RM36D0EC _54 Brake _083081 PARKING BRAKE _0401025 ELECTRIC PARKING BRAKE SYSTEM(for Gasoline Model) J

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


WIRING DIAGRAM

C420840E02
0.594,1.01 1.406,1.177 0.813,0.167 10 false ABS NO. 2 2.667,0.708 2.979,0.906 0.313,0.198 10 false 30 2.646,1.417 2.958,1.615 0.313,0.198 10 false 36 2.938,0.823 3.333,1.021 0.396,0.198 10 false +BS 2.969,1.542 3.313,1.719 0.344,0.177 10 false IGR 1.146,1.427 1.333,1.615 0.188,0.188 10 false 1 0.76,1.51 1.104,1.688 0.344,0.177 10 false IG31 0.604,1.875 0.948,2.052 0.344,0.177 10 false A32 0.604,2.052 2.406,2.271 1.802,0.219 10 false Engine Stop and Start ECU 2.979,1.896 3.323,2.073 0.344,0.177 10 false A39 2.979,2.063 4.573,2.615 1.594,0.552 10 false Skid Control ECU (Brake Actuator Assembly) 5.25,1.615 7.125,1.906 1.875,0.292 10 false Combination meter Assembly 0.5,2.49 2.302,2.708 1.802,0.219 10 false : CAN Communication Line

CAUTION / NOTICE / HINT

NOTICE:
·

The electric parking brake may still operate up to 20 seconds after the ignition switch is turned off. Before disconnecting connectors or fuses, turn the ignition switch off and wait 20 seconds 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 Gasoline Model)>UTILITY

·

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



HINT:

Even if the electric parking brake is operating normally, the parking brake indicator light 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

for GTMC Made: Click herePower Source / Network>NETWORKING>CAN COMMUNICATION SYSTEM (for GTMC Made Gasoline Model)>HOW TO PROCEED WITH TROUBLESHOOTING

for SFTM Made: Click herePower Source / Network>NETWORKING>CAN COMMUNICATION SYSTEM (for SFTM Made Gasoline 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 A
Lock and release operation is malfunctioning and parking brake indicator light illuminates or turns off according to switch operation B
Lock and release operation is malfunctioning and parking brake indicator light turns off or blinks 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 turns on or off in accordance with the 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 Gasoline Model)>REMOVAL


NG

GO TO METER / GAUGE SYSTEM

for GTMC Made: Click hereVehicle Interior>METER / GAUGE / DISPLAY>METER / GAUGE SYSTEM (for GTMC Made)>HOW TO PROCEED WITH TROUBLESHOOTING

for SFTM Made: Click hereVehicle Interior>METER / GAUGE / DISPLAY>METER / GAUGE SYSTEM (for SFTM Made)>HOW TO PROCEED WITH TROUBLESHOOTING


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

Turn the ignition switch off.


b.
C400975C10
1.5,0.667 1.917,0.917 0.417,0.25 0.333,2.583 0.448,1.823 true 1.573,0.719 2.031,0.917 0.458,0.198 10 false A39 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))


Disconnect the A39 skid control ECU (brake actuator assembly) connector.


c.

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

Standard Voltage:
Tester Connection Condition Specified Condition
A39-30 (+BS) - Body ground Ignition switch off 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.
C400975C74
1.5,0.667 1.917,0.917 0.417,0.25 1.104,1.104 1.427,1.656 true 1.573,0.719 2.031,0.917 0.458,0.198 10 false A39 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))


Disconnect the A39 skid control ECU (brake actuator assembly) connector.


c.

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

Standard Voltage:
Tester Connection Condition Specified Condition
A39-36 (IGR) - Body ground Ignition switch ON 10.5 to 16 V



Result:
Proceed to
OK
NG



OK

REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)

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


NG

6.CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - ENGINE STOP AND START ECU)
6.CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - ENGINE STOP AND START ECU)
a.

Turn the ignition switch off.


b.

Disconnect the A39 skid control ECU (brake actuator assembly) connector.


c.

Disconnect the A32 engine stop and start ECU connector.


d.

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

Standard Resistance:
Tester Connection Condition Specified Condition
A39-36 (IGR) - A32-1 (IG31) Always Below 1 Ω
A39-36 (IGR) or A32-1 (IG31) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

GO TO STOP AND START SYSTEM

Click hereEngine / Hybrid System>STOP AND START>STOP AND START SYSTEM>Backup Boost Converter Circuit


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR