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
Note
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(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 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 by performing "DTC Output Confirmation Operation".
Check that there are no electrical key transmitter sub-assemblies in the vehicle.
Tech Tips
If the entry luggage compartment open functions 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.
Tester Display |
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Operation History |
PROCEDURE
READ VALUE USING GTS (TRUNK OPEN MODE)
Connect the GTS to the DLC3.
Turn the engine switch on (IG).
Turn the GTS on.
Enter the following menus: Body Electrical / Entry&Start / Data List.
Read the Data List according to the display on the GTS.
Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
---|---|---|---|---|
Trunk Open Mode | Entry luggage compartment open mode | OFF or ON | Customize setting displayed | - |
Tester Display |
---|
Trunk Open Mode |
Result | ||||||
---|---|---|---|---|---|---|
|
B |
PERFORM CUSTOMIZE SETTING (Proceed to Customize Parameters) Click here |
A |
CHECK LUGGAGE COMPARTMENT DOOR OPENER SYSTEM
Operate the luggage compartment door opening switch assembly in the vehicle and check that the luggage compartment door opens.
Result | ||||||
---|---|---|---|---|---|---|
|
B |
GO TO LUGGAGE COMPARTMENT DOOR OPENER SYSTEM Click here |
A |
READ VALUE USING GTS (TR/B-DOOR UNLOCK SW)
Connect the GTS to the DLC3.
Turn the engine switch on (IG).
Turn the GTS on.
Enter the following menus: Body Electrical / Entry&Start / Data List.
Read the Data List according to the display on the GTS.
Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
---|---|---|---|---|
Tr/B-Door Unlock SW | Luggage electrical key switch | OFF or ON | OFF: Luggage electrical key switch not pushed ON: Luggage electrical key switch pushed |
|
Tester Display |
---|
Tr/B-Door Unlock SW |
OK |
---|
The GTS display changes correctly in response to the operation of the luggage electrical key switch. |
Result | |||
---|---|---|---|
|
NG |
INSPECT LUGGAGE ELECTRICAL KEY SWITCH Click here |
OK |
CHECK WAVE ENVIRONMENT
*a | Approximately 0.3 m (0.984 ft.) |
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.
Tech Tips
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 | |||
---|---|---|---|
|
OK |
AFFECTED BY WAVE INTERFERENCE |
NG |
CHECK KEY DIAGNOSTIC MODE
Check the following antenna in key diagnostic mode.
Tester Display |
---|
Communication Check(Key Diag Mode) |
*a | 0.7 to 1.0 m (2.30 to 3.28 ft.) |
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.
Tech Tips
Select either channel 1 or channel 2 and inspect key diagnostic mode 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.
OK |
---|
Wireless buzzer sounds. |
Result | |||
---|---|---|---|
|
OK |
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
NG |
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - ELECTRICAL KEY ANTENNA (OUTSIDE LUGGAGE COMPARTMENT))
Disconnect the R8 certification ECU (smart key ECU assembly) connector.
Disconnect the W2 electrical key antenna (outside luggage compartment) connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Reconnect the R8 certification ECU (smart key ECU assembly) connector.
Reconnect the W2 electrical key antenna (outside luggage compartment) connector.
Result | |||
---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (OUTPUT TO ELECTRICAL KEY ANTENNA (OUTSIDE LUGGAGE COMPARTMENT))
*a | Component with harness connected (Certification ECU (Smart Key ECU Assembly)) |
*b | Waveform 1 |
Using an oscilloscope, check the waveform.
OK | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
NG |
REPLACE ELECTRICAL KEY ANTENNA (OUTSIDE LUGGAGE COMPARTMENT) Click here |
OK |
CHECK ENTRY LUGGAGE COMPARTMENT OPEN OPERATION
Connect all connectors and check that the entry luggage compartment open function operates.
Result | ||||||
---|---|---|---|---|---|---|
|
A |
END (CONNECTOR WAS NOT CONNECTED SECURELY) |
B |
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
INSPECT LUGGAGE ELECTRICAL KEY SWITCH
Remove the luggage electrical key switch.
Inspect the luggage electrical key switch.
Result | |||
---|---|---|---|
|
NG |
REPLACE LUGGAGE ELECTRICAL KEY SWITCH Click here |
OK |
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - LUGGAGE ELECTRICAL KEY SWITCH)
Disconnect the R8 certification ECU (smart key ECU assembly) connector.
Disconnect the W1 luggage electrical key switch connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
CHECK ENTRY LUGGAGE COMPARTMENT OPEN OPERATION
Connect all connectors and check that the entry luggage compartment open function operates.
Result | ||||||
---|---|---|---|---|---|---|
|
A |
END (CONNECTOR WAS NOT CONNECTED SECURELY) |
B |
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |