DESCRIPTION If the entry
lock and wireless door lock operations cannot be performed, the
electrical key and tire pressure monitoring system receiver assembly may
be malfunctioning, or there may be wave interference or problems in the
communication which is used for the entry and wireless function between
the electrical key and tire pressure monitoring system receiver
assembly and 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.
- Before replacing the certification ECU (smart key ECU assembly) or main
body ECU (multiplex network body ECU), refer to Precaution.
Click here
- After repair, confirm that no DTCs are output.
- Inspect the fuses for circuits related to this system before performing the following procedure.
- Check that there are no electrical key transmitter sub-assemblies in the vehicle.
- Before performing the inspection, check that DTC B1242 (wireless door lock control) is not output.
Click here
- When replacing the electrical key and tire pressure monitoring system
receiver assembly, read the transmitter IDs (tire pressure warning
system) stored in the old ECU using the Techstream and write them down
before removal.
Click here
- It is necessary to perform initialization (Click here
) after registration (Click here
) of the transmitter IDs into the electrical key and tire pressure
monitoring system receiver assembly if the electrical key and tire
pressure monitoring system receiver assembly has been replaced.
PROCEDURE |
1. | INSPECT BATTERY VOLTAGE |
(a) Measure the battery voltage. Standard Voltage: 11 to 14 V
HINT: It may be possible to tell whether the battery is discharged by operating the horn.
If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.
|
NEXT |
 | |
(a) Open the driver door using the mechanical key built into the electrical key transmitter sub-assembly.
(b) Check for DTCs. Body Electrical > Smart Key > Trouble Codes
|
Result | Proceed to | |
DTCs are not output | A | |
DTCs are output | B |
| B |
 | GO TO DIAGNOSTIC TROUBLE CODE CHART |
|
A | |
| |
| 3. |
CHECK DOOR AJAR WARNING | (a)
When the doors are locked by operating the entry lock function with all
doors closed, check that the door ajar warning operates. HINT: Be sure to check the following before performing the procedure.
- Engine switch is off.
- All the doors is close.
- The lock sensor is on or lock switch is pressed on the electrical key transmitter sub-assembly.
- Electrical key transmitter sub-assembly is in the vehicle exterior detection area.
|
Result | Proceed to | |
The wireless buzzer does not sound |
A | | The wireless buzzer sounds |
B |
| B |
| GO TO LIGHTING SYSTEM (Proceed to Door Courtesy Switch Circuit) |
|
A | |
| |
| 4. |
CHECK POWER DOOR LOCK CONTROL SYSTEM | (a)
When the door control switch on the multiplex network master switch
assembly is operated, check that the doors unlock and lock according to
the switch operation. Click here
|
Result | Proceed to | |
Power door lock function operates normally |
A | | Power door lock function does not operate normally |
B |
| B |
| GO TO POWER DOOR LOCK CONTROL SYSTEM |
|
A | |
| |
| 5. |
CHECK KEY DIAGNOSTIC MODE | (a) Check the following antennas in key diagnostic mode. Body Electrical > Smart Key > Utility
|
Tester Display | | Communication Check(Key Diag Mode) |
| (1) Check the electrical key antenna (for driver door): When
the electrical key transmitter sub-assembly is brought within 0.7 to 1 m
(2.30 to 3.28 ft.) of the front door outside handle assembly (for
driver door), 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.
|
 |
|
*a | 0.7 to 1 m (2.30 to 3.28 ft.) | | |
| (2) Check the electrical key antenna (for front passenger door):
When
the electrical key transmitter sub-assembly is brought within 0.7 to 1 m
(2.30 to 3.28 ft.) of the front door outside handle assembly (for front
passenger door), 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.
|
 |
|
*a | 0.7 to 1 m (2.30 to 3.28 ft.) | | |
| (3) Check the No. 1 indoor electrical key antenna assembly (front floor):
When the electrical key transmitter sub-assembly is at either inspection point, 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.
| |
| (4) Check the No. 1 indoor electrical key antenna assembly (rear floor):
When the electrical key transmitter sub-assembly is at either inspection point, 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.
| |
| (5) 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:
- 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.
| |
| (6) 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.
OK: Wireless buzzer sounds. |
 |
|
*a | 0.7 to 1 m (2.30 to 3.28 ft.) | | |
|
Result | Proceed to | |
Key diagnostic mode inspections fail for both channels |
A | | Key diagnostic mode inspections succeed for both channels |
B | | Key diagnostic mode inspection succeeds for only one of the channels |
C |
| B |
| GO TO STEP 18 |
| C |
| GO TO STEP 28 |
|
A | |
| |
| 6. |
CHECK WAVE ENVIRONMENT | (a)
Bring the electrical key transmitter sub-assembly near the electrical
key and tire pressure monitoring system receiver assembly and perform a
wireless operation 2 or more times*.
