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

PARKING BRAKE  ELECTRIC PARKING BRAKE SYSTEM(for HEV Model)  Electric Parking Brake does not Operate  


WIRING DIAGRAM

C402509E38
0.469,0.719 1.698,0.917 1.229,0.198 10 false ABS NO. 2 0.354,1.313 1.583,1.51 1.229,0.198 10 false ECU-IGR NO. 4 2.833,1.552 3.25,1.771 0.417,0.219 10 false A151 5.135,1.313 7.01,1.792 1.875,0.479 10 false Combination Meter Assembly 2.833,1.698 4.385,2.406 1.552,0.708 10 false Skid Control ECU (Brake Actuator Assembly) 2.802,0.542 4.031,0.74 1.229,0.198 10 false +BS 2.813,1.146 4.042,1.344 1.229,0.198 10 false IGR 2.552,0.458 2.927,0.677 0.375,0.219 10 false 30 2.552,1.052 2.927,1.271 0.375,0.219 10 false 36 0.917,3.219 3.344,3.719 2.427,0.5 10 false : CAN Communication Line

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.

·

Inspect the fuses for circuits related to this system before performing the following procedure.

·

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

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HEV Model)>UTILITY

·

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



HINT:

Even if the electric parking brake is operating normally, the parking brake indicator light (red) on the combination meter may be malfunctioning.


PROCEDURE

1.CHECK CAN COMMUNICATION SYSTEM
a.

Check if CAN communication system DTCs are output.

Chassis > Brake/EPB > Trouble Codes
50001 435

Result:
Result Proceed to
DTCs are not output A
DTCs are output B



A

2.VEHICLE OPERATION CHECK

B

GO TO CAN COMMUNICATION SYSTEM

Click herePower Source / Network>NETWORKING>CAN COMMUNICATION SYSTEM (for HEV Model)>HOW TO PROCEED WITH TROUBLESHOOTING


2.VEHICLE OPERATION CHECK
a.

With the wheels not contacting the ground, check the condition of the rear wheels when the electric parking brake is operating and not operating.

Click hereBrake>PARKING BRAKE>ELECTRIC PARKING BRAKE ACTUATOR>ON-VEHICLE INSPECTION


Result:
Result Proceed to
Lock and release operation is normal and parking brake indicator light turns off or blinks (red) A
Lock and release operation is malfunctioning and parking brake indicator light illuminates (red) or turns off according to switch operation B
Lock and release operation is malfunctioning and parking brake indicator light turns off or blinks (red) C



A

3.INSPECT COMBINATION METER ASSEMBLY

B

INSPECT REAR BRAKE

C

4.CHECK HARNESS AND CONNECTOR (+BS TERMINAL VOLTAGE)
3.INSPECT COMBINATION METER ASSEMBLY
a.

Perform the Active Test of the combination meter assembly using the GTS.

Body Electrical > Combination Meter > Active Test
Tester Display
Park Warning
50004 409 108

b.

Check the combination meter assembly.

OK:

Parking brake indicator light (red) turns on or off in accordance with GTS operation.



Result:
Proceed to
OK
NG



OK

REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>BRAKE ACTUATOR (for HEV Model)>REMOVAL


NG

GO TO METER / GAUGE SYSTEM

Click hereVehicle Interior>METER / GAUGE / DISPLAY>METER / GAUGE SYSTEM>HOW TO PROCEED WITH TROUBLESHOOTING


4.CHECK HARNESS AND CONNECTOR (+BS TERMINAL VOLTAGE)
a.

Turn the ignition switch off.


b.

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


c.
C400975C57
1.5,0.667 1.917,0.917 0.417,0.25 0.333,2.583 0.448,1.823 true 1.552,0.698 2.01,0.896 0.458,0.198 10 false A151 0.167,0.167 0.646,0.521 0.479,0.354 10 false *a 0.198,2.604 0.656,2.802 0.458,0.198 10 false +BS
*a Front view of wire harness connector
(to Skid Control ECU (Brake Actuator Assembly))


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

Standard Voltage:
Tester Connection Condition Specified Condition
A151-30 (+BS) - Body ground Always 11 to 14 V



Result:
Proceed to
OK
NG



OK

5.CHECK HARNESS AND CONNECTOR (IGR TERMINAL VOLTAGE)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.CHECK HARNESS AND CONNECTOR (IGR TERMINAL VOLTAGE)
a.

Turn the ignition switch off.


b.

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


c.
C400975C58
1.5,0.667 1.917,0.917 0.417,0.25 1.104,1.104 1.427,1.656 true 1.552,0.698 2.01,0.896 0.458,0.198 10 false A151 0.167,0.167 0.646,0.521 0.479,0.354 10 false *a 0.938,0.938 1.396,1.135 0.458,0.198 10 false IGR
*a Front view of wire harness connector
(to Skid Control ECU (Brake Actuator Assembly))


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

Standard Voltage:
Tester Connection Condition Specified Condition
A151-36 (IGR) - Body ground Ignition switch ON 11 to 14 V



Result:
Proceed to
OK
NG



OK

REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>BRAKE ACTUATOR (for HEV Model)>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR