RM38N0EC _59 Vehicle Exterior _111831 DOOR / HATCH _0505274 POWER BACK DOOR SYSTEM U

DOOR / HATCH POWER BACK DOOR SYSTEM TERMINALS OF ECU

CHECK MULTIPLEX NETWORK DOOR ECU

2.677,0.375 3.052,0.625 0.375,0.25 4.51,0.375 4.885,0.625 0.375,0.25 2.75,0.406 3.208,0.604 0.458,0.198 10 false T12 4.573,0.406 5.031,0.604 0.458,0.198 10 false T13

Disconnect the T12 and T13 multiplex network door ECU connectors.

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
T13-10 (GND) - Body ground	Body ground	Always	Below 1 Ω
T13-1 (B) - Body ground	Auxiliary battery power supply	Ignition switch off	11 to 14 V
T12-20 (ECUB) - Body ground	Auxiliary battery power supply	Ignition switch off	11 to 14 V
T12-18 (IG) - Body ground	IG power supply	Ignition switch ON	11 to 14 V
T12-18 (IG) - Body ground	IG power supply	Ignition switch off	Below 1 V

Reconnect the T12 and T13 multiplex network door ECU connectors.

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

Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition
T12-1 (DS1) - Body ground	Power back door unit assembly set LH (door sensor) signal	Power back door not operating	7 V or higher
T12-1 (DS1) - Body ground	Power back door unit assembly set LH (door sensor) signal	Power back door operating	Pulse generation (See waveform 1)
T12-2 (DS2) - Body ground	Power back door unit assembly set LH (door sensor) signal	Power back door not operating	7 V or higher
T12-2 (DS2) - Body ground	Power back door unit assembly set LH (door sensor) signal	Power back door operating	Pulse generation (See waveform 2)
T12-3 (DS12) - Body ground	Power back door unit assembly set RH (door sensor) signal	Power back door not operating	7 V or higher
T12-3 (DS12) - Body ground	Power back door unit assembly set RH (door sensor) signal	Power back door operating	Pulse generation (See waveform 1)
T12-4 (DS22) - Body ground	Power back door unit assembly set RH (door sensor) signal	Power back door not operating	7 V or higher
T12-4 (DS22) - Body ground	Power back door unit assembly set RH (door sensor) signal	Power back door operating	Pulse generation (See waveform 2)
T12-5 (DSV2) - Body ground	Power back door unit assembly set RH (door sensor) power supply	Always	7 V or higher
T12-6 (OSR) - T12-24 (OSE)	Power back door sensor assembly RH signal	Power back door sensor assembly RH not pressed	4 to 6 V
T12-6 (OSR) - T12-24 (OSE)	Power back door sensor assembly RH signal	Power back door sensor assembly RH pressed	Below 1 V
T12-8 (BDDN) - Body ground	Back door control switch signal	Back door control switch on	Below 1 V
T12-8 (BDDN) - Body ground	Back door control switch signal	Back door control switch off	Pulse generation
T12-10 (CLSW) - Body ground	Door control switch assembly signal	Door control switch assembly on	Below 1 V
T12-10 (CLSW) - Body ground	Door control switch assembly signal	Door control switch assembly off	11 to 14 V
T12-12 (LIB) - Body ground	Back door lock signal	Back door is locked	11 to 14 V
T12-12 (LIB) - Body ground	Back door lock signal	Back door is unlocked	Below 1 V
T12-14 (KSIN) - Body ground*	Kick detection signal	Kick door control sensor assembly not detecting a foot → detecting a foot	Pulse generation (See waveform 3)
T12-16 (BZR+) - Body ground	Wireless door lock buzzer signal	Active Test PBD Buzzer is ON	Pulse generation
T12-16 (BZR+) - Body ground	Wireless door lock buzzer signal	Active Test PBD Buzzer is OFF	Below 1 V
T12-19 (DSG2) - Body ground	Power back door unit assembly set RH (door sensor) ground	Always	Below 1 V
T12-21 (DSG) - Body ground	Power back door unit assembly set LH (door sensor) ground	Always	Below 1 V
T12-25 (DSV) - Body ground	Power back door unit assembly set LH (door sensor) power supply	Always	7 V or higher
T12-26 (OSL) - T12-24 (OSE)	Power back door sensor assembly LH signal	Power back door sensor assembly LH not pressed	4 to 6 V
T12-26 (OSL) - T12-24 (OSE)	Power back door sensor assembly LH signal	Power back door sensor assembly LH pressed	Below 1 V
T13-4 (DC+) - T13-3 (DC-)	Back door lock with courtesy light switch assembly (back door lock motor) circuit	Back door lock motor operating	11 to 14 V
T13-4 (DC+) - T13-3 (DC-)		Back door lock motor not operating	Below 1 V