- *: When the wireless function is operated, channel 1 and 2 are used
alternately. If the first wireless operation is performed successfully
and the second wireless operation fails, wave interference may be
occurring for either channel.
HINT:
- When the electrical key transmitter sub-assembly is brought near the
electrical key and tire pressure monitoring system receiver assembly,
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 | Proceed to | |
Wireless function does not operate normally |
A | | Wireless function operates normally |
B |
| B |
| AFFECTED BY WAVE INTERFERENCE |
|
A | |
| |
| 7. |
CHECK TRANSMITTER BATTERY | (a) Check the transmitter battery level of the electrical key transmitter sub-assembly that was checked first.
(1)
Press and hold the lock switch of the electrical key transmitter
sub-assembly for 5 seconds and check the number of times that the LED
illuminates.
HINT:
- The electrical key transmitter sub-assembly sends voltage information to
the certification ECU (smart key ECU assembly) when it is being used.
"Yes" is displayed for the Data List item "Key Low Battery" when this
voltage information indicates 2.2 V or less.
Click here
- Even if the transmitter battery is depleted, it is still possible to
start the engine by holding the electrical key transmitter sub-assembly
near the engine switch, depressing the brake pedal and pressing the
engine switch.
|
Result | Proceed to | |
LED illuminates 3 times or more when switch is pressed and held |
A | | LED does not illuminate when switch is pressed and held |
B | | LED illuminates once or twice but not a third time |
C |
| B |
| GO TO STEP 17 |
| C |
| REPLACE TRANSMITTER BATTERY |
|
A | |
| |
| 8. |
CHECK ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY |
(a) Check if there is another electrical key transmitter sub-assembly available that is already registered to the vehicle.
|
Result | Proceed to | |
Another registered electrical key transmitter sub-assembly is not available |
A | | Another registered electrical key transmitter sub-assembly is available |
B |
| B |
| GO TO STEP 10 |
|
A | |
| |
| 9. |
ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY REGISTRATION (NEW ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY) |
(a) Register a new electrical key transmitter sub-assembly. Click here
|
NEXT | |
| |
| 10. |
CHECK ENTRY LOCK OPERATION | (a) Using another registered electrical key transmitter sub-assembly, check that the function operates normally.
|
Result | Proceed to | |
Entry function does not operate normally |
A | | Entry function operates normally |
B |
| B |
| END (ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY WAS DEFECTIVE) |
|
A | |
| |
| 11. |
CHECK
HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) -
ELECTRICAL KEY AND TIRE PRESSURE MONITORING SYSTEM RECEIVER AND BODY
GROUND) | (a) Disconnect the K10 certification ECU (smart key ECU assembly) connector.
(b) Disconnect the K11 electrical key and tire pressure monitoring system receiver assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
K10-18 (RCO) - K11-8 (+5) |
Always | Below 1 Ω | |
K10-19 (RDAM) - K11-2 (DATA) |
Always | Below 1 Ω | |
K10-20 (CSEL) - K11-6 (CSEL) |
Always | Below 1 Ω | |
K11-12 (GND) - Body ground |
Always | Below 1 Ω | |
K10-18 (RCO) or K11-8 (+5) - Other terminals and body ground |
Always | 10 kΩ or higher | |
K10-19 (RDAM) or K11-2 (DATA) - Other terminals and body ground |
Always | 10 kΩ or higher | |
K10-20 (CSEL) or K11-6 (CSEL) - Other terminals and body ground |
Always | 10 kΩ or higher |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 12. |
CHECK ENTRY LOCK OPERATION | (a) Connect all connectors and check that the function operates normally.
Click here
|
Result | Proceed to | |
Entry function does not operate normally |
A | | Entry function operates normally |
B |
| B |
| END (CONNECTOR WAS NOT CONNECTED SECURELY) |
|
A | |
| |
| 13. |
CHECK ELECTRICAL KEY AND TIRE PRESSURE MONITORING SYSTEM RECEIVER ASSEMBLY |
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
K11-12 (GND) - Body ground |
Always | Below 1 Ω |
| (b) Using an oscilloscope, check the waveform. OK: |
Tester Connection | Condition |
Tool Setting | Specified Condition | |
K11-2 (DATA) - K11-12 (GND) |
Procedure:
- Engine switch off
- All doors locked
- Electrical key transmitter sub-assembly not inside vehicle
- Electrical key transmitter sub-assembly brought outside detection area but kept inside wireless function operational area
- Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed
| 5 V/DIV., 500 ms/DIV. |
Below 1 V → Pulse generation (See waveform 1) | |
 |
|
*a | Component with harness connected (Electrical Key and Tire Pressure Monitoring System Receiver Assembly) | |
*b | Waveform 1 | |
*c | Before lock or unlock switch of electrical key transmitter sub-assembly pressed | |
*d | After lock or unlock switch of electrical key transmitter sub-assembly pressed | | |
| NG |
| REPLACE ELECTRICAL KEY AND TIRE PRESSURE MONITORING SYSTEM RECEIVER ASSEMBLY |
|
OK | |
| |
| 14. |
CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
| (a) Measure the voltage according to the value(s) in the table below.
