 V Malfunction Duration: Approximately 1 second Detection Condition 4: 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: The voltage of the tension sensor 1 zero point correction value or tension sensor 2 zero point correction value is abnormal Malfunction Duration: The malfunction status repeats 3 times	Parking brake with bracket actuator assembly Wire harness or connector Parking brake ECU assembly	Yes	An electric parking brake system malfunction is displayed on the multi-information display.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Memory

Note

C13A8

Tension Sensor Malfunction

Detection Condition 1:

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:
Tension1 Voltage or Tension2 Voltage voltage is 4.5 V or more
Malfunction Duration:
Approximately 1 second

Detection Condition 2:

Diagnosis Condition:
After performing tension sensor zero point calibration, electric parking brake switch assembly is operated to lock side with power switch off or power switch is turned on (IG)
Malfunction Status:
Tension1 Voltage or Tension2 Voltage voltage is below 0.463 V
Malfunction Duration:
Approximately 1 second

Detection Condition 3:

Diagnosis Condition:
When performing tension sensor zero point calibration or power switch is turned on (IG) with parking brake forcibly released
Malfunction Status:
Tension1 Voltage or Tension2 Voltage voltage is below 0.2 V
Malfunction Duration:
Approximately 1 second

Detection Condition 4:

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:
The voltage of the tension sensor 1 zero point correction value or tension sensor 2 zero point correction value is abnormal
Malfunction Duration:
The malfunction status repeats 3 times

Parking brake with bracket actuator assembly
Wire harness or connector
Parking brake ECU assembly

Yes

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

DTC DETECTION CONDITION COMBINATION TABLE: C13A8 (PATTERN 1, PATTERN 2, PATTERN 3, PATTERN 4, PATTERN 5, PATTERN 6)

		Vehicle Condition
		Pattern 1	Pattern 2	Pattern 3	Pattern 4	Pattern 5	Pattern 6
Diagnosis Condition	Electric parking brake switch assembly is operated to lock side with power switch off	◦	◦	-	-	◦	◦
	Power switch on (IG)	-	-	◦	◦	-	-
	After performing tension sensor zero point calibration	-	-	-	-	◦	◦
Malfunction Status	Tension1 Voltage voltage is 4.5 V or more	◦	-	◦	-	-	-
	Tension2 Voltage voltage is 4.5 V or more	-	◦	-	◦	-	-
	Tension1 Voltage voltage is below 0.463 V	-	-	-	-	◦	-
	Tension2 Voltage voltage is below 0.463 V	-	-	-	-	-	◦
Detection Time		Approximately 1 second	Approximately 1 second	Approximately 1 second	Approximately 1 second	Approximately 1 second	Approximately 1 second
Trip Count		1 trip	1 trip	1 trip	1 trip	1 trip	1 trip

DTC DETECTION CONDITION COMBINATION TABLE: C13A8 (PATTERN 7, PATTERN 8, PATTERN 9, PATTERN 10, PATTERN 11)

		Vehicle Condition
		Pattern 7	Pattern 8	Pattern 9	Pattern 10	Pattern 11
Diagnosis Condition	Power switch on (IG)	◦	◦	-	-	◦
	Tension sensor zero point calibration incomplete	-	-	◦	◦	-
	Parking brake is forcibly released	-	-	-	-	◦
Malfunction Status	Tension1 Voltage voltage is below 0.463 V	◦	-	-	-	-
	Tension2 Voltage voltage is below 0.463 V	-	◦	-	-	-
	Tension1 Voltage voltage is below 0.2 V	-	-	◦	-	◦
	Tension2 Voltage voltage is below 0.2 V	-	-	-	◦	-
Detection Time		Approximately 1 second	Approximately 1 second	Approximately 1 second	Approximately 1 second	Approximately 1 second
Trip Count		1 trip	1 trip	1 trip	1 trip	1 trip

DTC DETECTION CONDITION COMBINATION TABLE: C13A8 (PATTERN 12, PATTERN 13, PATTERN 14, PATTERN 15, PATTERN 16)

		Vehicle Condition
		Pattern 12	Pattern 13	Pattern 14	Pattern 15	Pattern 16
Diagnosis Condition	Electric parking brake switch assembly is operated to lock side with power switch off	-	◦	◦	-	-
	Power switch on (IG)	◦	-	-	◦	◦
	Parking brake is forcibly released	◦	-	-	-	-
Malfunction Status	Tension2 Voltage voltage is below 0.2 V	◦	-	-	-	-
	The voltage of the tension sensor 1 zero point correction value is abnormal	-	◦	-	◦	-
	The voltage of the tension sensor 2 zero point correction value is abnormal	-	-	◦	-	◦
Detection Time		Approximately 1 second	Repeats 3 times	Repeats 3 times	Repeats 3 times	Repeats 3 times
Trip Count		1 trip	1 trip	1 trip	1 trip	1 trip

HINT:

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