| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM100000001GU3A |
| Model Year Start: 2020 | Model: Corolla | Prod Date Range: [01/2019 - 09/2022] |
| Title: THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Entry Function, HV Model): Driver Side Door Entry Unlock Function does not Operate; 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022] | ||
|
Driver Side Door Entry Unlock Function does not Operate |
DESCRIPTION
If the entry unlock function does not operate for the driver door only, but the entry lock function operates, the request code is being transmitted properly from the driver door. In this case, there may be a problem related to the unlock sensor (connection between the certification ECU (smart key ECU assembly) and front door outside handle assembly (for driver door)).
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- When using the Techstream with the power switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
-
The smart key system (for Entry Function) uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Entry Function) after confirming that the communication systems are functioning properly.
Click here
![2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Entry Function, HV Model): HOW TO PROCEED WITH TROUBLESHOOTING](/t3Portal/stylegraphics/info.gif)
-
Before replacing the certification ECU (smart key ECU assembly), refer to Precaution.
Click here
- After repair, confirm that no DTCs are output.
- Check that there are no electrical key transmitter sub-assemblies in the vehicle.
PROCEDURE
|
1. |
CHECK POWER DOOR LOCK CONTROL SYSTEM |
(a) When the door control switch on the multiplex network master switch assembly is operated, check that the doors unlock and lock according to the switch operation.
Click here
OK:
Door locks operate normally.
| NG |
|
|
|
2. |
CHECK ENTRY OPERATION |
(a) Check that the entry unlock function.
|
(1) Turn the power switch off. |
|
(2) Open and close the driver door.
(3) With the electrical key transmitter sub-assembly outside of the vehicle, press the lock switch of the electrical key transmitter sub-assembly to lock all of the doors.
(4) Hold the electrical key transmitter sub-assembly at the same height as the door outside handle assembly and approximately 0.3 m (0.984 ft.) from the driver door.
(5) Check that the LED of the electrical key transmitter sub-assembly blinks.
(6) Touch the unlock sensor on the backside of the front door outside handle assembly (for driver door) for 2 seconds or more.*
- *: Perform this step 3 seconds or more after performing step (3).
HINT:
When checking the operation of the unlock sensor again, make sure to perform the procedure from step (1).
|
Result |
Proceed to |
|---|---|
|
Entry function does not operate normally |
A |
|
Entry function operates normally |
B |
| B |
|
|
|
3. |
READ VALUE USING TECHSTREAM (FL DOOR LOCK POS) |
(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 |
|---|---|---|---|---|
|
FL Door Lock Pos |
Front door LH unlock detection switch signal |
UNLOCK or LOCK |
UNLOCK: Front door LH unlocked LOCK: Front door LH locked |
- |
Body Electrical > Main Body > Data List
|
Tester Display |
|---|
|
FL Door Lock Pos |
OK:
The Techstream display changes correctly in response to the lock/unlock operation of the driver door.
| NG |
|
GO TO LIGHTING SYSTEM (Proceed to Door Unlock Detection Switch Circuit) |
|
|
4. |
READ VALUE USING TECHSTREAM (D-DOOR TOUCH SENSOR) |
|
(a) Turn the power switch off. |
|
(b) Connect the Techstream to the DLC3.
(c) Turn the power switch on (IG).
(d) Turn the Techstream on.
(e) Open and close the driver door.
(f) With the electrical key transmitter sub-assembly outside of the vehicle, press the lock switch of the electrical key transmitter sub-assembly to lock all of the doors.
(g) Hold the electrical key transmitter sub-assembly at the same height as the door outside handle assembly and approximately 0.3 m (0.984 ft.) from the driver door.
(h) Check that the LED of the electrical key transmitter sub-assembly blinks.
(i) Read the Data List according to the display on the Techstream.
(j) Touch the unlock sensor on the backside of the front door outside handle assembly (for driver door) for 2 seconds or more.*
- *: Perform this step 3 seconds or more after performing step (f).
HINT:
When checking the operation of the unlock sensor again, make sure to perform the procedure from step (a).
Body Electrical > Smart Key > Data List
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
D-Door Touch Sensor |
Driver door touch sensor (unlock sensor) |
OFF or ON |
OFF: Driver door touch sensor (unlock sensor) not touched ON: Driver door touch sensor (unlock sensor) touched |
|
Body Electrical > Smart Key > Data List
|
Tester Display |
|---|
|
D-Door Touch Sensor |
OK:
The Techstream display changes correctly in response to the operation of the front door outside handle assembly (for driver door).
| OK |
|
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
|
|
|
5. |
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER DOOR)) |
(a) Disconnect the O61 certification ECU (smart key ECU assembly) connector.
(b) Disconnect the L3 front door outside handle assembly (for driver door) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O61-17 (CLG1) - L3-6 (ANT1) |
Always |
Below 1 Ω |
|
O61-16 (CG1B) - L3-4 (ANT2) |
Always |
Below 1 Ω |
|
O61-17 (CLG1) or L3-6 (ANT1) - Other terminals and body ground |
Always |
10 kΩ or higher |
|
O61-16 (CG1B) or L3-4 (ANT2) - Other terminals and body ground |
Always |
10 kΩ or higher |
(d) Reconnect the L3 front door outside handle assembly (for driver door) connector.
(e) Reconnect the O61 certification ECU (smart key ECU assembly) connector.
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
6. |
READ VALUE USING TECHSTREAM (D-DOOR TOUCH SENSOR) |
|
(a) Turn the power switch off. |
|
(b) Connect all connectors.
(c) Connect the Techstream to the DLC3.
(d) Turn the power switch on (IG).
(e) Turn the Techstream on.
(f) Open and close the driver door.
(g) With the electrical key transmitter sub-assembly outside of the vehicle, press the lock switch of the electrical key transmitter sub-assembly to lock all of the doors.
(h) Hold the electrical key transmitter sub-assembly at the same height as the door outside handle assembly and approximately 0.3 m (0.984 ft.) from the driver door.
(i) Check that the LED of the electrical key transmitter sub-assembly blinks.
(j) Read the Data List according to the display on the Techstream.
(k) Touch the unlock sensor on the backside of the front door outside handle assembly (for driver door) for 2 seconds or more.*
- *: Perform this step 3 seconds or more after performing step (g).
HINT:
When checking the operation of the unlock sensor again, make sure to perform the procedure from step (a).
Body Electrical > Smart Key > Data List
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
D-Door Touch Sensor |
Driver door touch sensor (unlock sensor) |
OFF or ON |
OFF: Driver door touch sensor (unlock sensor) not touched ON: Driver door touch sensor (unlock sensor) touched |
|
Body Electrical > Smart Key > Data List
|
Tester Display |
|---|
|
D-Door Touch Sensor |
OK:
The Techstream display changes correctly in response to the operation of the front door outside handle assembly (for driver door).
| OK |
|
END (CONNECTOR WAS NOT CONNECTED SECURELY) |
| NG |
|
REPLACE FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER DOOR)
|
|
|