THEFT DETERRENT / KEYLESS ENTRY SMART ENTRY AND START SYSTEM(for Entry Function, Gasoline Model) Back Door Entry Lock Function does not Operate
DESCRIPTION
If the entry lock function does not operate for the back door only, but the entry unlock function operates, the request code is being transmitted properly from the back door. In this case, there may be a problem related to the lock switch (connection between the back door opener switch assembly and certification ECU (smart key ECU assembly)).
WIRING DIAGRAM
CAUTION / NOTICE / HINT
- NOTICE:
- ·
When using the GTS with the ignition 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 the vehicle type under manual mode and enter the following menus: Body Electrical / Entry&Start. 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.
·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.
·Before replacing the certification ECU (smart key ECU assembly), refer to Service Bulletin.
·After repair, confirm that no DTCs are output.
·Check that there are no electrical key transmitter sub-assemblies in the vehicle.
PROCEDURE
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.
- OK:
Door locks 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 Lock Switch Back door opener switch assembly (lock switch) ON or OFF ON: Back door opener switch assembly (lock switch) pressed
OFF: Back door opener switch assembly (lock switch) not pressed·Displays whether the back door opener switch assembly (lock switch) is on or off.
·Use this Data List item to help determine if there is a switch malfunction when the back door lock function does not operate.
- Body Electrical > Entry&Start > Data List
-
Tester Display Trunk Lid/Back Door Lock Switch - 50003 440 13
- HINT:
-
When checking the operation of the entry lock function several times, it can be operated up to 2 times consecutively. To operate the function 3 times or more consecutively, the doors need to be unlocked once. However, this is only for the entry lock function. Other door lock operations, such as a wireless door lock operation, can be performed consecutively.
- OK:
The GTS display changes correctly in response to the operation of the back door opener switch assembly.
- Result:
Proceed to OK NG
OK
NG
Disconnect the R10 back door opener switch assembly connector.
Disconnect the M59 certification ECU (smart key ECU assembly) connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition R10-1 (L) - M59-17 (TSW6) Always Below 1 Ω R10-1 (L) or M59-17 (TSW6) - Other terminals and body ground Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
- Result:
Proceed to OK NG
OK
NG