RM38T0EC _54 Brake _112607 PARKING BRAKE _0608079 ELECTRIC PARKING BRAKE SYSTEM(for HEV Model) C

PARKING BRAKE ELECTRIC PARKING BRAKE SYSTEM(for HEV Model) C060B12 Left Electric Parking Brake Actuator Control Circuit Short to Battery

DESCRIPTION

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Memory	Note
C060B12	Left Electric Parking Brake Actuator Control Circuit Short to Battery	· Diagnosis Condition: Electric parking brake not operating · Malfunction Status: The ECU power supply is normal but there is a malfunction in the electric parking brake actuator LH internal circuit (short to +B). · Detection Time: Approximately 0.015 to 0.195 seconds (depending on each malfunction)	· Parking brake actuator assembly LH · No. 2 parking brake wire assembly · Wire harness or connector · Skid control ECU (brake actuator assembly)	DTC stored	An electric parking brake system malfunction is displayed on the multi-information display.

WIRING DIAGRAM

Click hereBrake>PARKING BRAKE>ELECTRIC PARKING BRAKE SYSTEM (for HEV Model)>C060B00202307,999999,_54,_112607,_0608079,RM100000002C7G4_03,C060B00

CAUTION / NOTICE / HINT

NOTICE:: ·

The electric parking brake may still operate up to 4 minutes after the ignition switch is turned off. Before disconnecting connectors or fuses, turn the ignition switch off and wait 4 minutes or more.

·

After replacing the skid control ECU (brake actuator assembly), perform acceleration sensor zero point calibration and store system information memorization.

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·

When replacing the skid control ECU (brake actuator assembly), operate the electric parking brake switch (electric parking brake switch assembly) as the parking brake indicator light blinks (red) when the ignition switch is first turned ON.

PROCEDURE

1.CHECK FOR SHORT TO +B

Turn the ignition switch off.

Make sure the No. 2 parking brake wire assembly is securely installed.

Disconnect the n1 parking brake actuator assembly LH connector.

1.448,0.313 1.865,0.563 0.417,0.25 1.042,2.719 1.458,1.979 true 2.385,2.729 1.969,1.99 true 0.25,0.229 0.563,0.427 0.313,0.198 10 false *a 1.583,0.333 1.896,0.531 0.313,0.198 10 false n1 0.875,2.719 1.333,2.917 0.458,0.198 10 false MRL- 2.24,2.74 2.698,2.938 0.458,0.198 10 false MRL+

*a	Front view of No. 2 Parking Brake Wire Assembly (to Parking Brake Actuator Assembly LH)

Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection	Condition	Specified Condition
n1-2 (MRL+) - n1-1 (MRL-)	Electric parking brake not operating	Below 1 V

Result:

Proceed to
OK
NG

REPLACE PARKING BRAKE ACTUATOR ASSEMBLY LH

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2.CHECK FOR SHORT TO +B

Disconnect the nO3 No. 2 parking brake wire assembly connector.

1.479,0.375 1.938,0.708 0.458,0.333 0.208,0.281 0.51,0.51 0.302,0.229 10 false *a 1.594,0.458 1.896,0.688 0.302,0.229 10 false nO3

*a	Front view of wire harness connector (to No. 2 Parking Brake Wire Assembly)

Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection	Condition	Specified Condition
nO3-1 - nO3-2	Electric parking brake not operating	Below 1 V

Result:

Proceed to
OK
NG

REPLACE NO. 2 PARKING BRAKE WIRE ASSEMBLY

3.CHECK FOR SHORT TO +B

Disconnect the nO3 No. 2 parking brake wire assembly connector.

Disconnect the A151 skid control ECU (brake actuator assembly) connector.

Measure the voltage according to the value(s) in the table below.

1.667,0.417 2.083,0.667 0.417,0.25 5.125,0.417 5.542,0.667 0.417,0.25 3.104,2.177 2.604,1.677 true 1.896,2.177 2.396,1.677 true 1.719,0.448 2.177,0.646 0.458,0.198 10 false A151 5.208,0.469 5.667,0.667 0.458,0.198 10 false nO3 0.5,0.75 0.958,1.031 0.458,0.281 10 false *b 0.167,0.167 0.583,0.417 0.417,0.25 10 false *a 4.583,0.75 5.125,0.948 0.542,0.198 10 false *c 1.75,2.229 2.25,2.479 0.5,0.25 10 false MRL- 3,2.229 3.5,2.479 0.5,0.25 10 false MRL+

*a	Front view of wire harness connector	*b	(to Skid Control ECU (Brake Actuator Assembly))
*c	(to No. 2 Parking Brake Wire Assembly)	-	-

Standard Voltage:

Tester Connection	Condition	Specified Condition
nO3-1 or A151-13 (MRL+) - Body ground	Always	Below 1 V
nO3-2 or A151-12 (MRL-) - Body ground	Always	Below 1 V

Result:

Proceed to
OK
NG

REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)

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REPAIR OR REPLACE HARNESS OR CONNECTOR