RM3660EC _58 Vehicle Interior _080747 THEFT DETERRENT / KEYLESS ENTRY _0600575 DIGITAL KEY SYSTEM J

THEFT DETERRENT / KEYLESS ENTRY  DIGITAL KEY SYSTEM  Digital Key cannot be Canceled  


DESCRIPTION

After the ignition switch was turned ON using the electrical key transmitter sub-assembly, it is possible to cancel the digital key system. If it is not possible to cancel the digital key system after the ignition switch was turned ON using the electrical key transmitter sub-assembly, there may be a malfunction in the communication system between the certification ECU (smart key ECU assembly) and the digital key ECU assembly.

WIRING DIAGRAM

B621852E39
4.156,0.854 5.375,1.042 1.219,0.188 10 false ECU-DCC NO. 2 5.365,0.625 5.677,0.823 0.313,0.198 10 false 1 5.552,0.719 5.802,0.917 0.25,0.198 10 false +B 5.552,1.885 6.01,2.083 0.458,0.198 10 false GND 5.563,1.313 6.177,1.51 0.615,0.198 10 false UART 5.313,1.167 5.625,1.365 0.313,0.198 10 false 23 1.708,1.156 2.021,1.354 0.313,0.198 10 false 17 1.26,1.313 1.875,1.51 0.615,0.198 10 false UAT2 0.906,3.406 3.052,3.604 2.146,0.198 10 false : UART Communication Line 0.104,2.563 0.479,2.781 0.375,0.219 10 false I196 5.208,2.573 6.052,2.854 0.844,0.281 10 false O175 5.208,2.729 7.156,2.927 1.948,0.198 10 false Digital Key ECU Assembly 5.292,1.781 5.604,1.979 0.313,0.198 10 false 10 2.385,0.719 4.073,0.938 1.688,0.219 10 false from Auxiliary Battery 0.094,2.729 3.01,2.927 2.917,0.198 10 false Certification ECU (Smart Key ECU Assembly)

CAUTION / NOTICE / HINT

NOTICE:
·

Before performing troubleshooting of the vehicle, refer to Precautions for Inspection or Registration to check for a cause of the malfunction which is not related to vehicle settings or vehicle components.

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>DIGITAL KEY SYSTEM>PRECAUTION

·

Make sure that no DTCs are output. If any DTCs are output, proceed to Diagnostic Trouble Code Chart.

·

Before replacing the certification ECU (smart key ECU assembly) or digital key ECU assembly, refer to Service Bulletin.



PROCEDURE

1.CHECK CUSTOMIZE SETTING USING GTS (Auto Entry Function by Digital key)
a.

Select the setting by referring to the table below.

Entry & Start
Tester Display Description Default Setting ECU
Auto Entry Function by Digital Key Function that enables or disables the digital key system Normal $00:Normal,$01:Cancel Certification ECU (Smart key ECU assembly)
50006 17

OK:

The digital key system can be canceled


Result:
Proceed to
OK
NG



OK

2.SYSTEM CHECK

NG

3.CHECK DIGITAL KEY ECU ASSEMBLY (TERMINAL UART)
2.SYSTEM CHECK
a.

Check the vehicle specification.

Result:
Result Proceed to
w/ Audio and Visual System A
w/ Navigation System B




A

GO TO AUDIO AND VISUAL SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING)

Click hereAudio / Visual / Telematics>AUDIO / VIDEO>AUDIO AND VISUAL SYSTEM (for 10.25 Inch Display)>HOW TO PROCEED WITH TROUBLESHOOTING


B

GO TO NAVIGATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING)

Click hereAudio / Visual / Telematics>NAVIGATION / MULTI INFO DISPLAY>NAVIGATION SYSTEM (for 10.25 Inch Display)>HOW TO PROCEED WITH TROUBLESHOOTING


3.CHECK DIGITAL KEY ECU ASSEMBLY (TERMINAL UART)
a.

Using an oscilloscope, check the waveform.

B621855C58
3.396,0.229 3.823,0.448 0.427,0.219 2.75,1.833 2.917,1.833 2.917,1.833 2.917,1.083 true 3.448,0.271 4.063,0.469 0.615,0.198 10 false O175 0.813,2.427 1.427,2.625 0.615,0.198 10 false *b 2.771,3.667 3.385,3.865 0.615,0.198 10 false *c 2.771,3.948 3.385,4.146 0.615,0.198 10 false *d 3.281,3.948 3.896,4.146 0.615,0.198 10 false *e 2.156,2.74 2.771,2.938 0.615,0.198 10 false *f 3.031,2.719 3.646,2.917 0.615,0.198 10 false *g 0.667,3.813 1.281,4.01 0.615,0.198 10 false GND 2.177,0.354 2.792,0.552 0.615,0.198 10 false *a 2.323,1.75 2.938,1.948 0.615,0.198 10 false UART
*a Component with harness connected
(Digital Key ECU Assembly) 		*b Waveform
*c Wakeup signal from digital key ECU assembly *d Approximately 15 ms.
*e 15 to 50 ms. *f Before door lock/unlock operation using digital key
*g After door lock/unlock operation using digital key - -


NOTICE:

The waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.


OK:
Tester Connection Condition Tool Setting Specified Condition
O175-23 (UART) - Body ground All of the following conditions are met:
·

Ignition switch off

·

Door lock/unlock operation has been not performed via digital key → performed


2 V/DIV., 20 ms./DIV. Pulse generation
(See waveform)



Result:
Result Proceed to
OK (Normal Waveform) A
NG (No Wakeup Signal) B
NG (Normal Waveform Not Output) C
NG (Stuck Low) D



A

4.REPLACE DIGITAL KEY ECU ASSEMBLY

B

REPLACE DIGITAL KEY ECU ASSEMBLY

C

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

D

8.INSPECT CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
4.REPLACE DIGITAL KEY ECU ASSEMBLY
a.

Replace the digital key ECU assembly with a new one.

HINT:

Refer to Service Bulletin.



Result:
Proceed to
NEXT



NEXT

5.REGISTER DIGITAL KEY CODE
5.REGISTER DIGITAL KEY CODE
a.

Register the digital key code to the digital key ECU assembly.

HINT:

Refer to Service Bulletin.



Result:
Proceed to
NEXT



NEXT

6.REGISTER NEW OWNER KEY
6.REGISTER NEW OWNER KEY
a.

Register the owner key using the original digital key.

HINT:

Refer to the digital key application.



Result:
Proceed to
NEXT



NEXT

7.CHECK CUSTOMIZE SETTING USING MULTI-DISPLAY
7.CHECK CUSTOMIZE SETTING USING MULTI-DISPLAY
a.

Use the electrical key transmitter sub-assembly and turn the ignition switch to ON.

NOTICE:

The digital key system can be canceled only after the ignition switch was turned ON using the electrical key transmitter sub-assembly.



b.

Use the multi-display and check the customize settings of the digital key system.

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>DIGITAL KEY SYSTEM>CUSTOMIZE PARAMETERS


OK:

The digital key system can be canceled


Result:
Proceed to
OK
NG



OK

END (DIGITAL KEY ECU ASSEMBLY WAS DEFECTIVE)

NG

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

8.INSPECT CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
a.

Disconnect the O175 digital key ECU assembly connector.


b.

Measure the voltage according to the value(s) in the table below.

Standard Voltage:
Tester Connection Condition Specified Condition
O175-23 (UART) - Body ground Ignition switch off 11 to 14 V



Result:
Proceed to
OK
NG



OK

REPLACE DIGITAL KEY ECU ASSEMBLY

NG

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)