RM38N0EC _58 Vehicle Interior _111830 DOOR LOCK _0505352 WIRELESS DOOR LOCK CONTROL SYSTEM U

DOOR LOCK  WIRELESS DOOR LOCK CONTROL SYSTEM  TERMINALS OF ECU  


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


B704094N01
3.396,3.25 3.781,3.479 0.385,0.229 1.521,4.5 1.906,4.729 0.385,0.229 3.875,4.5 4.26,4.729 0.385,0.229 5.698,4.5 6.083,4.729 0.385,0.229 1.146,6.104 1.531,6.333 0.385,0.229 2.938,6.104 3.323,6.333 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 1.24,3.24 1.625,3.469 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 5.458,3.25 5.844,3.479 0.385,0.229 1.958,1.229 2.26,1.229 false 4.26,0.813 4.26,0.26 4.26,0.26 4.438,0.26 false 1.958,1.552 2.26,1.552 false 1.958,1.875 2.26,1.875 false 0.969,1.885 1.281,2.083 0.313,0.198 10 false 4H 1.167,2.385 1.479,2.583 0.313,0.198 10 false 4F 0.979,1.083 1.292,1.281 0.313,0.198 10 false 4E 0.979,1.594 1.292,1.792 0.313,0.198 10 false 4D 6.052,2.094 6.365,2.292 0.313,0.198 10 false 4A 2.333,1.49 2.792,1.688 0.458,0.198 10 false E36 2.333,1.813 2.792,2.01 0.458,0.198 10 false E37 4.5,0.198 4.885,0.385 0.385,0.188 10 false MB 1.333,3.292 1.802,3.5 0.469,0.208 10 false E37 3.49,3.292 3.948,3.49 0.458,0.198 10 false E36 3.052,6.146 3.51,6.344 0.458,0.198 10 false 4D 5.813,4.542 6.271,4.74 0.458,0.198 10 false 4A 3.542,7.813 4,8.01 0.458,0.198 10 false MB 6.031,1.729 6.344,1.927 0.313,0.198 10 false 4B 6.031,1.146 6.344,1.344 0.313,0.198 10 false 4C 0.969,2.146 1.281,2.344 0.313,0.198 10 false 4G 3.979,4.552 4.292,4.75 0.313,0.198 10 false 4B 1.635,4.542 1.948,4.74 0.313,0.198 10 false 4C 1.26,6.135 1.573,6.333 0.313,0.198 10 false 4E 4.365,6.146 4.677,6.344 0.313,0.198 10 false 4H 5.354,6.146 5.667,6.344 0.313,0.198 10 false 4G 6.375,6.146 6.688,6.344 0.313,0.198 10 false 4F 5.542,3.302 6,3.5 0.458,0.198 10 false E38 2.323,1.156 2.781,1.354 0.458,0.198 10 false E38

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 connectors.


c.

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

Terminal No. (Symbol) Terminal Description Condition Specified Condition
MB-13 (GND1) - Body ground Ground Always Below 1 Ω
MB-14 (GND2) - Body ground Ground Always Below 1 Ω
MB-25 (SBAT) - Body ground Auxiliary battery power supply Ignition switch off*1
Always*2 		11 to 14 V
MB-26 (BECU) - Body ground Auxiliary battery power supply Ignition switch off*1
Always*2 		11 to 14 V
MB-27 (IGR) - Body ground IG power supply Ignition switch ON 11 to 14 V
Ignition switch off Below 1 V

*1: for HV Model

*2: for Gasoline Model




CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


B574584
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 4.896,0.458 5.208,0.656 0.313,0.198 10 false E52 3.5,0.458 3.813,0.656 0.313,0.198 10 false K6 2.063,0.469 2.375,0.667 0.313,0.198 10 false A15

a.

Disconnect the E52 certification ECU (smart key ECU assembly) connector.


b.

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 connector disconnected.


Terminal No. (Symbol) Terminal Description Condition Specified Condition
E52-6 (+B) - E52-29 (E) Auxiliary battery power supply Ignition switch off*1
Always*2 		11 to 14 V
E52-29 (E) - Body ground Ground Always Below 1 Ω

*1: for HV Model

*2: for Gasoline Model



c.

Reconnect the E52 certification ECU (smart key ECU assembly) connector.


d.

Check for pulses according to the value(s) in the table below.

Terminal No. (Symbol) Terminal Description Condition Specified Condition
K6-21 (RCO) - E52-29 (E) Output to electrical key and tire pressure monitoring system receiver assembly
(Power supply for electrical key and tire pressure monitoring system receiver assembly. Certification ECU (smart key ECU assembly) outputs 5 V when receiver starts operating.)
Procedure:
1.

Turn ignition switch off

2.

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

3.

Press lock or unlock switch of electrical key transmitter sub-assembly


Plus generation (See waveform 1)
K6-11 (RDAM) - E52-29 (E) Electrical key and tire pressure monitoring system receiver assembly communication circuit
Procedure:
1.

Turn ignition switch off

2.

Lock all doors

3.

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

4.

Press lock or unlock switch of electrical key transmitter sub-assembly


Plus generation (See waveform 2)
K6-12 (CSEL) - E52-29 (E) Communication channel switching circuit
Procedure:
1.

Turn ignition switch off

2.

Close all doors


No pulse generation → Pulse generation


e.
B251178
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.

HINT:

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 K6-21 (RCO) - E52-29 (E)
Tool setting 2 V/DIV., 500 ms/DIV.
Condition Procedure:
1.

Turn ignition switch off

2.

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

3.

Press lock or unlock switch of electrical key transmitter sub-assembly




f.
B251177
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.

HINT:

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 K6-11 (RDAM) - E52-29 (E)
Tool setting 5 V/DIV., 500 ms/DIV.
Condition Procedure:
1.

Turn ignition switch off

2.

Lock all doors

3.

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

4.

Press lock or unlock switch of electrical key transmitter sub-assembly