- Engine switch off
- All doors closed
- Key not in detection area
- Touch sensor (for driver side) not touched
| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM100000000VJK6 |
| Model Year Start: 2016 | Model: Sienna | Prod Date Range: [12/2015 - ] |
| Title: THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM(for Entry Function): Driver Side Door Entry Unlock Function does not Operate; 2016 - 2020 MY Sienna [12/2015 - ] | ||
|
Driver Side Door Entry Unlock Function does not Operate |
DESCRIPTION
If the driver door entry lock function operates normally, but its entry unlock function does not, this means that the request code from the driver door is being output normally. In this case, a malfunction in the touch sensor circuit (from the certification ECU (smart key ECU assembly) to the front door outside handle assembly (touch sensor)) is suspected.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
-
The smart key system (for entry function) uses a multiplex communication system (LIN communication system) and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting (See page
![2016 - 2020 MY Sienna [12/2015 - ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM(for Entry Function): HOW TO PROCEED WITH TROUBLESHOOTING](/t3Portal/stylegraphics/info.gif)
). Troubleshoot the smart key system (for entry function) after confirming that the communication system is functioning properly.
- Confirm that another key is not in the cabin.
PROCEDURE
|
1. |
CHECK POWER DOOR LOCK OPERATION |
(a) When the door control switch on the master switch assembly is operated, check that the doors unlock and lock according to switch operation (See page
).
OK:
Door locks operate normally.
| NG |
|
GO TO POWER DOOR LOCK CONTROL SYSTEM (Proceed to Problem Symptoms Table) |
|
|
2. |
READ VALUE USING TECHSTREAM (DOOR LOCK POSITION SWITCH) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine 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.
Main Body (Main Body ECU)
|
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
FL Door Lock Pos |
Front LH side door lock position switch signal / UNLOCK or LOCK |
UNLOCK: Front LH side door unlocked LOCK: Front LH side door locked |
- |
OK:
On the Techstream screen, the display changes between UNLOCK and LOCK as shown in the chart above.
| NG |
|
GO TO LIGHTING SYSTEM (Proceed to Door Unlock Detection Switch Circuit) |
|
|
3. |
READ VALUE USING TECHSTREAM (DOOR OUTSIDE HANDLE) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Smart Key / Data List.
(e) Read the Data List according to the display on the Techstream.
Smart Key (Certification ECU (Smart Key ECU Assembly))
|
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
D-Door Touch Sensor |
Status of touch sensor (for driver side) / ON or OFF |
ON: Touch sensor touched OFF: Touch sensor not touched |
- |
OK:
On the Techstream screen, the display changes between ON and OFF as shown in the chart above.
| OK |
|
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (See page
|
|
|
4. |
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - FRONT DOOR OUTSIDE HANDLE) |
(a) Disconnect the certification ECU (smart key ECU assembly) connector.
(b) Disconnect the front door outside handle assembly (for driver side) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
D88-20 (SEN1) - p1-4 (SENS) |
Always |
Below 1 Ω |
|
D88-20 (SEN1) - Body ground |
Always |
10 kΩ or higher |
|
p1-4 (SENS) - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
5. |
INSPECT CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (TOUCH SENSOR SIGNAL INPUT) |
(a) Reconnect the certification ECU (smart key ECU assembly) connector.
(b) Reconnect the front door outside handle assembly (for driver side) connector.
(c) Measure the voltage and check for pulses according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
D88-20 (SEN1) - D88-15 (E) |
|
Pulse generation |
|
D88-20 (SEN1) - D88-15 (E) |
|
Below 2 V |
Text in Illustration
|
*a |
Component with harness connected (Certification ECU (Smart Key ECU Assembly)) |
| OK |
|
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (See page
|
| NG |
|
REPLACE FRONT DOOR OUTSIDE HANDLE ASSEMBLY (for Driver Side) (See page
|
|
|