RM3660EC _54 Brake _080740 PARKING BRAKE _0394663 ELECTRIC PARKING BRAKE SYSTEM(for HV Model) J

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


WIRING DIAGRAM

C402509E43
0.458,0.719 1.688,0.917 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. 2 2.833,1.563 3.302,1.771 0.469,0.208 10 false A144 5.135,1.313 7.01,1.792 1.875,0.479 10 false Combination Meter Assembly 2.833,1.74 4.385,2.448 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:

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


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 HV 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.CHECK VEHICLE SPECIFICATION

B

INSPECT REAR BRAKE

C

6.CHECK HARNESS AND CONNECTOR (+BS TERMINAL VOLTAGE)
3.CHECK VEHICLE SPECIFICATION
a.

Check the vehicle specification.


Result:
Result Proceed to
Combination Meter Assembly (except 12.3 Inch Display) A
Combination Meter Assembly (for 12.3 Inch Display) B



A

4.INSPECT COMBINATION METER ASSEMBLY

B

5.INSPECT COMBINATION METER ASSEMBLY
4.INSPECT COMBINATION METER ASSEMBLY
a.

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

Click hereVehicle Interior>METER / GAUGE / DISPLAY>METER / GAUGE SYSTEM (except 12.3 Inch Display)>DATA LIST / ACTIVE TEST

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 HV Model)>REMOVAL


NG

GO TO METER / GAUGE SYSTEM

Click hereVehicle Interior>METER / GAUGE / DISPLAY>METER / GAUGE SYSTEM (except 12.3 Inch Display)>HOW TO PROCEED WITH TROUBLESHOOTING


5.INSPECT COMBINATION METER ASSEMBLY
a.

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

Click hereVehicle Interior>METER / GAUGE / DISPLAY>METER / GAUGE SYSTEM (for 12.3 Inch Display)>DATA LIST / ACTIVE TEST

Body Electrical > Combination Meter > Active Test
Tester Display
Multi Display All (White)
50004 409 20

b.

Check the combination meter assembly.

OK:

The multi-information display in the combination meter assembly turns on according to the operation of the Active Test.



Result:
Proceed to
OK
NG



OK

REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) (BRAKE ACTUATOR ASSEMBLY)

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


NG

GO TO METER / GAUGE SYSTEM

Click hereVehicle Interior>METER / GAUGE / DISPLAY>METER / GAUGE SYSTEM (for 12.3 Inch Display)>HOW TO PROCEED WITH TROUBLESHOOTING


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

Turn the power switch off.


b.

Disconnect the A144 skid control ECU (brake actuator assembly) connector.


c.
C400975C65
1.5,0.708 1.917,0.958 0.417,0.25 0.333,2.583 0.448,1.823 true 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 1.542,0.75 1.99,0.958 0.448,0.208 10 false A144
*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
A144-30 (+BS) - Body ground Always 11 to 14 V



Result:
Proceed to
OK
NG



OK

7.CHECK HARNESS AND CONNECTOR (IGR TERMINAL VOLTAGE)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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

Turn the power switch off.


b.

Disconnect the A144 skid control ECU (brake actuator assembly) connector.


c.
C400975C66
1.51,0.406 1.979,0.656 0.469,0.25 1.104,1.104 1.427,1.656 true 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 1.583,0.448 2.021,0.688 0.438,0.24 10 false A144
*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
A144-36 (IGR) - Body ground Power switch on (IG) 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 HV Model)>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR