RM3660EC _54 Brake _080740 PARKING BRAKE _0394664 ELECTRIC PARKING BRAKE SYSTEM(for Gasoline Model) J

PARKING BRAKE  ELECTRIC PARKING BRAKE SYSTEM(for Gasoline Model)  Brake Warning Light (Yellow) Remains On  


DESCRIPTION

This procedure is for troubleshooting when the brake warning light (yellow) remains on but no DTCs are output.

The skid control ECU (brake actuator assembly) controls the brake warning light (yellow) in the combination meter assembly via CAN communication.

PROCEDURE

1.CHECK VEHICLE CONTROL HISTORY (ELECTRIC PARKING BRAKE SYSTEM)
a.

Using the GTS, check for Vehicle Control History.

Chassis > Brake/EPB > Utility
Tester Display
Vehicle Control History (RoB)
50005 435 55
HINT:

If vehicle control history is stored when the electric parking brake system is suspended, the brake warning light (yellow) illuminates.



Result:
Result Proceed to
There is no vehicle control history for when the electric parking brake system was suspended. A
There is vehicle control history for when the electric parking brake system was suspended. B



A

2.CHECK VEHICLE SPECIFICATION

B

ERFORM TROUBLESHOOTING AND REPAIR REGARDING VEHICLE CONTROL HISTORY

except NR Series: Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model (except NR Series))>VEHICLE CONTROL HISTORY (RoB)

for NR Series: Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model (NR Series))>VEHICLE CONTROL HISTORY

NOTICE:

After performing troubleshooting and repair regarding vehicle control history, clear the vehicle control history.



2.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

3.INSPECT COMBINATION METER ASSEMBLY (BRAKE WARNING LIGHT (YELLOW))

B

4.INSPECT COMBINATION METER ASSEMBLY
3.INSPECT COMBINATION METER ASSEMBLY (BRAKE WARNING LIGHT (YELLOW))
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Enter the following menus: Body Electrical / Combination Meter / Active Test.


d.

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
ECB Warning
50004 409 110

e.

Check the combination meter assembly.

OK:

The brake warning light (yellow) 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 Gasoline Model)>REMOVAL


NG

INSPECT METER / GAUGE SYSTEM

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


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 (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 Gasoline Model)>REMOVAL


NG

INSPECT METER / GAUGE SYSTEM

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