Toyota CH-R Service Manual: Back Door Courtesy Switch Circuit
DESCRIPTION
The main body ECU (Multiplex Network Body ECU) receives a back door open/closed signal from back door lock assembly.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Before replacing the main ECU (multiplex network body ECU), refer to Registration*1.
Click here .gif)
- *1: w/ Smart Key System
PROCEDURE
|
1. |
READ VALUE USING TECHSTREAM |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Main Body / Data List.
(e) Read the Data List according to the display on the Techstream.
Body Electrical > Main Body > Data List|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Back Door Courtesy SW |
Back door courtesy switch signal |
ON or OFF |
ON: Back door open OFF: Back door closed |
- |
|
Tester Display |
|---|
|
Back Door Courtesy SW |
OK:
Normal conditions listed above are displayed.
| OK | .gif) |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
|
|
.gif)
|
2. |
INSPECT BACK DOOR LOCK ASSEMBLY |
(a) Remove the back door lock assembly.
Click here
(b) Inspect the back door courtesy switch built in the back door lock assembly.
Click here
OK:
Back door lock assembly is normal.
| NG | |
REPLACE BACK DOOR LOCK ASSEMBLY |
|
|
3. |
CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) |
(a) Disconnect the 3H instrument panel junction block assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
S9-3(D+) - 3H-34 |
Always |
Below 1 Ω |
|
S9-3(D+) or 3H-34 - Body ground |
Always |
10 kΩ or higher |
|
S9-2(ACT-) - Body ground |
Always |
Below 1 Ω |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
4. |
INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY |
(a) Remove the instrument panel junction block assembly.
Click here
(b) Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.
Click here
(c) Measure the resistance according to the value(s) in the table below.
|
*a |
Component without harness connected (Instrument Panel Junction Block Assembly) |
- |
- |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
3H-34 - MB-4 (BCTY) |
Always |
Below 1 Ω |
| OK | |
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
|
| NG | |
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
|
ACC Signal Circuit
DESCRIPTION
This circuit detects the ignition switch ACC or off condition, and sends it to
the main body ECU (multiplex network body ECU).
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
...
Door Courtesy Switch Circuit
DESCRIPTION
The main body ECU (multiplex network body ECU) detects the condition of the door
courtesy light switch assembly.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Before replacing th ...
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Toyota CH-R Service Manual > Rear Disc Brake Pad(for Tmmt Made): Removal
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CAUTION / NOTICE / HINT
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PROCEDURE
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The seat warmer/ventilation is provided
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Toyota CH-R Owners Manual
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Toyota CH-R Service Manual
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KIA Niro EV / Hybrid (SG2) - (2021-2023) - Owner's manual
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