| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM1000000028DY4 |
| Model Year Start: 2023 | Model: GR Corolla | Prod Date Range: [11/2022 - ] |
| Title: DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM: All Doors LOCK/UNLOCK Functions do not Operate Via Door Key Cylinder; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 - ] | ||
|
All Doors LOCK/UNLOCK Functions do not Operate Via Door Key Cylinder |
DESCRIPTION
The main body ECU (multiplex network body ECU) receives door key cylinder lock or unlock switch signals from the front door lock with motor assembly (for driver door). The main body ECU (multiplex network body ECU) activates the door lock motor on each door according to these signals.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
If the main body ECU (multiplex network body ECU) is replaced, refer to the Smart Key System (for Start Function). *
*: w/ Smart Key System
for HV Model: Click here
![2023 - 2025 MY Corolla Corolla HV [09/2022 - ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, HV Model): REGISTRATION](/t3Portal/stylegraphics/info.gif)
for Gasoline Model: Click here
PROCEDURE
|
1. |
CHECK DOOR LOCK OPERATION |
(a) Proceed to the next step according to the symptom if all the doors cannot be locked/unlocked.
|
Result |
Proceed to |
|---|---|
|
All doors cannot be locked/unlocked by using door key cylinder on driver door. |
A |
|
All doors cannot be locked/unlocked by using door key cylinder on front passenger door. (w/ Front Passenger Door Key Cylinder) |
B |
|
All doors cannot be locked/unlocked by using both driver door and front passenger door key cylinders. (w/ Front Passenger Door Key Cylinder) |
C |
| B |
|
| C |
|
|
|
2. |
READ VALUE USING GTS (DOOR LOCK/UNLOCK SWITCH STATUS BY A MECHANICAL KEY) |
(a) Read the Data List according to the display on the GTS.
Body Electrical > Main Body > Data List
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Door Lock Switch Status by a Mechanical Key (D/P Door) |
Driver door or front passenger door* key-linked switch lock signal |
OFF or ON |
OFF: Driver door or front passenger door* key cylinder not turned to lock position ON: Driver door or front passenger door* key cylinder turned to lock position |
- |
|
Door Unlock Switch Status by a Mechanical Key (D Door) |
Driver door key-linked switch unlock signal |
OFF or ON |
OFF: Driver door key cylinder not turned to unlock position ON: Driver door key cylinder turned to unlock position |
- |
Body Electrical > Main Body > Data List
|
Tester Display |
|---|
|
Door Lock Switch Status by a Mechanical Key (D/P Door) |
|
Door Unlock Switch Status by a Mechanical Key (D Door) |
- *: w/ Front Passenger Door Key Cylinder
OK:
On the GTS screen, ON or OFF is displayed for each item according to the table above.
| OK |
|
|
|
3. |
INSPECT FRONT DOOR LOCK WITH MOTOR ASSEMBLY (for Driver Door) |
Click here
| NG |
|
REPLACE FRONT DOOR LOCK WITH MOTOR ASSEMBLY (for Driver Door) |
|
|
4. |
CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK WITH MOTOR ASSEMBLY LH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND) |
(a) Disconnect the L4 front door lock with motor assembly LH connector.
(b) Disconnect the I85 main body ECU (multiplex network body ECU) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
L4-7 (L) - I85-28 (L2) |
Always |
Below 1 Ω |
|
L4-6 (UL) - I85-4 (UL3) |
Always |
Below 1 Ω |
|
L4-10 (E) - Body ground |
Always |
Below 1 Ω |
|
L4-7 (L) - Body ground |
Always |
10 kΩ or higher |
|
I85-28 (L2) - Body ground |
Always |
10 kΩ or higher |
|
L4-6 (UL) - Body ground |
Always |
10 kΩ or higher |
|
I85-4 (UL3) - Body ground |
Always |
10 kΩ or higher |
| OK |
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
5. |
READ VALUE USING GTS (DOOR LOCK/UNLOCK SWITCH STATUS BY A MECHANICAL KEY) |
(a) Read the Data List according to the display on the GTS.
Body Electrical > Main Body > Data List
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Door Lock Switch Status by a Mechanical Key (D/P Door) |
Driver door or front passenger door key-linked switch lock signal |
OFF or ON |
OFF: Driver door or front passenger door key cylinder not turned to lock position ON: Driver door or front passenger door key cylinder turned to lock position |
- |
|
Door Unlock Switch Status by a Mechanical Key (P Door) |
Front passenger door key-linked switch unlock signal |
OFF or ON |
OFF: Front passenger door key cylinder not turned to unlock position ON: Front passenger door key cylinder turned to unlock position |
- |
Body Electrical > Main Body > Data List
|
Tester Display |
|---|
|
Door Lock Switch Status by a Mechanical Key (D/P Door) |
|
Door Unlock Switch Status by a Mechanical Key (P Door) |
OK:
On the GTS screen, ON or OFF is displayed for each item according to the table above.
| OK |
|
|
|
6. |
INSPECT FRONT DOOR LOCK WITH MOTOR ASSEMBLY RH (for Front Passenger Door) |
Click here
| NG |
|
REPLACE FRONT DOOR LOCK WITH MOTOR ASSEMBLY RH (for Front Passenger Door) |
|
|
7. |
CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK WITH MOTOR ASSEMBLY RH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND) |
(a) Disconnect the K5 front door lock with motor assembly RH connector.
(b) Disconnect the I231 main body ECU (multiplex network body ECU) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
K5-8 (L) - I85-28 (L2) |
Always |
Below 1 Ω |
|
K5-9 (UL) - I231-25 (UL2) |
Always |
Below 1 Ω |
|
K5-10 (E) - Body ground |
Always |
Below 1 Ω |
|
K5-8 (L) - Body ground |
Always |
10 kΩ or higher |
|
I85-28 (L2) - Body ground |
Always |
10 kΩ or higher |
|
K5-9 (UL) - Body ground |
Always |
10 kΩ or higher |
|
I231-25 (UL2) - Body ground |
Always |
10 kΩ or higher |
| OK |
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|