| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM1000000018F8S |
| Model Year Start: 2018 | Model: Sienna | Prod Date Range: [11/2017 - ] |
| Title: AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: Parking Brake Switch Circuit; 2018 - 2020 MY Sienna [11/2017 - ] | ||
|
Parking Brake Switch Circuit |
DESCRIPTION
This circuit is from the parking brake switch assembly to the radio and display receiver assembly.
WIRING DIAGRAM
PROCEDURE
|
1. |
CHECK PARKING BRAKE SWITCH ASSEMBLY |
|
(a) Enter the "Vehicle Signal Check Mode" screen. [Refer to Check Vehicle Signal Check Mode in Operation Check (See page
|
|
(b) Check that the display changes between ON and OFF according to the parking brake operation.
HINT:
This display is updated once per second. As a result, it is normal for the display to lag behind the actual parking brake operation.
OK:
|
Parking Brake Condition |
Display |
|---|---|
|
Applied |
ON |
|
Released |
OFF |
| OK |
|
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (See page
|
|
|
2. |
CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - PARKING BRAKE SWITCH ASSEMBLY) |
(a) Disconnect the D196 radio and display receiver assembly connector.
(b) Disconnect the A3 parking brake switch assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
D196-20 (PKB) - A3-1 |
Always |
Below 1 Ω |
|
D196-20 (PKB) - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
3. |
INSPECT PARKING BRAKE SWITCH ASSEMBLY |
(a) Remove the parking brake switch assembly (See page
![2016 - 2020 MY Sienna [12/2015 - ]; PARKING BRAKE: PARKING BRAKE SWITCH: REMOVAL](/t3Portal/stylegraphics/info.gif)
).
(b) Inspect the parking brake switch assembly (See page
).
| OK |
|
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (See page
|
| NG |
|
|
|