RM38T0EC _58 Vehicle Interior _115226 DOOR LOCK _0510941 WIRELESS DOOR LOCK CONTROL SYSTEM(w/ Smart Entry and Start System) U

DOOR LOCK  WIRELESS DOOR LOCK CONTROL SYSTEM(w/ Smart Entry and Start System)  TERMINALS OF ECU  


CHECK POWER DISTRIBUTION BOX ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)


E469803C10
4.417,3.24 4.802,3.469 0.385,0.229 2.281,4.5 2.667,4.729 0.385,0.229 4.594,4.5 4.979,4.729 0.385,0.229 1.146,6.104 1.531,6.333 0.385,0.229 3,6.104 3.385,6.333 0.385,0.229 4.25,6.104 4.635,6.333 0.385,0.229 3.438,7.781 3.823,8.01 0.385,0.229 2.135,1.385 2.521,1.615 0.385,0.229 2.135,1.771 2.521,2 0.385,0.229 2.292,3.24 2.677,3.469 0.385,0.229 3.792,0.292 4.177,0.521 0.385,0.229 5.26,6.104 5.646,6.333 0.385,0.229 6.26,6.104 6.646,6.333 0.385,0.229 2.01,0.698 2.333,0.427 false 1.396,0.521 1.719,0.25 false 0.948,1.875 1.26,2.073 0.313,0.198 10 false 8K 0.948,2.385 1.26,2.583 0.313,0.198 10 false 8H 0.958,1.083 1.271,1.281 0.313,0.198 10 false 8F 0.958,1.583 1.271,1.781 0.313,0.198 10 false 8E 2.229,1.417 2.688,1.615 0.458,0.198 10 false I86 2.229,1.813 2.688,2.01 0.458,0.198 10 false I85 3.854,0.313 4.24,0.5 0.385,0.188 10 false MB 2.396,3.26 2.865,3.469 0.469,0.208 10 false I85 4.521,3.26 4.979,3.458 0.458,0.198 10 false I86 3.104,6.135 3.563,6.333 0.458,0.198 10 false 8E 3.51,7.802 3.969,8 0.458,0.198 10 false MB 2.385,0.354 2.698,0.552 0.313,0.198 10 false *2 6.021,1.719 6.333,1.917 0.313,0.198 10 false 8B 6.031,1.135 6.344,1.333 0.313,0.198 10 false 8C 0.948,2.135 1.26,2.333 0.313,0.198 10 false 8J 4.688,4.521 5,4.719 0.313,0.198 10 false 8B 2.375,4.531 2.688,4.729 0.313,0.198 10 false 8C 1.26,6.135 1.573,6.333 0.313,0.198 10 false 8F 4.344,6.125 4.656,6.323 0.313,0.198 10 false 8K 5.344,6.125 5.656,6.323 0.313,0.198 10 false 8J 6.365,6.125 6.677,6.323 0.313,0.198 10 false 8H 1.771,0.146 2.083,0.344 0.313,0.198 10 false *1
*1 Power Distribution Box Assembly *2 Main body ECU (multiplex network body ECU)


a.

Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU>REMOVAL


b.

Reconnect the power distribution box assembly connector.


c.

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

HINT:

Measure the values on the wire harness side with the connectors connected.


Terminal No. (Symbol) Terminal Description Condition Specified Condition
MB-13 (GND1) - Body ground Ground Always Below 1 Ω
MB-26 (BECU) - Body ground Auxiliary battery power supply Ignition switch off 11 to 14 V
MB-27 (IGR) - Body ground IG power supply Ignition switch ON 11 to 14 V


d.

Install the main body ECU (multiplex network body ECU) to the power distribution box assembly.

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU>INSTALLATION


e.

