THEFT DETERRENT / KEYLESS ENTRY SMART ENTRY AND START SYSTEM(for Entry Function, HEV Model) Back Door Entry Lock and Unlock Functions do not Operate
DESCRIPTION
If the entry lock and unlock functions do not operate for the back door only, the request code may not be being transmitted from the back door. If the entry functions for other doors operate properly, communication between the electrical key transmitter sub-assembly and door control receiver assembly is normal. In this case, there may be a problem with request code transmission (communication between the certification ECU (smart key ECU assembly) and electrical key antenna (outside luggage compartment)) or there may be wave interference.
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.
·Check that there are no electrical key transmitter sub-assemblies in the vehicle.
- HINT:
- ·
If the back door entry lock and unlock 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 Vehicle Control History (RoB) - 50005 440 62
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
| *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 back door open/lock function check.
- HINT:
- ·
Communication may not be possible if the electrical key transmitter sub-assembly is within 0.2 m (0.656 ft.) of the electrical key antenna (outside luggage compartment)
·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.
- Result:
Result Proceed to Entry function does not operate normally A Entry function operates normally 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 Lock Switch Back door opener switch assembly (lock switch) OFF or ON OFF: Back door opener switch assembly (lock switch) not pressed
ON: Back door opener switch assembly (lock switch) 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.
Trunk Lid/Back Door Unlock Switch Back door opener switch assembly (open switch) OFF or ON OFF: Back door opener switch assembly (open switch) not pressed
ON: Back door opener switch assembly (open switch) pressed·Displays whether the back door opener switch assembly 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 Lock Switch Trunk Lid/Back Door Unlock Switch - 50003 440 13,14
- 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
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 m (2.30 to 3.28 ft.) |
The illustrations shown are examples only.
Select either channel 1 or channel 2 and perform the key diagnostic mode inspection for each channel.
Check the electrical key antenna (outside luggage compartment):
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 buzzer sounds.
- HINT:
- ·
Select either channel 1 or channel 2 and perform the key diagnostic mode inspection for each channel.
·If the 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.
- Result:
Result Proceed to Buzzer does not sound A Buzzer sounds B
A
B
Disconnect the O200 certification ECU (smart key ECU assembly) connector.
Disconnect the S11 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 O200-4 (CLG8) - S11-2 (ANTE8) Always Below 1 Ω O200-3 (CG8B) - S11-1 (CLGB) Always Below 1 Ω O200-4 (CLG8) or S11-2 (ANTE8) - Other terminals and body ground Always 10 kΩ or higher O200-3 (CG8B) or S11-1 (CLGB) - Other terminals and body ground Always 10 kΩ or higher
Reconnect the O200 certification ECU (smart key ECU assembly) connector.
- Result:
Proceed to OK NG
OK
NG
| *a | Front view of wire harness connector
(to Electrical Key Antenna (Outside Luggage Compartment)) |
| *b | Waveform 1 |
Using an oscilloscope, check the waveform.
- OK:
Tester Connection Condition Tool Setting Specified Condition S11-1 (CLGB) - S11-2 (ANTE8) Procedure:
1.Ignition switch off
2.Electrical key transmitter sub-assembly brought outside vehicle
3.All doors closed
4.Back door opener switch assembly off → on
5 V/DIV., 50 ms./DIV. Pulse generation
(See waveform 1)
- Result:
Proceed to OK NG
OK
NG
Connect all connectors and check that the function operates normally.
- Result:
Result Proceed to Entry function operates normally A Entry function does not operate normally B
A
B
Disconnect the O200 certification ECU (smart key ECU assembly) connector.
Disconnect the U5 back door opener switch assembly connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition O200-16 (TSW5) - U5-3 (UL) Always Below 1 Ω O200-17 (TSW6) - U5-1 (L) Always Below 1 Ω U5-2 (E) - Other terminals and body ground Always Below 1 Ω O200-16 (TSW5) or U5-3 (UL) - Other terminals and body ground Always 10 kΩ or higher O200-17 (TSW6) or U5-1 (L) - Other terminals and body ground Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
- Result:
Proceed to OK NG
OK
NG
Connect all connectors and check that the function operates normally.
- Result:
Result Proceed to Entry function operates normally A Entry function does not operate normally B
A
B