| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM100000001G6UP |
| Model Year Start: 2020 | Model: Corolla | Prod Date Range: [01/2019 - 09/2022] |
| Title: AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM (for HV Model with Dual Knob Type): Parking Brake Switch Circuit; 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022] | ||
|
Parking Brake Switch Circuit |
DESCRIPTION
This circuit is from the parking brake ECU (brake actuator assembly) to the radio and display receiver assembly.
WIRING DIAGRAM
PROCEDURE
|
1. |
CHECK PARKING BRAKE INDICATOR |
(a) Check that the parking brake indicator comes on when the parking brake is applied and goes off when it is released.
OK:
The parking brake indicator operates as specified above.
| NG |
|
|
|
2. |
CHECK HARNESS AND CONNECTOR (PARKING BRAKE ECU (BRAKE ACTUATOR ASSEMBLY) - RADIO AND DISPLAY RECEIVER ASSEMBLY) |
(a) Disconnect the I56 radio and display receiver assembly connector.
(b) Disconnect the A113 parking brake ECU (brake actuator assembly) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I56-20 (PKB) - A113-19 (PKB) |
Always |
Below 1 Ω |
|
I56-20 (PKB) or A113-19 (PKB) - Body ground |
Always |
10 kΩ or higher |
| OK |
|
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
|
![2020 MY Corolla Corolla HV [01/2019 - 04/2020]; AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM (for HV Model with Dual Knob Type): PROBLEM SYMPTOMS TABLE](/t3Portal/stylegraphics/info.gif)
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|