| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM100000001HAJU |
| Model Year Start: 2020 | Model: Corolla | Prod Date Range: [01/2019 - 09/2022] |
| Title: DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM (for Sedan, HV Model): All Doors LOCK/UNLOCK Functions do not Operate Via Door Control Switch; 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022] | ||
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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 door control switch assembly 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
![2020 MY Corolla Corolla HV [01/2019 - 04/2020]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, HV Model): REGISTRATION](/t3Portal/stylegraphics/info.gif)
PROCEDURE
|
1. |
READ VALUE USING TECHSTREAM (DOOR LOCK SW-LOCK, DOOR LOCK SW-UNLOCK) |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(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 switch of door control switch assembly not pushed ON: Lock switch of door control switch assembly pushed |
- |
|
Door Lock SW-Unlock |
Door control switch assembly unlock signal |
OFF or ON |
OFF: Unlock switch of door control switch assembly not pushed ON: Unlock switch of door control switch assembly pushed |
- |
Body Electrical > Main Body > Data List
|
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 |
|
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
|
|
|
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 |
|
|
|
3. |
CHECK HARNESS AND CONNECTOR (DOOR CONTROL SWITCH ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND BODY GROUND) |
(a) Disconnect the 4E and 4F 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 |
|---|---|---|
|
K11-2 (UL) - 4E-39 |
Always |
Below 1 Ω |
|
K11-4 (L) - 4F-16 |
Always |
Below 1 Ω |
|
K11-5 (E) - Body ground |
Always |
Below 1 Ω |
|
4E-39 or K11-2 (UL) - Other terminals and body ground |
Always |
10 kΩ or higher |
|
4F-16 or K11-4 (L) - Other terminals and 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) - 4E-39 |
Always |
Below 1 Ω |
|
MB-20 (L1) - 4F-16 |
Always |
Below 1 Ω |
| OK |
|
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
|
| NG |
|
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
|
|
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