THEFT DETERRENT / KEYLESS ENTRY  SMART ENTRY AND START SYSTEM(for Entry Function)  Room Oscillator does not Recognize Key  


DESCRIPTION

If code verification cannot be performed in the vehicle interior, there may be problems with the communication between the vehicle (indoor electrical key antenna assembly (front floor) or (rear floor)) and electrical key transmitter sub-assembly, or the certification ECU (smart key ECU assembly) may be malfunctioning. When the electrical key transmitter sub-assembly is brought into the vehicle, verification of the key ID code transmitted from the electrical key transmitter sub-assembly and the key ID code stored in the certification ECU (smart key ECU assembly) is performed. If verification cannot be performed or the codes do not match, the engine switch cannot be turned on (IG) and the engine cannot be started.

When a door is unlocked and the electrical key transmitter sub-assembly is brought into the vehicle, the certification ECU (smart key ECU assembly) activates the indoor electrical key antenna assembly which transmits radio waves to detect the electrical key transmitter sub-assembly. If the electrical key transmitter sub-assembly recognizes that it is in the detection area, it responds with the key ID code. This information is received by the indoor electrical key antenna and then sent to the certification ECU (smart key ECU assembly).

WIRING DIAGRAM

B281170E70
5.406,0.698 5.813,0.865 0.406,0.167 10 false CG5B 2.021,0.656 2.427,0.823 0.406,0.167 10 false CLGB 2.51,0.615 2.646,0.781 0.135,0.167 10 false 3 1.979,1.063 2.521,1.25 0.542,0.188 10 false ANTE5 0.51,1.313 1.417,1.5 0.906,0.188 10 false L68 0.5,1.5 2.771,1.844 2.271,0.344 10 false No. 1 Indoor Electrical Key Antenna Assembly (Front Floor) 2.51,0.99 2.646,1.156 0.135,0.167 10 false 1 5.125,0.51 5.24,0.677 0.115,0.167 10 false 2 5.406,1.094 5.813,1.26 0.406,0.167 10 false CLG5 5.125,0.896 5.24,1.063 0.115,0.167 10 false 3 5.396,2.479 5.802,2.646 0.406,0.167 10 false CG6B 2.052,2.479 2.458,2.646 0.406,0.167 10 false CLGB 2.51,2.406 2.646,2.573 0.135,0.167 10 false 3 1.969,2.854 2.49,3.052 0.521,0.198 10 false ANTE6 0.875,3.115 1.156,3.281 0.281,0.167 10 false L67 0.875,3.281 3.146,3.625 2.271,0.344 10 false No. 2 Indoor Electrical Key Antenna Assembly (Rear Floor) 2.51,2.771 2.646,2.938 0.135,0.167 10 false 1 5.104,2.302 5.313,2.469 0.208,0.167 10 false 10 5.406,2.844 5.813,3.01 0.406,0.167 10 false CLG6 5.083,2.677 5.292,2.844 0.208,0.167 10 false 11 5.021,3.521 6.656,3.885 1.635,0.365 10 false Certification ECU (Smart Key ECU Assembly) 5,2.479 5.385,2.708 0.385,0.229 10 false E109 5.021,0.698 5.5,0.917 0.479,0.219 10 false E110 5.021,1.073 5.5,1.292 0.479,0.219 10 false E110 5.01,2.854 5.396,3.083 0.385,0.229 10 false E109

CAUTION / NOTICE / HINT

NOTICE:
·

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.

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>SMART ENTRY AND START SYSTEM(for Entry Function)>HOW TO PROCEED WITH TROUBLESHOOTING

·

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.

·

Before replacing the certification ECU (smart key ECU assembly), refer to smart entry and start system (for Entry Function) Precaution.

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>SMART ENTRY AND START SYSTEM(for Entry Function)>PRECAUTION

·

After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".

·

The indoor electrical key antenna assemblies each have an antenna coil between each two CLG terminals.

·

The door control with receiver ECU assembly is also related to interior verification.



PROCEDURE

1.CHECK ENTRY DOOR LOCK OPERATION
a.

Check that the entry lock and unlock functions operate for each door.

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>SMART ENTRY AND START SYSTEM(for Entry Function)>OPERATION CHECK

HINT:

If the door control with receiver ECU assembly is defective, code verification does not begin in the cabin and the entry lock and unlock functions do not operate.


