RM36D0EC _54 Brake _083077 BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS _0402316 ELECTRONICALLY CONTROLLED BRAKE SYSTEM(for Gasoline Model) J

BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS  ELECTRONICALLY CONTROLLED BRAKE SYSTEM(for Gasoline Model)  Brake Hold Standby Indicator Light Circuit  


DESCRIPTION

The brake hold standby indicator light turns on if brake hold control is possible when the following conditions required for operation standby are met and the brake hold switch (integration control and panel assembly) is pressed while the ignition switch ON.

Conditions required for operation standby:

(a)

The driver door is closed.

(b)

The driver seat belt is fastened.

(c)

The system is normal.



HINT:

If a malfunction occurs in one of the following systems, the brake hold operated indicator light will blink. If this occurs, perform troubleshooting on the malfunctioning system.

·

Brake system

·

Electric parking brake system



WIRING DIAGRAM

Except 12.3 Inch TFT Display Type:
C408618E09
0.854,0.854 1.469,1.052 0.615,0.198 10 false CANL 0.823,1.427 1.438,1.625 0.615,0.198 10 false CANH 0.115,2.01 0.729,2.208 0.615,0.198 10 false G18 0.115,2.167 2.042,2.448 1.927,0.281 10 false Combination Meter Assembly 1.313,0.677 1.625,0.875 0.313,0.198 10 false 25 1.313,1.26 1.625,1.458 0.313,0.198 10 false 9 5.271,0.677 5.583,0.875 0.313,0.198 10 false 19 5.333,1.26 5.646,1.458 0.313,0.198 10 false 5 3.896,2.521 4.26,2.74 0.365,0.219 10 false 24 3.615,2.771 4.031,3.021 0.417,0.25 10 false +B 3.01,2.771 3.458,3.031 0.448,0.26 10 false E 2.74,2.51 3.125,2.76 0.385,0.25 10 false 15 5.271,2.552 5.583,2.75 0.313,0.198 10 false 42 5.531,0.865 6.146,1.063 0.615,0.198 10 false CANL 5.552,1.438 6.167,1.635 0.615,0.198 10 false CANH 5.521,2.76 6.083,3.01 0.563,0.25 10 false HZRI 1.583,2.948 2.146,3.115 0.563,0.167 10 false G32 1.573,3.115 5.375,3.365 3.802,0.25 10 false Brake Hold Switch (Integration Control and Panel Assembly) 0.604,4.333 2.698,4.594 2.094,0.26 10 false : CAN Communication Line 6.604,2.656 6.917,2.844 0.313,0.188 10 false IC 5.51,3.552 6.125,3.75 0.615,0.198 10 false A39 5.5,3.74 7.052,4.125 1.552,0.385 10 false Skid Control ECU (Brake Actuator Assembly)

for 12.3 Inch TFT Display Type:
C408618E10
0.854,0.854 1.469,1.052 0.615,0.198 10 false CANL 0.823,1.427 1.438,1.625 0.615,0.198 10 false CANH 0.115,2.01 0.729,2.208 0.615,0.198 10 false G150 0.115,2.167 2.042,2.448 1.927,0.281 10 false Combination Meter Assembly 1.313,0.677 1.625,0.875 0.313,0.198 10 false 14 1.313,1.26 1.625,1.458 0.313,0.198 10 false 31 5.271,0.677 5.583,0.875 0.313,0.198 10 false 19 5.333,1.26 5.646,1.458 0.313,0.198 10 false 5 3.896,2.521 4.26,2.74 0.365,0.219 10 false 24 3.615,2.771 4.031,3.021 0.417,0.25 10 false +B 3.01,2.771 3.458,3.031 0.448,0.26 10 false E 2.74,2.51 3.125,2.76 0.385,0.25 10 false 15 5.271,2.552 5.583,2.75 0.313,0.198 10 false 42 5.531,0.865 6.146,1.063 0.615,0.198 10 false CANL 5.552,1.438 6.167,1.635 0.615,0.198 10 false CANH 5.521,2.76 6.083,3.01 0.563,0.25 10 false HZRI 1.583,2.948 2.146,3.115 0.563,0.167 10 false G32 1.573,3.115 5.375,3.365 3.802,0.25 10 false Brake Hold Switch (Integration Control and Panel Assembly) 0.604,4.333 2.698,4.594 2.094,0.26 10 false : CAN Communication Line 6.604,2.656 6.917,2.844 0.313,0.188 10 false IC 5.51,3.552 6.125,3.75 0.615,0.198 10 false A39 5.5,3.74 7.052,4.125 1.552,0.385 10 false Skid Control ECU (Brake Actuator Assembly)