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

Terminal No. (Symbol) Terminal Description Condition Specified Condition
8C-9 (FRCY) - Body ground Front door courtesy light switch (for RH) input Front door RH open Below 1 V
Front door RH closed 11 to 14 V
8F-3 (FLCY) - Body ground Front door courtesy light switch (for LH) input Front door LH open Below 1 V
Front door LH closed 11 to 14 V
8F-1 (RCTY) - Body ground Rear door courtesy light switch (for RH) input Rear door RH open Below 1 V
Rear door RH closed Pulse generation
8F-28 (LCTY) - Body ground Rear door courtesy light switch (for LH) input Rear door LH open Below 1 V
Rear door LH closed Pulse generation
8F-2 (BCTY) - Body ground Back door courtesy light switch input Back door closed Below 1 V
Back door open 11 to 14 V
8F-42 (TR+) - Body ground Back door lock motor drive output Back door closed → open Below 1 V → 11 to 14 V → Below 1 V
8C-40 (ACT-) - Body ground Door lock motor unlock drive output Door control switch or driver door key cylinder off → on (unlock) Below 1 V → 11 to 14 V → Below 1 V
8F-36 (ACT-) - Body ground*1
8F-37 (ACT-) - Body ground
8B-19 (ACT+) - Body ground Door lock motor lock drive output Door control switch or driver door key cylinder off → on (lock) Below 1 V → 11 to 14 V → Below 1 V
8B-35 (ACT+) - Body ground*1
8F-40 (ACT+) - Body ground
8F-41 (ACT+) - Body ground
I85-3 (LSFR) - Body ground Front door RH unlock detection switch input Front door RH unlocked Below 1 V
Front door RH locked Pulse generation
I85-9 (LSFL) - Body ground Front door LH unlock detection switch input Front door LH unlocked Below 1 V
Front door LH locked Pulse generation
I86-23 (LSWR) - Body ground Rear door RH unlock detection switch input Rear door RH unlocked Below 1 V
Rear door RH locked Pulse generation
I85-10 (LSWL) - Body ground Rear door LH unlock detection switch input Rear door LH unlocked Below 1 V
Rear door LH locked Pulse generation
I85-28 (L2) - Body ground Driver door key-linked lock input Driver door key cylinder turned to lock Below 1 V
I85-28 (L2) - Body ground Driver door key-linked lock input Driver door key cylinder not turned Pulse generation
I85-4 (UL3) - Body ground Driver door key-linked unlock input Driver door key cylinder turned to unlock Below 1 V
I85-4 (UL3) - Body ground Driver door key-linked unlock input Driver door key cylinder not turned Pulse generation

*1: Production Date from 2023/04




CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


B574584N40
4.76,0.5 5.26,0.75 0.5,0.25 3.396,0.5 3.896,0.75 0.5,0.25 1.948,0.5 2.448,0.75 0.5,0.25 4.885,0.531 5.344,0.729 0.458,0.198 10 false I222 3.49,0.531 3.948,0.729 0.458,0.198 10 false O200 2.063,0.531 2.521,0.729 0.458,0.198 10 false I223

a.

Disconnect the I222 certification ECU (smart key ECU assembly) connector.


b.

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

Terminal No. (Symbol) Terminal Description Condition Specified Condition
I222-29 (E) - Body ground Ground Always Below 1 Ω
I222-6 (+B) - Body ground Auxiliary battery power supply Ignition switch off 11 to 14 V


c.

Reconnect the I222 certification ECU (smart 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
O200-21 (RCO) - I222-29 (E) Output to door control receiver
(Power supply for door control receiver. Certification ECU (smart key ECU assembly) outputs 5 V when receiver starts operating.)
Proceed:
1.

Ignition switch off

2.

Bring electrical key transmitter sub-assembly outside detection area but within wireless function operational area

3.

Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed


Pulse generation
(See waveform 1)
O200-12 (CSEL) - I222-29 (E) Communication channel switching circuit
Proceed:
1.

Ignition switch off

2.

Close all doors


No pulse generation → Pulse generation
O200-11 (RDAM) - I222-29 (E) Door control receiver communication circuit
Proceed:
1.

Ignition switch off

2.

All doors locked

3.

Bring electrical key transmitter sub-assembly outside detection area but within wireless function operational area

4.

Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed


Pulse generation
(See waveform 2)


e.
B251178C12
0.198,1 0.531,1.198 0.333,0.198 10 GND 1.01,1.885 1.198,2.042 0.188,0.156 10 *a 2.021,1.885 2.208,2.042 0.188,0.156 10 *b
*a Before lock or unlock switch of electrical key transmitter sub-assembly pressed
*b After lock or unlock switch of electrical key transmitter sub-assembly pressed


Using an oscilloscope, check waveform 1.

NOTICE:

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


Waveform 1 (Reference)
Item Content
Tester Connection O200-21 (RCO) - I222-29 (E)
Tool Setting 2 V/DIV., 500 ms./DIV.
Condition Procedure:
1.

Ignition switch off

2.

Electrical key transmitter sub-assembly brought outside detection area but kept inside wireless function operational area

3.

Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed




f.
B251177C12
0.208,1 0.542,1.198 0.333,0.198 10 GND 1.021,1.896 1.208,2.052 0.188,0.156 10 *a 2.188,1.906 2.375,2.063 0.188,0.156 10 *b
*a Before lock or unlock switch of electrical key transmitter sub-assembly pressed
*b After lock or unlock switch of electrical key transmitter sub-assembly pressed


Using an oscilloscope, check waveform 2.

NOTICE:

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


Waveform 2 (Reference)
Item Content
Tester Connection O200-11 (RDAM) - I222-29 (E)
Tool Setting 5 V/DIV., 500 ms./DIV.
Condition Procedure:
1.

Ignition switch off

2.

All doors locked

3.

Electrical key transmitter sub-assembly not inside vehicle

4.

Electrical key transmitter sub-assembly brought outside detection area but kept inside wireless function operational area

5.

Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed