| Last Modified: 08-21-2023 | 6.11:8.1.0 | Doc ID: RM100000001AWI0 |
| Model Year Start: 2019 | Model: Avalon | Prod Date Range: [04/2018 - 08/2021] |
| Title: PARKING BRAKE: ELECTRIC PARKING BRAKE SYSTEM (for Gasoline Model): C13A6; Open or Short Circuit in Motor; 2019 - 2021 MY Avalon [04/2018 - 08/2021] | ||
|
DTC |
C13A6 |
Open or Short Circuit in Motor |
DESCRIPTION
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Memory |
Note |
|---|---|---|---|---|---|
|
C13A6 |
Open or Short Circuit in Motor |
Parking brake actuator assembly open or short circuit is detected for 0.015 seconds or more. |
|
DTC stored |
An electric parking brake system malfunction is displayed on the multi-information display. |
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- The electric parking brake may still operate up to 20 seconds after the engine switch is turned off. Before disconnecting connectors or fuses, turn the engine switch off and wait 20 seconds or more.
- When replacing the skid control ECU (brake actuator assembly), operate the electric parking brake switch (electric parking brake switch assembly) as the parking brake indicator light blinks (red) when the engine switch is first turned on (IG).
PROCEDURE
|
1. |
READ VALUE USING TECHSTREAM (PERMISSION OF RH INTERLOCKING PKB LOCK / PERMISSION OF LH INTERLOCKING PKB LOCK) |
(a) Turn the engine switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the engine switch on (IG).
(d) Turn the Techstream on.
(e) Enter the following menus: Chassis / ABS/VSC/TRAC/EPB / Data List.
(f) Read the Data List according to the display on the Techstream.
Chassis > ABS/VSC/TRAC/EPB > Data List
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Permission of RH Interlocking PKB Lock |
Parking brake actuator assembly RH parking brake lock control permission status |
OK or NG |
OK |
- |
|
Permission of LH Interlocking PKB Lock |
Parking brake actuator assembly LH parking brake lock control permission status |
OK or NG |
OK |
- |
Chassis > ABS/VSC/TRAC/EPB > Data List
|
Tester Display |
|---|
|
Permission of RH Interlocking PKB Lock |
|
Permission of LH Interlocking PKB Lock |
|
|
2. |
INSPECT PARKING BRAKE WIRE ASSEMBLY |
|
*A |
RH |
*B |
LH |
|
*a |
Front view of Parking Brake Wire Assembly |
*b |
(to wire harness connector) |
|
*c |
(to Parking Brake Actuator Assembly) |
- |
- |
(a) Turn the engine switch off.
(b) Make sure that there is no looseness at the locking part and the connecting part of the connectors.
OK:
The connector is securely connected.
(c) Remove the parking brake wire assembly.
(d) Check both the connector case and the terminals for deformation and corrosion.
OK:
No deformation or corrosion.
(e) Inspect the parking brake wire assembly.
Standard Resistance:
RH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
YK1-1 (MRR-) - Y4-1 (RE-) |
Always |
Below 1 Ω |
|
YK1-1 (MRR-) or Y4-1 (RE-) - Body ground and other terminals |
Always |
10 kΩ or higher |
|
YK1-2 (MRR+) - Y4-2 (RE+) |
Always |
Below 1 Ω |
|
YK1-2 (MRR+) or Y4-2 (RE+) - Body ground and other terminals |
Always |
10 kΩ or higher |
LH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
YK2-1 (MRL-) - Y1-1 (LE-) |
Always |
Below 1 Ω |
|
YK2-1 (MRL-) or Y1-1 (LE-) - Body ground and other terminals |
Always |
10 kΩ or higher |
|
YK2-2 (MRL+) - Y1-2 (LE+) |
Always |
Below 1 Ω |
|
YK2-2 (MRL+) or Y1-2 (LE+) - Body ground and other terminals |
Always |
10 kΩ or higher |
| NG |
|
REPLACE PARKING BRAKE WIRE ASSEMBLY |
|
|
3. |
CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - PARKING BRAKE ACTUATOR ASSEMBLY) |
(a) Turn the engine switch off.
(b) Make sure the parking brake wire assembly is securely installed.
(c) Disconnect the A28 skid control ECU (brake actuator assembly) connector.
(d) Disconnect the Y4 or Y1 parking brake actuator assembly connector.
(e) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
RH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A28-2 (MRR+) - Y4-2 (RE+) |
Always |
Below 1 Ω |
|
A28-3 (MRR-) - Y4-1 (RE-) |
Always |
Below 1 Ω |
|
A28-2 (MRR+) or Y4-2 (RE+) - Body ground |
Always |
10 kΩ or higher |
|
A28-2 (MRR+) or Y4-1 (RE-) - Body ground |
Always |
10 kΩ or higher |
LH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A28-13 (MRL+) - Y1-2 (LE+) |
Always |
Below 1 Ω |
|
A28-12 (MRL-) - Y1-1 (LE-) |
Always |
Below 1 Ω |
|
A28-13 (MRL+) or Y1-2 (LE+) - Body ground |
Always |
10 kΩ or higher |
|
A28-12 (MRL-) or Y1-1 (LE-) - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
4. |
INSPECT PARKING BRAKE ACTUATOR ASSEMBLY |
(a) Remove the parking brake actuator assembly.
Click here
![2019 - 2022 MY Avalon Avalon HV [04/2018 - ]; PARKING BRAKE: ELECTRIC PARKING BRAKE ACTUATOR: REMOVAL](/t3Portal/stylegraphics/info.gif)
(b) Inspect the parking brake actuator assembly.
Click here
| OK |
|
REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)
|
| NG |
|
|
|