Back Door Entry Lock and Unlock Functions do not Operate [07/2020 - ]: Procedure
- CHECK POWER DOOR LOCK CONTROL SYSTEM
- 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.
Refer to OPERATION CHECK [07/2020 - ]
OK
Back door lock/unlock operate normally.
Result
Proceed to OK NG
Result:
NG
GO TO POWER DOOR LOCK CONTROL SYSTEM. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [07/2020 - ]
Result:
OK
See step 2
- 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.
- CHECK WAVE ENVIRONMENT
- 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.
Refer to OPERATION CHECK [07/2020 - ]
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.
*1 Electrical Key Transmitter Sub-assembly *a Approximately 0.3 m (0.984 ft.) The illustrations shown are examples only.
Result
Result Proceed to Entry function does not operate normally A Entry function operates normally B
Result:
B
AFFECTED BY WAVE INTERFERENCE
Result:
A
See step 3
- 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.
- READ VALUE USING GTS (TRUNK LID/BACK DOOR LOCK SWITCH, TRUNK LID/BACK DOOR UNLOCK SWITCH)
- Read the Data List according to the display on the GTS.
Body Electrical > Smart Key > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note Trunk Lid/Back Door Lock Switch License plate light assembly with back door opener switch (lock switch) OFF or ON OFF: License plate light assembly with back door opener switch (lock switch) not pressed
ON: License plate light assembly with back door opener switch (lock switch) pressed- Displays whether the license plate light assembly with back door opener switch (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 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 > Smart Key > Data List
Tester Display Trunk Lid/Back Door Lock Switch Trunk Lid/Back Door Unlock Switch 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
Result:
NG
See step 8
Result:
OK
See step 4
- Read the Data List according to the display on the GTS.
- CHECK KEY DIAGNOSTIC MODE
- Check the following antenna in key diagnostic mode.
Body Electrical > Smart Key > Utility
Tester Display Communication Check(Key Diag Mode) - Select either channel 1 or channel 2 and perform the key diagnostic mode inspection for each channel.
*1 Electrical Key Transmitter Sub-assembly *a 0.7 to 1 m (2.30 to 3.28 ft.) The illustrations shown are examples only.
- 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 wireless 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 Wireless buzzer does not sound A Wireless buzzer sounds B - Check the electrical key antenna (outside luggage compartment):
Result:
B
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to REMOVAL [07/2020 - ]
Result:
A
See step 5
- Check the following antenna in key diagnostic mode.
- CHECK HARNESS AND CONNECTOR (ELECTRICAL KEY ANTENNA (OUTSIDE LUGGAGE COMPARTMENT) - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))
- Disconnect the K6 certification ECU (smart key ECU assembly) connector.
- Disconnect the S10 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 K6-4 (CLG8) - S10-2 (ANTE8) Always Below 1 Ω K6-3 (CG8B) - S10-1 (CLGB) Always Below 1 Ω K6-4 (CLG8) or S10-2 (ANTE8) - Other terminals and body ground Always 10 kΩ or higher K6-3 (CG8B) or S10-1 (CLGB) - Other terminals and body ground Always 10 kΩ or higher - Reconnect the K6 certification ECU (smart key ECU assembly) connector.
Result
Proceed to OK NG
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
Result:
OK
See step 6
- INSPECT CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (OUTPUT TO ELECTRICAL KEY ANTENNA (OUTSIDE LUGGAGE COMPARTMENT))
- Using an oscilloscope, check the waveform.
*a Front view of wire harness connector
(to Electrical Key Antenna (Outside Luggage Compartment))*b Waveform 1 OK
Tester Connection Condition Tool Setting Specified Condition S10-1 (CLGB) - S10-2 (ANTE8) Procedure: - Ignition switch off
- Electrical key transmitter sub-assembly brought outside vehicle
- All doors closed
- License plate light assembly with back door opener switch off → on
5 V/DIV., 50 ms./DIV. Pulse generation
(See waveform 1)Result
Proceed to OK NG
Result:
OK
REPLACE ELECTRICAL KEY ANTENNA (OUTSIDE LUGGAGE COMPARTMENT). Refer to REMOVAL [07/2020 - 10/2022] , or refer to REMOVAL [10/2022 - ]
Result:
NG
See step 7
- Using an oscilloscope, check the waveform.
- CHECK ENTRY OPERATION
- Connect all connectors and check that the function operates normally.
Refer to OPERATION CHECK [07/2020 - ]
Result
Result Proceed to Entry function operates normally A Entry function does not operate normally B
Result:
A
END (CONNECTOR WAS NOT CONNECTED SECURELY)
Result:
B
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to REMOVAL [07/2020 - ]
- Connect all connectors and check that the function operates normally.
- CHECK HARNESS AND CONNECTOR (LICENSE PLATE LIGHT ASSEMBLY WITH BACK DOOR OPENER SWITCH - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) AND BODY GROUND)
- 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 K6-16 (TSW5) - T4-3 (UL) Always Below 1 Ω K6-17 (TSW6) - T4-1 (L) Always Below 1 Ω T4-2 (E) - Other terminals and body ground Always Below 1 Ω K6-16 (TSW5) or T4-3 (UL) - Other terminals and body ground Always 10 kΩ or higher K6-17 (TSW6) or T4-1 (L) - Other terminals and body ground Always 10 kΩ or higher Result
Proceed to OK NG
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
Result:
OK
See step 9
- INSPECT LICENSE PLATE LIGHT ASSEMBLY WITH BACK DOOR OPENER SWITCH
Refer to INSPECTION [07/2020 - ]
Result
Proceed to OK NG Result:
NG
REPLACE LICENSE PLATE LIGHT ASSEMBLY WITH BACK DOOR OPENER SWITCH. Refer to REMOVAL [07/2020 - ]
Result:
OK
See step 10
- CHECK ENTRY OPERATION
- Connect all connectors and check that the function operates normally.
Refer to OPERATION CHECK [07/2020 - ]
Result
Result Proceed to Entry function operates normally A Entry function does not operate normally B
Result:
A
END (CONNECTOR WAS NOT CONNECTED SECURELY)
Result:
B
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to REMOVAL [07/2020 - ]
- Connect all connectors and check that the function operates normally.