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

PARKING BRAKE  ELECTRIC PARKING BRAKE SYSTEM(for Gasoline Model)  C060962  Electric Parking Brake Switch Signal Compare Failure  


DESCRIPTION

When the electric parking brake switch is pulled, a lock request signal is sent from the skid control ECU (brake actuator assembly) to the parking brake actuator assembly. When the electric parking brake switch is pushed, a release request signal is sent from the skid control ECU (brake actuator assembly) to the parking brake actuator assembly.

DTC No. Detection Item DTC Detection Condition Trouble Area Memory Note
C060962 Electric Parking Brake Switch Signal Compare Failure
for NR Series
·

Parking brake switch open or short circuit is detected for 1 seconds or more

·

Parking brake switch stuck malfunction


except NR Series
·

Open or short detected in parking brake switch circuit for 1 second or more

·

Stuck parking brake switch detected (when parked: 30 seconds, when driving: 1 second, during engine stall: 1 second)

·

Stuck parking brake switch detected 3 times in succession when being operated


·

Electric parking brake switch (electric parking brake switch assembly)

·

Wire harness or connector

·

Skid control ECU (brake actuator assembly)


DTC stored An electric parking brake system malfunction is displayed on the multi-information display.

DTC Detection Conditions: C060962 (for NR Series)
Vehicle Condition
Pattern 1 Pattern 2 Pattern 3
Diagnosis Condition - - - -
Malfunction Status Parking brake switch open circuit is detected ○ - -
Parking brake switch short circuit is detected - ○ -
Parking brake switch stuck malfunction - - ○
Detection Time 1 second or more 1 second or more -
Number of Trips 1 trip 1 trip 1 trip

HINT:

DTC will be output when conditions for either of the patterns in the table above are met.


DTC Detection Conditions: C060962 (except NR Series)
Vehicle Condition
Pattern 1 Pattern 2 Pattern 3 Pattern 4 Pattern 5 Pattern 6
Diagnosis Condition Vehicle is stopped - - ○ - - -
Vehicle is being driven - - - ○ - -
During initial check - - - - ○ -
Parking brake switch is being operated - - - - - ○
Malfunction Status Open detected in parking brake switch circuit ○ - - - - -
Short detected in parking brake switch circuit - ○ - - - -
Stuck parking brake switch detected - - ○ ○ ○ ○
Detection Time 1 second or more 1 second or more 30 seconds or more 1 second or more 1 second or more -
Number of Trips 1 trip 1 trip 1 trip 1 trip 1 trip 3 trip

HINT:

DTC will be output when conditions for either of the patterns in the table above are met.


WIRING DIAGRAM

for NR Series
C483986E23
1.354,3.167 3.76,3.615 2.406,0.448 10 false Electric Parking Brake Switch (Electric Parking Brake Switch Assembly) 5.167,3.688 6.719,4.083 1.552,0.396 10 false Skid Control ECU (Brake Actuator Assembly) 5.167,3.5 5.604,3.688 0.438,0.188 10 false A51 3.333,1.25 3.771,1.438 0.438,0.188 10 false SWI1 3.26,1.563 3.792,1.75 0.531,0.188 10 false SWO1 3.323,1.865 3.76,2.052 0.438,0.188 10 false SWI2 3.25,2.427 3.781,2.615 0.531,0.188 10 false SWO2 5.469,1.365 5.906,1.552 0.438,0.188 10 false SWI1 5.458,1.646 5.938,1.833 0.479,0.188 10 false SWO1 5.458,1.969 5.896,2.156 0.438,0.188 10 false SWI2 5.469,2.563 5.979,2.75 0.51,0.188 10 false SWO2 3.792,1.25 3.979,1.448 0.188,0.198 10 false 7 3.792,1.552 4.052,1.75 0.26,0.198 10 false 8 5.198,1.563 5.385,1.76 0.188,0.198 10 false 32 3.802,1.844 3.99,2.042 0.188,0.198 10 false 1 3.802,2.438 3.99,2.635 0.188,0.198 10 false 2 5.208,1.26 5.396,1.458 0.188,0.198 10 false 31 5.198,1.865 5.385,2.063 0.188,0.198 10 false 15 5.188,2.448 5.375,2.646 0.188,0.198 10 false 16 1.354,2.979 1.854,3.24 0.5,0.26 10 false I41


except NR Series: Click hereBrake>PARKING BRAKE>ELECTRIC PARKING BRAKE SYSTEM (for Gasoline Model)>C060913


CAUTION / NOTICE / HINT

NOTICE:

for NR Series:

If the electric parking brake switch is held near the lock position but not fully in the lock position for 1 second or more, a DTC may be stored due to one of the two contacts being ON while the other is OFF. (This is not a system malfunction.)