Standard Voltage: |
Tester Connection | Condition |
Specified Condition | |
K11-1 (IG) - K11-12 (GND) |
Engine switch on (IG) |
10 to 16 V | |
K11-6 (CSEL) - K11-12 (GND) |
Procedure:
- Engine switch off
- All doors closed
| Below 1 V → Pulse generation | |
 |
|
*a | Component with harness connected (Electrical Key and Tire Pressure Monitoring System Receiver Assembly) | | |
| (b) Using an oscilloscope, check the waveform. OK: |
Tester Connection | Condition |
Tool Setting | Specified Condition | |
K11-8 (+5) - K11-12 (GND) |
Procedure:
- Engine switch off
- Electrical key transmitter sub-assembly brought outside detection area but kept inside wireless function operational area
- Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed
| 2 V/DIV., 500 ms/DIV. |
Pulse generation (See waveform 1) | |
 |
|
*a | Component with harness connected (Electrical Key and Tire Pressure Monitoring System Receiver Assembly) | |
*b | Waveform 1 | |
*c | Before lock or unlock switch of electrical key transmitter sub-assembly pressed | |
*d | After lock or unlock switch of electrical key transmitter sub-assembly pressed | | |
| NG |
| REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
|
OK | |
| |
| 15. |
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
(a) Replace the certification ECU (smart key ECU assembly) and perform registration again.
HINT:
- For replacement.
Click here
- For registration.
Click here
|
NEXT | |
| |
| 16. |
CHECK WIRELESS DOOR LOCK CONTROL SYSTEM |
(a) Check that the wireless function operates normally. Click here
|
Result | Proceed to | |
Wireless door lock function operates normally |
A | | Wireless door lock function does not operate normally |
B |
| A |
| END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) WAS DEFECTIVE) |
| B |
| REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
| 17. |
INSPECT TRANSMITTER BATTERY | (a) Inspect the transmitter battery.
Click here NOTICE: Do
not wrap the lead wire around a terminal, wedge it between terminals,
or solder it. The terminal may be deformed or damaged, and the
transmitter battery will not be able to be installed correctly.
| OK |
| REPLACE ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY |
| NG |
| REPLACE TRANSMITTER BATTERY |
(a) Perform registration of the B code.
Click here
|
NEXT | |
| |
| 19. |
CHECK ENTRY LOCK OPERATION | (a) After completing B code registration, check that the entry lock and unlock functions can be operated 2 times consecutively.
Click here
|
Result | Proceed to | |
Entry function does not operate normally |
A | | Entry function operates normally |
B |
| B |
| END (B CODE REGISTRATION FAILED) |
|
A | |
| |
| 20. |
READ VALUE USING TECHSTREAM (B CODE) | (a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG). (c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Smart Key / Data List.
(e) Read the Data List according to the display on the Techstream. Body Electrical > Smart Key > Data List
|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note | |
B Code | B code registration status |
No Regd or Regd | No Regd: B code not registered correctly
Regd: B code registered correctly |
- | Body Electrical > Smart Key > Data List
|
Result | Proceed to | |
"No Regd" is displayed on the Techstream |
A | | "Regd" is displayed on the Techstream |
B |
| B |
| REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
|
A | |
| |
| 21. |
READ VALUE USING TECHSTREAM (B CODE DIFFERENCE) |
(a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG).
(c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / Smart Key / Data List.
(e) Read the Data List according to the display on the Techstream. Body Electrical > Smart Key > Data List
|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note | |
B Code Difference | B code mismatch |
No or Yes | No: Communication normal
Yes: Communication malfunction |
- | Body Electrical > Smart Key > Data List
|
Tester Display | | B Code Difference |
|
Result | Proceed to | |
"No" is displayed on the Techstream |
A | | "Yes" is displayed on the Techstream |
B |
| B |
| REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
|
A | |
| |
| 22. |
CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
(a) Measure the voltage while checking the Data List on the Techstream.
