| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM100000000VJTJ |
| Model Year Start: 2016 | Model: Sienna | Prod Date Range: [12/2015 - 11/2017] |
| Title: PRE-COLLISION: PRE-COLLISION SYSTEM: Pre-Collision Brake Cancel Switch Circuit; 2016 - 2017 MY Sienna [12/2015 - 11/2017] | ||
|
Pre-Collision Brake Cancel Switch Circuit |
DESCRIPTION
The driving support ECU receives pre-collision brake on/off signal from pre-collision system cancel switch.
WIRING DIAGRAM
PROCEDURE
|
1. |
READ VALUE USING TECHSTREAM (PRE-COLLISION BRAKE CANCEL SWITCH) |
(a) Use the Data List to check if the pre-collision brake cancel switch is functioning properly.
Pre-Collision 2
|
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
Pre-Collision Brake OFF Switch |
Pre-collision system cancel switch status/ON or OFF |
ON: Pre-collision brake cancel switch on OFF: Pre-collision brake cancel switch off |
- |
OK:
On screen, each item changes between ON and OFF according to above chart.
| OK |
|
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
|
2. |
INSPECT PRE-COLLISION BRAKE CANCEL SWITCH |
|
(a) Remove the pre-collision brake cancel switch (See page
|
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
1 - 2 |
Pressed |
Below 1 Ω |
|
Not pressed |
10 kΩ or higher |
Text in Illustration
|
*1 |
Component without harness connected (Pre-collision Brake Cancel Switch) |
(c) Reinstall the pre-collision brake cancel switch (See page
![2016 - 2017 MY Sienna [12/2015 - 11/2017]; PRE-COLLISION: PRE-COLLISION BRAKE CANCEL SWITCH: INSTALLATION](/t3Portal/stylegraphics/info.gif)
).
| NG |
|
|
|
3. |
CHECK HARNESS AND CONNECTOR (PRE-COLLISION BRAKE CANCEL SWITCH - DRIVING SUPPORT ECU) |
(a) Disconnect the D4 pre-collision brake cancel switch connector.
(b) Disconnect the A44 driving support ECU connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
D4-1 - A44-5 (PBSW) |
Always |
Below 1 Ω |
|
D4-1 - Body ground |
Always |
10 kΩ or higher |
(d) Reconnect the driving support ECU connector.
(e) Reconnect the pre-collision brake cancel switch connector.
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
4. |
CHECK HARNESS AND CONNECTOR (PRE-COLLISION BRAKE CANCEL SWITCH - BODY GROUND) |
|
(a) Disconnect the D4 pre-collision brake cancel switch connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
D4-2 - Body ground |
Always |
Below 1 Ω |
Text in Illustration
|
*1 |
Front view of wire harness connector (to Pre-collision Brake Cancel Switch) |
(c) Reconnect the pre-collision brake cancel switch connector.
| OK |
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|