THEFT DETERRENT / KEYLESS ENTRY ENTRY AND START SYSTEM(for Entry Function) 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 unlock switch (connection between the luggage electrical key switch and certification ECU (smart key ECU assembly)).
WIRING DIAGRAM
CAUTION / NOTICE / HINT
- NOTICE:
- ·
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. 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 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 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
Connect the GTS to the DLC3.
Turn the engine switch on (IG).
Turn the GTS on.
Enter the following menus: Customize Setting / Entry & Start.
- Entry & Start
-
Tester Display Description Default Setting ECU Back Door Opening Operation Function that sets the back door when the user is carrying the electrical key transmitter sub-assembly and presses the luggage electrical key switch (unlock switch). Long 00:Long,01:Twice,10:OFF Certification ECU (Smart key ECU assembly) - 50006 17
- Result:
Result Proceed to Customize setting is "Long" or "Twice" A Customize setting is "OFF" B
A
B
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 Tr/B-Door Unlock SW Luggage electrical key switch (unlock switch) ON or OFF ON: Luggage electrical key switch (unlock switch) pressed
OFF: Luggage electrical key switch (unlock switch) not pressed·Displays whether the luggage electrical key switch (unlock switch) is on or off.
·Use this Data List item to help determine if there is a switch malfunction when the back door unlock function does not operate.
- Body Electrical > Entry&Start > Data List
-
Tester Display Tr/B-Door Unlock SW - 50003 125 17
- OK:
The GTS display changes correctly in response to the operation of the luggage electrical key switch.
- Result:
Proceed to OK NG
OK
NG
Disconnect the i11 luggage electrical key switch connector.
Disconnect the N155 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 i11-3 (UL) - N155-26 (TSW5) Always Below 1 Ω i11-3 (UL) or N155-26 (TSW5) - Other terminals and body ground Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
Remove the luggage electrical key switch.
Inspect the luggage electrical key switch.
- Result:
Proceed to OK NG
OK
NG