OK:

All door entry lock and unlock functions operate normally.



Result:
Proceed to
OK
NG



OK

2.CHECK PUSH-BUTTON START FUNCTION

NG

GO TO OTHER PROBLEM (Proceed to Problem Symptoms Table)

2.CHECK PUSH-BUTTON START FUNCTION
a.
B290557C02
0.917,0.25 1.25,0.25 1.25,0.25 1.25,0.5 false 2.5,0.417 2.167,0.417 2.167,0.417 2.167,0.667 false 0.75,0.146 1.063,0.302 0.313,0.156 10 false *1 2.594,0.323 2.906,0.479 0.313,0.156 10 false *2
*1 Engine Switch
*2 Electrical Key Transmitter Sub-assembly


Remove the transmitter battery of the electrical key transmitter sub-assembly.

Click hereVehicle Interior>DOOR LOCK>TRANSMITTER BATTERY(w/ Smart Entry and Start System)>REPLACEMENT


b.

With the brake pedal*1 or clutch pedal*2 depressed, face the logo side of the electrical key transmitter sub-assembly towards the engine switch, hold the transmitter near the engine switch and then press the engine switch.

·

*1: except Manual Transaxle

·

*2: for Manual Transaxle



c.

When operating the engine switch, check whether the engine starts.

HINT:
·

When the electrical key transmitter sub-assembly cannot be verified even though it is inside the detection area, the engine start check can be performed by removing the transmitter battery from the electrical key transmitter sub-assembly and holding the electrical key transmitter sub-assembly near the engine switch.

·

If the engine cannot be started when performing this inspection, the certification ECU (smart key ECU assembly), ID code box (immobiliser code ECU) may be malfunctioning.



OK:

Engine starts.



Result:
Proceed to
OK
NG



OK

3.CHECK WAVE ENVIRONMENT

NG

GO TO SMART ENTRY AND START SYSTEM (FOR START FUNCTION)

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>SMART ENTRY AND START SYSTEM(for Start Function)>HOW TO PROCEED WITH TROUBLESHOOTING


3.CHECK WAVE ENVIRONMENT
a.

Install the transmitter battery to the electrical key transmitter sub-assembly.

Click hereVehicle Interior>DOOR LOCK>TRANSMITTER BATTERY(w/ Smart Entry and Start System)>REPLACEMENT


b.

Bring the electrical key transmitter sub-assembly near the No. 1 indoor electrical key antenna assembly (front floor) and perform an smart entry and start system check.

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>SMART ENTRY AND START SYSTEM(for Entry Function)>OPERATION CHECK

NOTICE:

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 (front floor).



c.

Bring the electrical key transmitter sub-assembly near the No. 2 indoor electrical key antenna assembly (rear floor) and perform an smart entry and start system check.

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>SMART ENTRY AND START SYSTEM(for Entry Function)>OPERATION CHECK

HINT:

Check that the customize setting "Ignition Available Area" is set to "All".


NOTICE:

Communication may not be possible if the electrical key transmitter sub-assembly is within 0.2 m (0.656 ft.) of the No. 2 indoor electrical key antenna assembly (rear floor).



HINT:
·

As the effect of wave interference decreases by moving the electrical key transmitter sub-assembly close to each indoor electrical key antenna assembly, it may be possible to check whether wave interference is the cause of the problem.

·

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
System cannot be operated A
System can be operated B



A

4.CHECK KEY DIAGNOSTIC MODE

B

AFFECTED BY WAVE INTERFERENCE

4.CHECK KEY DIAGNOSTIC MODE
a.

Check the following antennas in key diagnostic mode.

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>SMART ENTRY AND START SYSTEM(for Entry Function)>OPERATION CHECK


b.

Select either channel 1 or channel 2 and perform key diagnostic mode inspection for each channel.

HINT:

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.


i.
B349375C01
1.771,0.833 2.365,0.24 2.365,0.24 2.813,0.24 false 0.635,0.833 2.354,0.24 false 2.896,0.156 3.208,0.354 0.313,0.198 10 false *a
*a Inspection Point


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 door lock buzzer sounds.