PROCEDURE

1.READ VALUE USING GTS (EPB SWITCH)
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
EPB Switch Electric parking brake switch (electric parking brake switch assembly) input Neutral / Apply / Release / Unknown Neutral: Lock switch and release switch are off
Apply: Lock switch on
Release: Release switch on 		When not normal, electric parking brake switch (electric parking brake switch assembly) release side system may be malfunctioning
HINT:

EPB stands for electric parking brake.


Chassis > Brake/EPB > Data List
Tester Display
EPB Switch
50003 435 142

d.

Operate the electric parking brake switch assembly and check that the value of "EPB Switch" in the Data List changes between Apply and Release in accordance with the operation of the switch.

OK:

The value of EPB Switch changes between Apply and Release in accordance with switch operation.



Result:
Proceed to
OK
NG



OK

2.CLEAR DTC

NG

4.INSPECT ELECTRIC PARKING BRAKE SWITCH (ELECTRIC PARKING BRAKE SWITCH ASSEMBLY)
2.CLEAR DTC
a.

Clear the DTCs.

Chassis > Brake/EPB > Clear DTCs
50002 435
Result:
Proceed to
NEXT




NEXT

3.CHECK DTC
3.CHECK DTC
a.

Check for DTCs.

Chassis > Brake/EPB > Trouble Codes
50001 435

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



A

REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)

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


B

USE SIMULATION METHOD TO CHECK

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


4.INSPECT ELECTRIC PARKING BRAKE SWITCH (ELECTRIC PARKING BRAKE SWITCH ASSEMBLY)
a.

Remove the electric parking brake switch (electric parking brake switch assembly).

Click hereBrake>PARKING BRAKE>ELECTRIC PARKING BRAKE SWITCH>REMOVAL


b.

Inspect the electric parking brake switch (electric parking brake switch assembly).

Click hereBrake>PARKING BRAKE>ELECTRIC PARKING BRAKE SWITCH>INSPECTION


Result:
Proceed to
OK
NG



OK

5.CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - ELECTRIC PARKING BRAKE SWITCH (ELECTRIC PARKING BRAKE SWITCH ASSEMBLY))

NG

REPLACE ELECTRIC PARKING BRAKE SWITCH (ELECTRIC PARKING BRAKE SWITCH ASSEMBLY)

Click hereBrake>PARKING BRAKE>ELECTRIC PARKING BRAKE SWITCH>REMOVAL


5.CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - ELECTRIC PARKING BRAKE SWITCH (ELECTRIC PARKING BRAKE SWITCH ASSEMBLY))
a.

Disconnect the I183 electric parking brake switch (electric parking brake switch assembly) connector. (except NR Series or M20C-FKS)


b.

Disconnect the I41 electric parking brake switch (electric parking brake switch assembly) connector. (for NR Series or M20C-FKS)


c.

Disconnect the A51 skid control ECU (brake actuator assembly) connector.


d.

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

Standard Resistance:
except NR Series or M20C-FKS
Tester Connection Condition Specified Condition
A51-31 (SWI1) - I183-7 (SWI1) Always Below 1 Ω
A51-32 (SWO1) - I183-8 (SWO1) Always Below 1 Ω
A51-15 (SWI2) - I183-1 (SWI2) Always Below 1 Ω
A51-16 (SWO2) - I183-2 (SWO2) Always Below 1 Ω
A51-31 (SWI1) or I183-7 (SWI1) - Body ground Always 10 kΩ or higher
A51-32 (SWO1) or I183-8 (SWO1) - Body ground Always 10 kΩ or higher
A51-15 (SWI2) or I183-1 (SWI2) - Body ground Always 10 kΩ or higher
A51-16 (SWO2) or I183-2 (SWO2) - Body ground Always 10 kΩ or higher

for NR Series or M20C-FKS
Tester Connection Condition Specified Condition
A51-31 (SWI1) - I41-7 (SWI1) Always Below 1 Ω
A51-32 (SWO1) - I41-8 (SWO1) Always Below 1 Ω
A51-15 (SWI2) - I41-1 (SWI2) Always Below 1 Ω
A51-16 (SWO2) - I41-2 (SWO2) Always Below 1 Ω
A51-31 (SWI1) or I41-7 (SWI1) - Body ground Always 10 kΩ or higher
A51-32 (SWO1) or I41-8 (SWO1) - Body ground Always 10 kΩ or higher
A51-15 (SWI2) or I41-1 (SWI2) - Body ground Always 10 kΩ or higher
A51-16 (SWO2) or I41-2 (SWO2) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

6.CLEAR DTC

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.CLEAR DTC
a.

Clear the DTCs.

Chassis > Brake/EPB > Clear DTCs
50002 435

b.

Turn the ignition switch off.


Result:
Proceed to
NEXT



NEXT

7.CHECK DTC
7.CHECK DTC
a.

Check for DTCs.

Chassis > Brake/EPB > Trouble Codes
50001 435

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



A

REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)

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


B

USE SIMULATION METHOD TO CHECK

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