THEFT DETERRENT / KEYLESS ENTRY SMART ENTRY AND START SYSTEM(for Entry Function (except NR Series)) Luggage Compartment Door Entry Unlock Function does not Operate when Key is Outside Luggage Compartment
DESCRIPTION
If the entry luggage compartment door open function does not operate, there may be a malfunction in the luggage electrical key switch circuit or certification ECU (smart key ECU assembly), which receives a signal from the luggage electrical key switch circuit, or a communication error between the vehicle (electrical key antenna (outside luggage compartment)) and electrical key transmitter sub-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 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.
·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.
·After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".
·Check that there are no electrical key transmitter sub-assemblies in the vehicle.
- HINT:
- ·
If the entry luggage compartment open function does not operate, the cause of the malfunction may be stored in the certification ECU (smart key ECU assembly).
·If the cause of the malfunction is stored in the certification ECU (smart key ECU assembly), the following table is helpful in checking whether the malfunction was caused by wave interference.
- Body Electrical > Entry&Start > Utility
-
Tester Display Operation History - 50005 125 52
PROCEDURE
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 Open Mode Function Entry luggage compartment open mode OFF or ON Customize setting displayed -
- Body Electrical > Entry&Start > Data List
-
Tester Display Trunk Lid Open Mode Function - 50003 440 81
- Result:
Result Proceed to Trunk Lid Open Mode Function is ON A Trunk Lid Open Mode Function is OFF B
A
B
Operate the door control switch to unlock the doors, then operate the luggage electrical key switch and check that the luggage compartment door opens.
- Result:
Result Proceed to The luggage compartment door opens A The luggage compartment door does not open B
A
B
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 Luggage electrical key switch OFF or ON OFF: Luggage electrical key switch not pushed
ON: Luggage electrical key switch pushed·Displays whether the luggage electrical key switch is on or off.
·Use this Data List item to help determine if there is a switch malfunction when the entry luggage compartment 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 luggage electrical key switch.
- Result:
Proceed to OK NG
OK
NG
| *1 | Electrical Key Transmitter Sub-assembly |
| *a | Approximately 0.3 m (0.984 ft.) |
The illustrations shown are examples only.
Bring the electrical key transmitter sub-assembly approximately 0.3 m (0.984 ft.) from the electrical key antenna (outside luggage compartment) and perform an entry luggage compartment open function check.
- HINT:
- ·
Communication may not be possible if the electrical key transmitter sub-assembly is brought within 0.2 m (0.656 ft.) of the rear bumper.
·When the electrical key transmitter sub-assembly is brought near the electrical key antenna (outside luggage compartment), the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.
·If the inspection result is that the problem only occurs in certain locations or at certain times of day, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.
·There may be wave interference if the vehicle is near broadcasting antennas, large video displays, wireless garage door opener systems, wireless security cameras, home security systems, etc. In this case, move the vehicle to a different location and check if there is any improvement.
·If a tool for checking radio waves, such as a signal strength meter, is available, move around the area while observing both the LF band (used by the vehicle antenna to form the detection area) and RF band (used by the electrical key transmitter sub-assembly for transmission) to check for locations where there is wave interference.
- OK:
Entry functions operate normally.
- Result:
Proceed to OK NG
OK
NG
Check the following antenna in key diagnostic mode.
- Body Electrical > Entry&Start > Utility
-
Tester Display Communication Check(Key Diag Mode) - 50005 440 2541
| *1 | Electrical Key Transmitter Sub-assembly |
| *a | 0.7 to 1.0 m (2.30 to 3.28 ft.) |
The illustrations shown are examples only.
When the electrical key transmitter sub-assembly is brought within 0.7 to 1 m (2.30 to 3.28 ft.) of the electrical key antenna (outside luggage compartment), check that the combination meter assembly buzzer sounds.
- HINT:
- ·
Select either channel 1 or channel 2 and inspect key diagnostic mode for each channel.
·If the combination meter assembly buzzer sounds with [CH1] displayed but not with [CH2], the electrical key transmitter sub-assembly cannot be detected by channel 2 due to a malfunction, such as wave interference.
- OK:
Combination meter assembly buzzer sounds.
- Result:
Proceed to OK NG
OK
NG
Disconnect the O174 certification ECU (smart key ECU assembly) connector.
Disconnect the O39 electrical key antenna (outside luggage compartment) connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition O174-4 (CLG8) - O39-2 (ANTE8) Always Below 1 Ω O174-3 (CG8B) - O39-1 (CLGB) Always Below 1 Ω O174-4 (CLG8) or O39-2 (ANTE8) - Other terminals and body ground Always 10 kΩ or higher O174-3 (CG8B) or O39-1 (CLGB) - Other terminals and body ground Always 10 kΩ or higher
Reconnect the O174 certification ECU (smart key ECU assembly) connector.
Reconnect the O39 electrical key antenna (outside luggage compartment) connector.
- Result:
Proceed to OK NG
OK
NG
| *a | Component with harness connected
(Certification ECU (Smart Key ECU Assembly)) |
*b | Waveform 1 |
Using an oscilloscope, check the waveform.
- OK:
Tester Connection Condition Tool Setting Specified Condition O174-4 (CLG8) - I196-29 (E) Procedure:
1.Ignition switch off
2.Electrical key transmitter sub-assembly brought outside vehicle
3.All doors closed
4.Luggage electrical key switch off → on
2 V/DIV., 500 ms/DIV. Pulse generation
(See waveform 1)O174-3 (CG8B) - I196-29 (E) Procedure:
1.Ignition switch off
2.Electrical key transmitter sub-assembly brought outside vehicle
3.All doors closed
4.Luggage electrical key switch off → on
2 V/DIV., 500 ms/DIV. Pulse generation
(See waveform 1)
- Result:
Proceed to OK NG
OK
NG
Connect all connectors and check that the entry luggage compartment open function operates.
- Result:
Result Proceed to Luggage compartment open function operates normally A Luggage compartment open function does not operate normally B
A
B
- Result:
Proceed to OK NG
OK
NG
Disconnect the O174 certification ECU (smart key ECU assembly) connector.
Disconnect the O116 luggage electrical key switch connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition O174-16 (TSW5) - O116-3 (UL) Always Below 1 Ω O116-2 (E) - Body ground Always Below 1 Ω O174-16 (TSW5) or O116-3 (UL) - Other terminals and body ground Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
Connect all connectors and check that the entry luggage compartment open function operates.
- Result:
Result Proceed to Luggage compartment open function operates normally A Luggage compartment open function does not operate normally B
A
B