(1) Connect the Techstream to the DLC3. (2) Turn the engine switch on (IG).
(3) Turn the Techstream on. (4) Enter the following menus: Body Electrical / Power Source Control / Data List.
(5) Read the Data List according to the display on the Techstream.
|
*a | Component with harness connected (Certification ECU (Smart Key ECU Assembly)) |
- | - | Body Electrical > Power Source Control > Data List
|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note | |
Power Supply Condition |
Power supply state | All OFF, ACC ON, IG ON or ST ON |
All OFF: Engine switch off ACC ON: Engine switch on (ACC)
IG ON: Engine switch on (IG) ST ON: Sending engine start request signal |
- | Body Electrical > Power Source Control > Data List
|
Tester Display | | Power Supply Condition |
Standard Voltage: |
Tester Connection | Condition |
Specified Condition | |
G40-17 (IG1D) - Body ground |
Engine switch off | Below 1 V | |
Engine switch on (ACC) |
Below 1 V | |
Engine switch on (IG) |
9 V or higher | |
G40-16 (ACCD) - Body ground |
Engine switch off | Below 1 V | |
Engine switch on (ACC) |
9 V or higher | |
Engine switch on (IG) |
9 V or higher |
| NG |
| REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
|
OK | |
| |
| 23. |
READ VALUE USING TECHSTREAM (ACC SW, IG SW) |
(a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG).
(c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / Main Body / Data List.
(e) Read the Data List according to the display on the Techstream. Body Electrical > Main Body > Data List
|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note | |
ACC SW | Engine switch status |
OFF or ON | OFF: Engine switch off
ON: Engine switch on (ACC) |
"ON" is also displayed when the engine switch is on (IG). | |
IG SW | Engine switch status |
OFF or ON | OFF: Engine switch off
ON: Engine switch on (IG) |
"OFF" is also displayed when the engine switch is on (ACC). | Body Electrical > Main Body > Data List
|
Tester Display | | ACC SW | |
IG SW | HINT: If
the certification ECU (smart key ECU assembly) misjudges for any reason
that the engine switch is on (IG) even though the engine switch is off,
the entry lock and unlock functions will be disabled.
|
Result | Proceed to | |
The main body ECU (multiplex network body ECU) judges properly that the power source is off when the engine switch is off |
A | | The
main body ECU (multiplex network body ECU) does not judge properly that
the power source is off when the engine switch is off |
B |
| B |
| TROUBLESHOOT MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
|
A | |
| |
| 24. |
CHECK HARNESS AND CONNECTOR (BODY GROUND, POWER SUPPLY) |
| (a) Disconnect the G40 certification ECU (smart key ECU assembly) connector. |
 |
|
*a | Front view of wire harness connector
(to Certification ECU (Smart Key ECU Assembly)) | | |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
G40-18 (E) - Body ground |
Always | Below 1 Ω |
(c) Measure the voltage according to the value(s) in the table below. Standard Voltage: |
Tester Connection | Condition |
Specified Condition | |
G40-15 (CUTB) - Body ground |
Always | 11 to 14 V |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 25. |
CHECK ENTRY LOCK OPERATION | (a) Disconnect and reconnect the certification ECU (smart key ECU assembly) connectors.
(b) Check that the function operates normally. Click here
|
Result | Proceed to | |
Entry function does not operate normally |
A | | Entry function operates normally |
B |
| B |
| END (CONNECTOR WAS NOT CONNECTED SECURELY) |
|
A | |
| |
| 26. |
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
(a) Replace the certification ECU (smart key ECU assembly) with a new one and perform registration again.
HINT:
- For replacement.
Click here
- For registration.
Click here
|
NEXT | |
| |
| 27. |
CHECK WIRELESS DOOR LOCK CONTROL SYSTEM |
(a) Check that the function operates normally. Click here
|
Result | Proceed to | |
Wireless door lock function operates normally |
A | | Wireless door lock function does not operate normally |
B |
| A |
| END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) WAS DEFECTIVE) |
| B |
| REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
| 28. |
CHECK WAVE ENVIRONMENT | (a)
Bring the electrical key transmitter sub-assembly near the electrical
key and tire pressure monitoring system receiver assembly and perform a
wireless operation 2 or more times*.
- *: When the wireless function is operated, channel 1 and 2 are used
alternately. If the first wireless operation is performed successfully
and the second wireless operation fails, wave interference may be
occurring for either channel.
