THEFT DETERRENT / KEYLESS ENTRY SMART ENTRY AND START SYSTEM(for Entry Function) 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 touch sensor (connection between the certification ECU (smart key ECU assembly) and front door outside handle assembly (for driver door) (unlock sensor)).
WIRING DIAGRAM
CAUTION / NOTICE / HINT
- NOTICE:
- ·
The smart entry and start system (for Entry Function) uses the LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart entry and start system (for Entry Function) after confirming that the communication systems are functioning properly.
·When using the GTS with the engine switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry&Start(CAN). While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.
·Check that there are no electrical key transmitter sub-assemblies in the vehicle.
·Before performing the inspection, check that DTC B1242 (wireless door lock control) is not output.
·Before replacing the certification ECU (smart key ECU assembly), refer to smart entry and start system (for Entry Function) Precaution.
·After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".
PROCEDURE
When the door control switch on the power window regulator switch assembly is operated, check that the doors unlock and lock according to the switch operation.
Click hereVehicle Interior>DOOR LOCK>POWER DOOR LOCK CONTROL SYSTEM>OPERATION CHECK
- OK:
Door locks operate normally.
- Result:
Proceed to OK NG
OK
NG
Click hereVehicle Interior>DOOR LOCK>POWER DOOR LOCK CONTROL SYSTEM>HOW TO PROCEED WITH TROUBLESHOOTING
Connect the GTS to the DLC3.
Turn the engine switch on (IG).
Turn the GTS on.
Enter the following menus: Body Electrical / Main Body / Data List.
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 FR Door Lock Pos Front door RH unlock detection switch signal LOCK or UNLOCK LOCK: Front door RH locked
UNLOCK: Front door RH unlocked-
- Body Electrical > Main Body > Data List
-
Tester Display FR Door Lock Pos - 50003 123 196
- OK:
The GTS display changes correctly in response to the lock/unlock operation of the front RH door.
- Result:
Proceed to OK NG
OK
NG
Connect the GTS to the DLC3.
Turn the engine switch on (IG)
Turn the GTS on.
Enter the following menus: Body Electrical / Entry&Start / Data List.
Read the Data List according to the display on the GTS.
- Body Electrical > Entry&Start > 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·Displays whether the unlock sensor is on or off (even if the sensor is touched and contact is maintained, "ON" is displayed only momentarily).
·Use this Data List item to help determine if there is an unlock sensor malfunction when the entry unlock function does not operate.
- Body Electrical > Entry&Start > Data List
-
Tester Display D-Door Touch Sensor - 50003 125 8
- OK:
The GTS display changes correctly in response to the operation of the front door outside handle assembly (for driver door).
- Result:
Proceed to OK NG
OK
NG
Disconnect the G14 front door outside handle assembly (for driver door) connector.
Disconnect the E108 and E110 certification ECU (smart key ECU assembly) connectors.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition G14-4 (SENS) - E110-22 (SEN1) Always Below 1 Ω E108-11 (E) - Body ground Always Below 1 Ω G14-4 (SENS) or E110-22 (SEN1) - Body ground Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
Connect the G14 front door outside handle assembly (for driver door) connector.
Connect the E108 and E110 certification ECU (smart key ECU assembly) connectors.
Using an oscilloscope, check the waveform.
| *a | Component with harness connected
(Certification ECU (Smart Key ECU Assembly)) |
*b | Waveform |
| *c | In actuality, sampling is being performed | - | - |
- OK:
Tester Connection Condition Tool Setting Specified Condition E110-22 (SEN1) - E108-11 (E) Procedure:
1.Engine switch off
2.Electrical key transmitter sub-assembly brought outside vehicle
3.All doors locked
4.Electrical key transmitter sub-assembly not sufficiently close to vehicle
5.Driver door unlock sensor not touched → touched
2 V/DIV., 500 ms/DIV. Pulse generation
(See waveform)
- Result:
Proceed to OK NG
OK
NG