RM38T0EC _58 Vehicle Interior _115230 THEFT DETERRENT / KEYLESS ENTRY _0606513 DIGITAL KEY SYSTEM U

THEFT DETERRENT / KEYLESS ENTRY  DIGITAL KEY SYSTEM  TERMINALS OF ECU  


HINT:

Make sure to cancel power saving mode when measuring the standard values.

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CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


E517951E01
3.375,0.406 3.792,0.656 0.417,0.25 4.802,0.406 5.219,0.656 0.417,0.25 1.969,0.417 2.385,0.667 0.417,0.25 4.865,0.458 5.198,0.656 0.333,0.198 10 false I222 3.427,0.458 3.813,0.708 0.385,0.25 10 false O200 2.052,0.469 2.427,0.667 0.375,0.198 10 false I223

a.

Disconnect the I223 and I222 certification ECU (smart key ECU assembly) connectors.


b.

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

Tester Connection Terminal Description Condition Specified Condition
I222-6 (+B) - I222-29 (E) Power source Ignition switch off 11 to 14 V
I223-22 (CUTB) - Body ground Dark current cut pin* Ignition switch off 11 to 14 V
I222-29 (E) - Body ground GND Always Below 1 Ω

*: In order to prevent the vehicle auxiliary battery from being depleted when the vehicle is shipped long distances, a fuse that cuts unnecessary electrical load while the vehicle is being shipped is installed in the circuit. If the fuse is removed, the circuit becomes open. If the fuse that is between the vehicle auxiliary battery and terminal CUTB is removed and the circuit is open, the certification ECU (smart key ECU assembly) changes to a certain control mode (example: the transmission of radio waves every 0.25 seconds, which form the detection area, stops).



c.

Connect the I223 and I222 certification ECU (smart key ECU assembly) connectors.


d.

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

Tester Connection Terminal Description Condition Specified Condition
I222-17 (UAT2) - I222-29 (E) UART communication line All of the following conditions are met:
·

Ignition switch off

·

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

·

Digital key is not being operated


11 to 14 V



DIGITAL KEY ECU ASSEMBLY


B621863N26
3.313,0.333 3.729,0.583 0.417,0.25 3.375,0.375 3.802,0.594 0.427,0.219 10 false O224

a.

Disconnect the O224 Digital key ECU assembly connector.


b.

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

Tester Connection Terminal Description Condition Specified Condition
O224-1 (+B) - O224-10 (GND) Power source Ignition switch off 11 to 14 V
O224-10 (GND) - Body ground GND Always Below 1 Ω


c.

Connect the O224 Digital key ECU assembly connector.


d.

Measure the voltage and check for pulses according to the value(s) in the table below.

Tester Connection Terminal Description Condition Specified Condition
O224-4 (PWI1) - O224-10 (GND) BLE digital key receiver power source Digital key is in BLE connection range. 8.5 to 14 V
O224-12 (PWO1) - O224-10 (GND) BLE digital key receiver power source Digital key is in BLE connection range. 8.5 to 14 V
O224-14 (LIN1) - O224-10 (GND) LIN communication line Digital key is in driver door digital key detection range. Pulse generation
O224-15 (LIN2) - O224-10 (GND) LIN communication line Digital key is in front passenger door digital key detection range. Pulse generation
O224-20 (LIN3) - O224-10 (GND) LIN communication line Digital key is in back door digital key detection range. Pulse generation
O224-21 (LIN4) - O224-10 (GND) LIN communication line Digital key is in guaranteed in-vehicle operating range . Pulse generation
O224-23 (UART) - O224-10 (GND) UART communication line All of the following conditions are met:
·

Ignition switch off

·

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


Pulse generation
(See waveform)


e.

Using an oscilloscope, check the waveform of the ECU.

NOTICE:

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


i.
B621864C02
0.135,1.552 0.594,1.75 0.458,0.198 10 false GND 1.646,1.708 2.104,1.906 0.458,0.198 10 false *c 2.229,1.719 2.688,1.917 0.458,0.198 10 false *d 1.146,0.26 1.604,0.458 0.458,0.198 10 false *a 1.792,0.26 2.25,0.458 0.458,0.198 10 false *b
*a Before door lock/unlock operation using digital key
*b After door lock/unlock operation using digital key
*c Approximately 15 ms.
*d 15 to 50 ms.


Waveform

Item Content
Tester Connection O224-23 (UART) - O224-10 (GND)
Tool Setting 2 V/DIV., 20 ms./DIV.
Condition All of the following conditions are met:
·

Ignition switch off

·

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