Body Electrical > Entry&Start > Utility
Tester Display
Communication Check(Key Diag Mode)
50005 125 143

ii.
B353974C03
1.76,0.698 2.208,0.167 false 0.594,0.708 2.219,0.156 2.219,0.156 2.427,0.156 false 2.49,0.083 2.802,0.292 0.313,0.208 10 false *a
*a Inspection Point


Check the No. 2 indoor electrical key antenna assembly (rear floor).

When the electrical key transmitter sub-assembly is at either inspection point, check that the wireless door lock buzzer sounds.

Body Electrical > Entry&Start > Utility
Tester Display
Communication Check(Key Diag Mode)
50005 125 143
OK:

Wireless door lock buzzer sounds.




Result:
Result Proceed to
Front floor operation check failed A
Rear floor operation check failed B
All operation checks are normal C



A

5.CHECK HARNESS AND CONNECTOR (NO. 1 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (FRONT FLOOR) - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))

B

9.CHECK HARNESS AND CONNECTOR (NO. 2 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (REAR FLOOR) - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))

C

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

5.CHECK HARNESS AND CONNECTOR (NO. 1 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (FRONT FLOOR) - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))
a.

Disconnect the L68 No. 1 indoor electrical key antenna assembly (front floor) connector.


b.

Disconnect the E110 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
L68-1 (ANTE5) - E110-3 (CLG5) Always Below 1 Ω
L68-3 (CLGB) - E110-2 (CG5B) Always Below 1 Ω
L68-1 (ANTE5) or E110-3 (CLG5) - Body ground Always 10 kΩ or higher
L68-3 (CLGB) or E110-2 (CG5B) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

6.CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (OUTPUT TO NO. 1 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (FRONT FLOOR))

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (OUTPUT TO NO. 1 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (FRONT FLOOR))
a.
B250988C50
0.583,0.531 0.958,0.802 0.375,0.271 1.135,1.219 1.323,1.219 1.323,1.219 1.5,0.885 false 2.333,1.208 2.146,1.208 2.146,1.208 1.906,0.875 false 0.063,0.073 0.323,0.323 0.26,0.25 10 false *a 0.771,3.156 1.156,3.354 0.385,0.198 10 false *c 1.719,3.167 2.083,3.396 0.365,0.229 10 false *d 0.073,1.406 0.354,1.677 0.281,0.271 10 false *b 0.083,2.292 0.521,2.5 0.438,0.208 10 false GND 0.563,1.135 1.167,1.375 0.604,0.24 10 false ANTE5 2.375,1.125 2.917,1.302 0.542,0.177 10 false CLGB 0.656,0.563 1.021,0.76 0.365,0.198 10 false L68
*a Front view of wire harness connector
(to No. 1 Indoor Electrical Key Antenna Assembly (Front Floor))
*b Waveform
*c Door open
*d After approximately 30 seconds after door closed


Disconnect the L68 No. 1 indoor electrical key antenna assembly (front floor) connector.


b.

Connect the E110 certification ECU (smart key ECU assembly) connector.


c.

Using an oscilloscope, check the waveform.

OK:
Tester Connection Condition Tool Setting Specified Condition
L68-1 (ANTE5) - L68-3 (CLGB) Procedure:
1.

Engine switch off

2.

Electrical key transmitter sub-assembly not inside vehicle

3.

Door opened

4.

Door closed

5.

Within 30 seconds


2 V/DIV., 500 ms/DIV. Pulse generation
(See waveform)



Result:
Proceed to
OK
NG



OK

7.REPLACE NO. 1 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (FRONT FLOOR)

NG

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

7.REPLACE NO. 1 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (FRONT FLOOR)
a.

Temporarily replace the No. 1 indoor electrical key antenna assembly (front floor) with a new or known good one.

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>ELECTRICAL KEY OSCILLATOR(for Front Floor)>REMOVAL


Result:
Proceed to
NEXT



NEXT

8.CHECK KEY DIAGNOSTIC MODE
8.CHECK KEY DIAGNOSTIC MODE
a.

Check the following antenna in key diagnostic mode.

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>SMART ENTRY AND START SYSTEM(for Entry Function)>OPERATION CHECK


b.
B349375C01
1.771,0.833 2.365,0.24 2.365,0.24 2.813,0.24 false 0.635,0.833 2.354,0.24 false 2.896,0.156 3.208,0.354 0.313,0.198 10 false *a
*a Inspection Point


Select either channel 1 or channel 2 and perform key diagnostic mode inspection for each channel.

