THEFT DETERRENT / KEYLESS ENTRY SMART ENTRY AND START SYSTEM(for Entry Function, Gasoline Model) Back Door Entry Unlock Function does not Operate
DESCRIPTION
If the entry unlock function does not operate for the back door only, but the entry lock function operates, the request code is being transmitted properly from the back door. In this case, there may be a problem related to the open switch (connection between the license plate light assembly with back door opener switch and certification ECU (smart key ECU assembly)).
WIRING DIAGRAM
CAUTION / NOTICE / HINT
- NOTICE:
- ·
When using the GTS with the ignition switch off, perform lock and unlock operations using the door control switch of the multiplex network master switch assembly at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins, and then select the vehicle model manually.
Then select Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry&Start (CAN). While using the GTS, periodically perform lock and unlock operations using the door control switch of the multiplex network master switch assembly at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.
·The smart entry and start system (for Entry Function) uses the 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.
·Before replacing the certification ECU (smart key ECU assembly), refer to Service Bulletin.
·Check that there are no electrical key transmitter sub-assemblies in the vehicle.
·After repair, confirm that no DTCs are output.
PROCEDURE
When the door control switch on the multiplex network master switch assembly is operated, check that the back door lock and unlock according to the switch operation.
- OK:
Back door lock/unlock operate normally.
- Result:
Proceed to OK NG
OK
NG
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 Trunk Lid/Back Door Unlock Switch License plate light assembly with back door opener switch (open switch) OFF or ON OFF: License plate light assembly with back door opener switch (open switch) not pressed
ON: License plate light assembly with back door opener switch (open switch) pressed·Displays whether the license plate light assembly with back door opener switch (unlock switch) is on or off.
·Use this Data List item to help determine if there is a switch malfunction when the entry back door open function does not operate.
- Body Electrical > Entry&Start > Data List
-
Tester Display Trunk Lid/Back Door Unlock Switch - 50003 440 14
- OK:
The GTS display changes correctly in response to the operation of the license plate light assembly with back door opener switch.
- Result:
Proceed to OK NG
OK
NG
Disconnect the K6 certification ECU (smart key ECU assembly) connector.
Disconnect the T4 license plate light assembly with back door opener switch connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition Click Location & Routing(K6,T4)Location & Routingewd_type=routing;type=c,c;code=K6,T4
Click Connector(K6)Instrument Panel>Floor Wire>Smart Key ECU Assemblyewd_type=component;type=c;code=K6;pinno=16
Click Connector(T4)Body>No. 1 Back Door Wire>License Plate Light Assembly with Back Door Opener Switchewd_type=component;type=c;code=T4;pinno=3
K6-16 (TSW5) - T4-3 (UL) Always Below 1 Ω K6-16 (TSW5) or T4-3 (UL) - Other terminals and body ground Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
- Result:
Proceed to OK NG
OK
NG