DTC C1120-14: Electric Parking Brake Tension Sensor "A" Circuit Short to Ground or Open [11/2020 - ]: Description

The tension sensor is built into the parking brake actuator assembly with bracket. It detects the tension value of the parking brake cable and outputs the value to the No. 2 skid control ECU (brake actuator assembly).

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Memory	DTC Output from	Priority	Note
C1120-14	Electric Parking Brake Tension Sensor "A" Circuit Short to Ground or Open	Detection Condition 1: Diagnosis Condition: After performing tension sensor zero point calibration, electric parking brake switch assembly is operated to lock side with ignition switch off or ignition switch ON Malfunction Status: Tension1 Voltage voltage is below 0.35 V Malfunction Duration: Approximately 1 second Detection Condition 2: Diagnosis Condition: When performing tension sensor zero point calibration or ignition switch ON with parking brake forcibly released Malfunction Status: Tension1 Voltage voltage is below 0.2 V Malfunction Duration: Approximately 1 second	Parking brake actuator assembly with bracket Wire harness or connector No. 2 skid control ECU (brake actuator assembly)	DTC stored	Brake/EPB	B	An electric parking brake system malfunction is displayed on the multi-information display.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Memory

DTC Output from

Priority

Note

C1120-14

Electric Parking Brake Tension Sensor "A" Circuit Short to Ground or Open

Detection Condition 1:

Diagnosis Condition:
After performing tension sensor zero point calibration, electric parking brake switch assembly is operated to lock side with ignition switch off or ignition switch ON
Malfunction Status:
Tension1 Voltage voltage is below 0.35 V
Malfunction Duration:
Approximately 1 second

Detection Condition 2:

Diagnosis Condition:
When performing tension sensor zero point calibration or ignition switch ON with parking brake forcibly released
Malfunction Status:
Tension1 Voltage voltage is below 0.2 V
Malfunction Duration:
Approximately 1 second

Parking brake actuator assembly with bracket
Wire harness or connector
No. 2 skid control ECU (brake actuator assembly)

DTC stored

Brake/EPB

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

DTC DETECTION CONDITIONS

		Vehicle Condition
		Pattern 1	Pattern 2	Pattern 3	Pattern 4
Diagnosis Condition	After performing tension sensor zero point calibration, electric parking brake switch assembly is operated to lock side with ignition switch off	◦	-	-	-
	Ignition switch ON	-	◦	◦	◦
	When performing tension sensor zero point calibration	-	-	◦	-
	Parking brake forcibly released	-	-	-	◦
Malfunction Status	Tension1 Voltage voltage is below 0.35 V	◦	◦	-	-
Malfunction Status	Tension1 Voltage voltage is below 0.2 V	-	-	◦	◦
Detection Time		Approximately 1 second	Approximately 1 second	Approximately 1 second	Approximately 1 second
Number of Trips		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.