CAUTION / NOTICE / HINT

NOTICE:

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


PROCEDURE

1.PRE-CHECK
a.

If the brake hold standby indicator light does not illuminate even though the brake hold switch (integration control and panel assembly) is pushed, check that the brake hold function operation conditions are met.

1.

The driver door is closed.

2.

The driver seat belt is fastened.

3.

The system is normal.


HINT:

If a malfunction occurs in one of the following systems, the brake hold operated indicator light will blink. If this occurs, perform troubleshooting on the malfunctioning system.

·

Brake system

·

Electric parking brake system




Result:
Proceed to
NEXT



NEXT

2.READ VALUE USING GTS (BRAKE HOLD READY)
2.READ VALUE USING GTS (BRAKE HOLD READY)
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Enter the following menus: Chassis / Brake/EPB / Data List.

Chassis > Brake/EPB > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
Brake Hold Ready Brake hold control permission status Not in stand-by mode / Stand-by mode Not in stand-by mode: Brake hold function not operating (brake hold indicator not illuminated)
Stand-by mode: Brake hold function stand-by state (brake hold indicator illuminated) 		-
Chassis > Brake/EPB > Data List
Tester Display
Brake Hold Ready
50003 435 164

d.

All of the following brake hold operation conditions are met:

1.

The driver door is closed.

2.

The driver seat belt is fastened.



e.

Check the brake hold standby indicator light and mode condition on the GTS changes according to brake hold switch (integration control and panel assembly) operation.

Standard:
Brake Hold Switch (Integration Control and Panel Assembly) Operation Mode Condition Display Brake Hold Standby Indicator Light
Not pressed Not in stand-by mode Does not come on
Pressing the brake hold switch (integration control and panel assembly) Stand-by mode Come on



Result:
Result Proceed to
Indicator light and mode condition display do not change A
Mode condition display is normal, but indicator light does not change B
Indicator light and mode condition display are normal C



A

3.INSPECT INTEGRATION CONTROL AND PANEL ASSEMBLY

B

INSPECT METER / GAUGE SYSTEM

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

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


C

USE SIMULATION METHOD TO CHECK

Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING


3.INSPECT INTEGRATION CONTROL AND PANEL ASSEMBLY
a.

Inspect the brake hold switch (integration control and panel assembly).

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>BRAKE HOLD SWITCH>INSPECTION


Result:
Proceed to
OK
NG



OK

4.CHECK HARNESS AND CONNECTOR (INTEGRATION CONTROL AND PANEL ASSEMBLY - BRAKE ACTUATOR ASSEMBLY)

NG

REPLACE INTEGRATION CONTROL AND PANEL ASSEMBLY

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>BRAKE HOLD SWITCH>REMOVAL


4.CHECK HARNESS AND CONNECTOR (INTEGRATION CONTROL AND PANEL ASSEMBLY - BRAKE ACTUATOR ASSEMBLY)
a.

Make sure that there is no looseness at the locking part and the connecting part of the connector.

OK:

The connector is securely connected.



b.

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


c.

Disconnect the G32 brake hold switch (integration control and panel assembly) connector.


d.

Check both the connector case and the terminal for deformation and corrosion.

OK:

No deformation or corrosion.



e.

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

Standard Resistance:
Tester Connection Condition Specified Condition
G32-24 (+B) - A39-42 (HZRI) Always Below 1 Ω
G32-24 (+B) or A39-42 (HZRI) - Body ground Always 10 kΩ or higher
G32-15 (E) - Body ground Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

REPLACE BRAKE ACTUATOR ASSEMBLY

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


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR