DESCRIPTION If the entry
luggage compartment lock-in prevention function does not operate, there
may be a problem with the communication between the No. 1 indoor
electrical key antenna assembly (inside luggage compartment) and
electrical key transmitter sub-assembly, wave interference or a
malfunction in the certification ECU (smart key ECU assembly). WIRING DIAGRAM
 CAUTION / NOTICE / HINT
NOTICE:
- The smart key system (for Entry Function, Gasoline Model) uses the CAN
communication system. Inspect the communication function by following
How to Proceed with Troubleshooting. Troubleshoot the smart key system
(for Entry Function, Gasoline Model) after confirming that the
communication systems are functioning properly.
Click here 
- When using the Techstream with the engine switch off, connect the
Techstream to the DLC3 and turn a courtesy light switch on and off at
intervals of 1.5 seconds or less until communication between the
Techstream and the vehicle begins. Then select the vehicle type under
manual mode and enter the following menus: Body Electrical / Smart Key.
While using the Techstream, periodically turn a courtesy light switch on
and off at intervals of 1.5 seconds or less to maintain communication
between the Techstream and the vehicle.
- Check that there are no electrical key transmitter sub-assemblies in the vehicle.
- Before replacing the certification ECU (smart key ECU assembly), refer to smart key system (for Entry Function) Precaution.
Click here
- After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".
PROCEDURE |
1. | CHECK ENTRY LUGGAGE COMPARTMENT OPEN OPERATION |
(a) Connect all connectors and check that the entry luggage compartment open function operates.
Click here
|
Result | Proceed to | |
Luggage open function operates normally |
A | | Luggage open function does not operate normally |
B |
| B |
 |
GO TO OTHER PROBLEM (Proceed to Luggage Compartment Door Entry Unlock
Function does not Operate when Key is Outside Luggage Compartment) |
|
A |
 | |
| 2. |
CHECK WAVE ENVIRONMENT |
| (a)
Bring the electrical key transmitter sub-assembly near the No. 1 indoor
electrical key antenna assembly (inside luggage compartment), and check
that the entry luggage compartment lock-in prevention function
operates. NOTICE: In order to
prevent the electrical key transmitter sub-assembly from being locked
inside the vehicle, perform this inspection with the window of a door
open.
HINT:
- Communication may not be possible if the electrical key transmitter
sub-assembly is within 0.2 m (0.656 ft.) of the No. 1 indoor electrical
key antenna assembly (inside luggage compartment).
- When the electrical key transmitter sub-assembly is brought near the No.
1 indoor electrical key antenna assembly (inside luggage compartment),
the possibility of wave interference decreases, and it can be determined
if wave interference is causing the problem symptom.
- If the operation check is normal, 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 | Proceed to | |
Entry functions does not operate normally |
A | | Entry functions operate normally |
B |
| B |
| AFFECTED BY WAVE INTERFERENCE |
|
A | |
| |
| 3. |
CHECK KEY DIAGNOSTIC MODE | (a) Check the following antenna in key diagnostic mode. Body Electrical > Smart Key > Utility
|
Tester Display | | Communication Check(Key Diag Mode) |
| (b) Select either channel 1 or channel 2 and inspect key diagnostic mode for each channel.
(1) Check the No. 1 indoor electrical key antenna assembly (inside luggage compartment):
When the electrical key transmitter sub-assembly is at either inspection point, check that the wireless buzzer sounds.
HINT:
- If the buzzer sounds, it can be determined that the No. 1 indoor
electrical key antenna assembly (inside luggage compartment) is
operating normally.
- 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 | Proceed to | |
Wireless buzzer does not sound |
A | | Wireless buzzer sounds |
B |
| B |
| REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
|
A | |
| |
| 4. |
CHECK
HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - NO.
1 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (INSIDE LUGGAGE COMPARTMENT)) |
(a) Disconnect the K10 certification ECU (smart key ECU assembly) connector.
(b) Disconnect the K13 No. 1 indoor electrical key antenna assembly (inside luggage compartment) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
K10-11 (CLG7) - K13-1 (ANTE7) |
Always | Below 1 Ω | |
K10-10 (CG7B) - K13-3 (CLGB) |
Always | Below 1 Ω | |
K10-11 (CLG7) or K13-1 (ANTE7) - Other terminals and body ground |
Always | 10 kΩ or higher | |
K10-10 (CG7B) or K13-3 (CLGB) - Other terminals and body ground |
Always | 10 kΩ or higher |
(d) Reconnect the K10 certification ECU (smart key ECU assembly) connector.
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 5. |
CHECK
CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (OUTPUT TO NO. 1 INDOOR
ELECTRICAL KEY ANTENNA ASSEMBLY (INSIDE LUGGAGE COMPARTMENT)) |
| (a) Using an oscilloscope, check the wave form. OK: |
Tester Connection | Condition |
Tool Setting | Specified Condition | |
K13-1 (ANTE7) - K13-3 (CLGB) |
Procedure:
- Door is closed
- Engine switch off
- Electrical key transmitter sub-assembly not inside vehicle
- Driver door lock sensor touched
| 2 V/DIV., 500 ms/DIV. |
Pulse generation (See waveform 1) | |
 |
|
*a | Front view of wire harness connector
(to No. 1 Indoor Electrical Key Antenna Assembly (Inside Luggage compartment)) | |
*b | Waveform 1 | |
*c | Driver door lock sensor not touched | |
*d | Driver door lock sensor touched | | |
| NG |
| REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
|
OK | |
| |
| 6. |
REPLACE NO. 1 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (INSIDE LUGGAGE COMPARTMENT) |
(a) Replace the No. 1 indoor electrical key antenna assembly (inside luggage compartment).
Click here
|
NEXT | |
| |
| 7. |
CHECK KEY LOCK-IN PREVENTION FUNCTION |
(a) Check that the entry luggage compartment lock-in prevention function operates normally.
Click here OK: Entry luggage compartment lock-in prevention function operates normally.
| OK |
| END (NO. 1 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (INSIDE LUGGAGE COMPARTMENT) WAS DEFECTIVE) |
| NG |
| REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) | |