Body Electrical > Entry&Start > Utility
Tester Display
Communication Check(Key Diag Mode)
50005 125 143
HINT:

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.


i.

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 door lock buzzer sounds.

OK:

Wireless door lock buzzer sounds.




Result:
Proceed to
OK
NG



OK

END (NO. 1 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (FRONT FLOOR) WAS DEFECTIVE)

NG

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

9.CHECK HARNESS AND CONNECTOR (NO. 2 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (REAR FLOOR) - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))
a.

Disconnect the L67 No. 2 indoor electrical key antenna assembly (rear floor) connector.


b.

Disconnect the E109 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
L67-1 (ANTE6) - E109-11 (CLG6) Always Below 1 Ω
L67-3 (CLGB) - E109-10 (CG6B) Always Below 1 Ω
L67-1 (ANTE6) or E109-11 (CLG6) - Body ground Always 10 kΩ or higher
L67-3 (CLGB) or E109-10 (CG6B) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

10.CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (OUTPUT TO NO. 2 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (REAR FLOOR))

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

10.CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (OUTPUT TO NO. 2 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (REAR FLOOR))
a.
B250988C51
0.75,0.51 1.104,0.76 0.354,0.25 1.135,1.219 1.323,1.219 1.323,1.219 1.5,0.885 false 2.333,1.208 2.146,1.208 2.146,1.208 1.906,0.875 false 0.094,0.094 0.354,0.344 0.26,0.25 10 false *a 0.771,3.177 0.979,3.375 0.208,0.198 10 false *c 1.719,3.177 1.927,3.375 0.208,0.198 10 false *d 0.104,1.427 0.688,1.875 0.583,0.448 10 false *b 0.104,2.292 0.542,2.5 0.438,0.208 10 false GND 0.635,1.135 1.24,1.375 0.604,0.24 10 false ANTE6 2.396,1.125 2.938,1.302 0.542,0.177 10 false CLGB 0.823,0.552 1.188,0.75 0.365,0.198 10 false L67
*a Front view of wire harness connector
(to No. 2 Indoor Electrical Key Antenna Assembly (Rear floor))
*b Waveform
*c Door open
*d After approximately 30 seconds after door closed


Disconnect the L67 No. 2 indoor electrical key antenna assembly (rear floor) connector.


b.

Connect the E109 certification ECU (smart key ECU assembly) connector.


c.

Using an oscilloscope, check the waveform.

OK:
Tester Connection Condition Tool Setting Specified Condition
L67-1 (ANTE6) - L67-3 (CLGB) Procedure:
1.

Engine switch off

2.

Electrical key transmitter sub-assembly not inside vehicle

3.

Door opened

4.

Door closed

5.

Within 30 seconds


2 V/DIV., 500 ms/DIV. Pulse generation
(See waveform)



Result:
Proceed to
OK
NG



OK

11.REPLACE NO. 2 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (REAR FLOOR)

NG

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

11.REPLACE NO. 2 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (REAR FLOOR)
a.

Temporarily replace the No. 2 indoor electrical key antenna assembly (rear floor) with a new or known good one.

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>ELECTRICAL KEY OSCILLATOR(for Center Floor)>REMOVAL


Result:
Proceed to
NEXT



NEXT

12.CHECK KEY DIAGNOSTIC MODE
12.CHECK KEY DIAGNOSTIC MODE
a.

Check the following antenna in key diagnostic mode.

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>SMART ENTRY AND START SYSTEM(for Entry Function)>OPERATION CHECK


b.
B353974C01
1.76,0.698 2.208,0.167 false 0.594,0.708 2.219,0.156 2.219,0.156 2.427,0.156 false 2.49,0.083 2.802,0.292 0.313,0.208 10 false *a
*a Inspection Point


Select either channel 1 or channel 2 and perform key diagnostic mode inspection for each channel.

Body Electrical > Entry&Start > Utility
Tester Display
Communication Check(Key Diag Mode)
50005 125 143
HINT:

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.


i.

Check the No. 2 indoor electrical key antenna assembly (rear floor). When the electrical key transmitter sub-assembly is at either inspection point, check that the wireless door lock buzzer sounds.

OK:

Wireless door lock buzzer sounds.




Result:
Proceed to
OK
NG



OK

END (NO. 2 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (REAR FLOOR) WAS DEFECTIVE)

NG

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)