| Last Modified: 08-21-2023 | 6.11:8.1.0 | Doc ID: RM100000001XOFC |
| Model Year Start: 2022 | Model: Avalon HV | Prod Date Range: [08/2021 - ] |
| Title: PARKING BRAKE: ELECTRIC PARKING BRAKE SYSTEM (for HV Model): Electric Parking Brake does not Operate; 2022 MY Avalon HV [08/2021 - ] | ||
|
Electric Parking Brake does not Operate |
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following procedure.
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 > Electric Parking Brake > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
DTCs are not output |
A |
|
DTCs are output |
B |
| B |
|
|
|
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.
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![2022 MY Avalon Avalon HV [08/2021 - ]; PARKING BRAKE: ELECTRIC PARKING BRAKE ACTUATOR: ON-VEHICLE INSPECTION](/t3Portal/stylegraphics/info.gif)
|
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 |
| B |
|
INSPECT REAR BRAKE |
| C |
|
|
|
3. |
INSPECT COMBINATION METER ASSEMBLY |
(a) Perform the Active Test of the combination meter assembly using the Techstream.
Body Electrical > Combination Meter > Active Test
|
Tester Display |
|---|
|
Park Warning |
(b) Check the combination meter assembly.
OK:
Parking brake indicator light turns on or off in accordance with Techstream operation.
| OK |
|
| NG |
|
|
4. |
CHECK HARNESS AND CONNECTOR (BEPB TERMINAL VOLTAGE) |
(a) Turn the power switch off.
(b) Disconnect the A39 parking brake 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 |
|---|---|---|
|
A39-9 (BEPB) - Body ground |
Always |
11 to 14 V |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
5. |
CHECK HARNESS AND CONNECTOR (IG TERMINAL VOLTAGE) |
(a) Turn the power switch off.
(b) Disconnect the A39 parking brake 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 |
|---|---|---|
|
A39-26 (IG) - Body ground |
Power switch on (IG) |
11 to 14 V |
| OK |
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|