*: w/ Hands Free Power Back Door

2.854,1.76 3.313,1.958 0.458,0.198 10 false GND

Using an oscilloscope, check waveform 1.

Waveform 1 (Reference)
Item	Condition
Tester Connection	· T12-1 (DS1) - Body ground · T12-3 (DS12) - Body ground
Tool setting	2 V/DIV., 2 ms/DIV.
Vehicle condition	Power back door operating

HINT:: The period changes in accordance with the speed at which the power back door is opened and closed.

ii.

2.854,1.75 3.313,1.948 0.458,0.198 10 false GND

Using an oscilloscope, check waveform 2.

Waveform 2 (Reference)
Item	Condition
Tester Connection	· T12-2 (DS2) - Body ground · T12-4 (DS22) - Body ground
Tool setting	2 V/DIV., 2 ms/DIV.
Vehicle condition	Power back door operating

HINT:: The period changes in accordance with the speed at which the power back door is opened and closed.

iii.

0.313,1.625 0.771,1.823 0.458,0.198 10 false GND 1.823,1.948 2.281,2.146 0.458,0.198 10 false *a

*a	Kick detection signal

Using an oscilloscope, check waveform 3.

Waveform 3 (Reference)
Item	Condition
Tester Connection	T12-14 (KSIN) - Body ground*
Tool setting	2 V/DIV., 50 ms/DIV.
Vehicle condition	Kick door control sensor assembly not detecting a foot → detecting a foot

*: w/ Hands Free Power Back Door

CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

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 4.885,0.438 5.198,0.635 0.313,0.198 10 false E52 3.5,0.438 3.813,0.635 0.313,0.198 10 false K6 2.052,0.448 2.365,0.646 0.313,0.198 10 false A15

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

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) - Body ground	Auxiliary battery power supply	Ignition switch off	11 to 14 V
E52-29 (E) - Body ground	Body ground	Always	Below 1 Ω

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

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

Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition
K6-16 (TSW5) - E52-29 (E)	Back door opener switch (open switch) signal	Back door opener switch (open switch) off → on	Pulse generation → Below 1 V

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

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

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

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU>REMOVAL202203,202303,_57,_111828,_0500082,RM1000000022I31,202303,999999,_57,_111828,_0500082,RM100000002B19F,

Reconnect the power distribution box assembly connectors.

Measure the resistance and voltage 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-26 (BECU) - Body ground	Auxiliary battery power supply	Ignition switch off	11 to 14 V
MB-27 (IGR) - Body ground	Ignition power supply (IG signal)	Ignition switch off	Below 1 V
MB-27 (IGR) - Body ground	Ignition power supply (IG signal)	Ignition switch ON	11 to 14 V

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

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU>INSTALLATION202111,999999,_57,_111828,_0500082,RM100000001Z1A4,

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

Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition
E36-21 (PBDS) - Body ground	Power back door control switch signal	Power back door control switch off	Pulse generation
E36-21 (PBDS) - Body ground	Power back door control switch signal	Power back door control switch on	Below 1 V
E38-7 (LSBO) - Body ground	Back door lock signal	Back door is locked	Below 1 V
E38-7 (LSBO) - Body ground	Back door lock signal	Back door is unlocked	11 to 14 V
4E-2 (BCTY) - Body ground	Back door courtesy light switch input	Back door closed	11 to 14 V
4E-2 (BCTY) - Body ground	Back door courtesy light switch input	Back door open	Below 1 V