Toyota CH-R Service Manual: All Doors LOCK/UNLOCK Functions do not Operate Via Door Control Switch
DESCRIPTION
The main body ECU (multiplex network body ECU) receives switch signals from the power window regulator switch assembly on the front passenger door and activates the door lock motor on each door according to these signals.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Before replacing the main body ECU (multiplex network body ECU), refer to Registration*.
Click here
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- *: w/ Smart Key System
PROCEDURE
|
1. |
READ VALUE USING TECHSTREAM (Door Lock SW-Lock, Door Lock SW-Unlock) |
(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 |
|---|---|---|---|---|
|
Door Lock SW-Lock |
Door control switch assembly lock signal |
OFF or ON |
OFF: Lock side of door control switch assembly not pushed ON: Lock side of door control switch assembly pushed |
- |
|
Door Lock SW-Unlock |
Door control switch assembly unlock signal |
OFF or ON |
OFF: Unlock side of door control switch assembly not pushed ON: Unlock side of door control switch assembly pushed |
- |
|
Tester Display |
|---|
|
Door Lock SW-Lock |
|
Door Lock SW-Unlock |
OK:
The Techstream indicates ON or OFF according to the switch operation shown in the table.
| OK | .gif) |
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
|
|
.gif)
|
2. |
INSPECT DOOR CONTROL SWITCH ASSEMBLY |
(a) Remove the door control switch assembly.
Click here
(b) Inspect the door control switch assembly.
Click here
| NG | |
REPLACE DOOR CONTROL SWITCH ASSEMBLY
|
|
|
3. |
CHECK HARNESS AND CONNECTOR (DOOR CONTROL SWITCH ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) |
(a) Disconnect the 3A and 3D instrument panel junction block assembly connectors.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I9-2 (UL) - 3A-39 |
Always |
Below 1 Ω |
|
I9-4 (L) - 3D-16 |
Always |
Below 1 Ω |
|
I9-5 (E) - Body ground |
Always |
Below 1 Ω |
|
I9-2 (UL) or 3A-39 - Body ground |
Always |
10 kΩ or higher |
|
I9-4 (L) or 3D-16 - Body ground |
Always |
10 kΩ or higher |
| 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).
|
*a |
Component without harness connected (Instrument Panel Junction Block Assembly) |
- |
- |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
MB-22 (UL1) - 3A-39 |
Always |
Below 1 Ω |
|
MB-20 (L1) - 3D-16 |
Always |
Below 1 Ω |
| OK | |
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
|
| NG | |
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
|
All Doors LOCK/UNLOCK Functions do not Operate Via Door Control Switch or Door
Key Cylinder
DESCRIPTION
The main body ECU (multiplex network body ECU) receives switch signals from the
multiplex network master switch assembly and driver door key cylinder lock or unlock
switch signals fro ...
Improper Operation
DESCRIPTION
In cases where doors locked (lock) by themselves even though a door lock operation
was not performed, possible causes include vehicle-side malfunction, environmental
malfunction, or o ...
Other materials:
Toyota CH-R Service Manual > Continuously Variable Transaxle System: Precaution
PRECAUTION
IGNITION SWITCH EXPRESSION
HINT:
The type of ignition switch used on this model differs depending on the specifications
of the vehicle. The expressions listed in the table below are used in this section.
Expression
Ignition Switch (Position)
Engine S ...
Toyota CH-R Service Manual > Lighting (int): Vanity Light Bulb
Replacement
REPLACEMENT
CAUTION / NOTICE / HINT
HINT:
Use the same procedure for both the LH and RH sides.
The procedure described below is for the LH side.
PROCEDURE
1. REMOVE VANITY LIGHT ASSEMBLY
Click here
2. REMOVE VANITY LIGHT BULB
(a) Remove the vanity light bul ...
Toyota CH-R Owners Manual
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Toyota CH-R Service Manual
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