HINT:
- When the electrical key transmitter sub-assembly is brought near the
electrical key and tire pressure monitoring system receiver assembly,
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 | Proceed to | |
Wireless function does not operate normally |
A | | Wireless function operates normally 1 or more times. |
B |
| B |
| AFFECTED BY WAVE INTERFERENCE |
|
A | |
| |
| 29. |
CHECK ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY |
(a) Check if there is another electrical key transmitter sub-assembly available that is already registered to the vehicle.
|
Result | Proceed to | |
Another registered electrical key transmitter sub-assembly is not available |
A | | Another registered electrical key transmitter sub-assembly is available |
B |
| B |
| GO TO STEP 31 |
|
A | |
| |
| 30. |
ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY REGISTRATION (NEW ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY) |
(a) Register a new electrical key transmitter sub-assembly. Click here
|
NEXT | |
| |
| 31. |
CHECK WAVE ENVIRONMENT | (a)
Bring another registered electrical key transmitter sub-assembly near
the electrical key and tire pressure monitoring system receiver assembly
and perform a wireless operation 2 or more times*.
- *: When the wireless function is operated, channel 1 and 2 are used
alternately. If the first wireless operation is performed successfully
and the second wireless operation fails, wave interference may be
occurring for either channel.
HINT:
- 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 | Proceed to | |
Wireless function does not operate normally |
A | | Wireless function operates normally 1 or more times. |
B |
| B |
| END (ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY WAS DEFECTIVE) |
|
A | |
| |
| 32. |
CHECK
HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) -
ELECTRICAL KEY AND TIRE PRESSURE MONITORING SYSTEM RECEIVER ASSEMBLY) |
(a) Disconnect the K11 electrical key and tire pressure monitoring system receiver assembly connector.
(b) Disconnect the K10 certification ECU (smart key ECU assembly) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
K11-6 (CSEL) - K10-20 (CSEL) |
Always | Below 1 Ω | |
K11-6 (CSEL) or K10-20 (CSEL) - Other terminals and body ground |
Always | 10 kΩ or higher |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 33. |
CHECK ENTRY LOCK OPERATION | (a) Connect all connectors and check that the function operates normally.
Click here
|
Result | Proceed to | |
Entry function does not operate normally |
A | | Entry function operates normally |
B |
| B |
| END (CONNECTOR WAS NOT CONNECTED SECURELY) |
|
A | |
| |
| 34. |
CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
| (a) Measure the voltage according to the value(s) in the table below.
Standard Voltage: |
Tester Connection | Condition |
Specified Condition | |
K11-6 (CSEL) - K11-12 (GND) |
Procedure:
- Engine switch off
- All doors closed
| Below 1 V → Pulse generation | |
 |
|
*a | Component with harness connected (Electrical Key and Tire Pressure Monitoring System Receiver Assembly) | | |
| NG |
| REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
|
OK | |
| |
| 35. |
CHECK ELECTRICAL KEY AND TIRE PRESSURE MONITORING SYSTEM RECEIVER ASSEMBLY |
(a) Enter key diagnostic mode and select the channel for which the wireless buzzer did not sound.
| (b) Using an oscilloscope, check the waveform. OK: |
Tester Connection | Condition |
Tool Setting | Specified Condition | |
K11-2 (DATA) - K11-12 (GND) |
Procedure:
- Engine switch off
- All doors locked
- Electrical key transmitter sub-assembly not inside vehicle
- Electrical key transmitter sub-assembly brought outside detection area but kept inside wireless function operational area
- Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed
| 5 V/DIV., 500 ms/DIV. |
Pulse generation (See waveform 1) |
HINT: Inspection
should be performed while the electrical key antenna check in key
diagnostic mode is being performed on the failed channel (the channel in
which the buzzer did not sound). |
 |
|
*a | Component with harness connected (Electrical Key and Tire Pressure Monitoring System Receiver Assembly) | |
*b | Waveform 1 | |
*c | Before lock or unlock switch of electrical key transmitter sub-assembly pressed | |
*d | After lock or unlock switch of electrical key transmitter sub-assembly pressed | | |
| NG |
| REPLACE ELECTRICAL KEY AND TIRE PRESSURE MONITORING SYSTEM RECEIVER ASSEMBLY |
|
OK | |
| |
| 36. |
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
(a) Replace the certification ECU (smart key ECU assembly) and perform registration again.
HINT:
- For replacement.
Click here
- For registration.
Click here
|
NEXT | |
| |
| 37. |
CHECK WIRELESS DOOR LOCK CONTROL SYSTEM |
(a) Check that the function operates normally. Click here
|
Result | Proceed to | |
Wireless door lock function operates normally |
A | | Wireless door lock function does not operate normally |
B |
| A |
| END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) WAS DEFECTIVE) |
| B |
| REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) | | 
