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

DOOR / HATCH  POWER BACK DOOR SYSTEM  B222631  PBD Unit Pulse Sensor LH Circuit No Signal  


DESCRIPTION

This DTC is output when the multiplex network door ECU detects a power back door unit assembly set LH pulse malfunction.

DTC No. Detection Item DTC Detection Condition Trouble Area
B222631 PBD Unit Pulse Sensor LH Circuit No Signal Multiplex network door ECU detects power back door unit assembly set LH pulse malfunction
·

Multiplex network door ECU

·

Power back door unit assembly set LH

·

Wire harness or connector



WIRING DIAGRAM

B556209E08
4.073,2.625 4.531,2.823 0.458,0.198 10 false T12 4.094,2.802 5.969,3.094 1.875,0.292 10 false Multiplex Network Door ECU 4.333,2.073 4.792,2.271 0.458,0.198 10 false DSG 4.323,1.552 4.781,1.75 0.458,0.198 10 false DSV 4.344,1.021 4.802,1.219 0.458,0.198 10 false DS2 4.333,0.521 4.792,0.719 0.458,0.198 10 false DS1 2.115,0.635 2.573,0.833 0.458,0.198 10 false DS1 2.125,1.167 2.583,1.365 0.458,0.198 10 false DS2 2.094,1.688 2.552,1.885 0.458,0.198 10 false DSV 2.083,2.188 2.542,2.385 0.458,0.198 10 false DSG 4.938,0.885 5.396,1.083 0.458,0.198 10 false CPU 5.104,1.448 5.563,1.646 0.458,0.198 10 false +B 4.104,0.51 4.26,0.708 0.156,0.198 10 false 1 4.104,1.021 4.26,1.219 0.156,0.198 10 false 2 2.51,1.542 2.667,1.74 0.156,0.198 10 false 3 2.521,2.063 2.677,2.26 0.156,0.198 10 false 4 2.51,0.521 2.667,0.719 0.156,0.198 10 false 5 2.51,1.021 2.667,1.219 0.156,0.198 10 false 6 4.052,1.542 4.365,1.74 0.313,0.198 10 false 25 4.052,2.063 4.365,2.26 0.313,0.198 10 false 21 1.292,2.646 1.75,2.844 0.458,0.198 10 false T15 1.313,2.813 2.698,3.156 1.385,0.344 10 false Power Back Door Unit Assembly Set LH

CAUTION / NOTICE / HINT

NOTICE:

If the multiplex network door ECU has been removed and installed or replaced, or if any of the connectors have been disconnected, initialize the power back door system.

Click hereVehicle Exterior>DOOR / HATCH>POWER BACK DOOR SYSTEM>INITIALIZATION


PROCEDURE

1.CHECK FOR DTC
a.

Clear the DTCs.

Body Electrical > Back Door > Clear DTCs
50002 489

b.

Recheck for DTCs.

Body Electrical > Back Door > Trouble Codes
50001 489
OK:

DTC B222631 is not output.



Result:
Proceed to
OK
NG



OK

USE SIMULATION METHOD TO CHECK

Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING


NG

2.CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK DOOR ECU - POWER BACK DOOR UNIT ASSEMBLY SET LH)
2.CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK DOOR ECU - POWER BACK DOOR UNIT ASSEMBLY SET LH)
a.

Disconnect the T12 multiplex network door ECU connector.


b.

Disconnect the T15 power back door unit assembly set LH connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition

Click Location & Routing(T12,T15)Location & Routing

Click Connector(T12)Body>No. 1 Back Door Wire>Multiplex Network Door ECU

Click Connector(T15)Body>No. 1 Back Door Wire>Power Back Door Unit Assembly Set LH

T12-21 (DSG) - T15-4 (DSG) Always Below 1 Ω
T12-25 (DSV) - T15-3 (DSV) Always Below 1 Ω
T12-2 (DS2) - T15-6 (DS2) Always Below 1 Ω
T12-1 (DS1) - T15-5 (DS1) Always Below 1 Ω
T12-21 (DSG) or T15-4 (DSG) - Body ground Always 10 kΩ or higher
T12-25 (DSV) or T15-3 (DSV) - Body ground Always 10 kΩ or higher
T12-2 (DS2) or T15-6 (DS2) - Body ground Always 10 kΩ or higher
T12-1 (DS1) or T15-5 (DS1) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

3.CHECK MULTIPLEX NETWORK DOOR ECU

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.CHECK MULTIPLEX NETWORK DOOR ECU
a.

Reconnect the T12 multiplex network door ECU connector.


b.
B556210C11
0.146,0.927 0.573,1.229 0.427,0.302 1.896,1.125 2.198,0.729 2.198,0.729 2.344,0.729 true 1.896,1.458 2.094,1.781 2.094,1.781 2.26,1.781 true 1.115,0.625 1.271,0.625 1.271,0.625 1.688,1.125 true 1.281,1.844 1.458,1.844 1.458,1.844 1.708,1.458 true 0.135,0.083 0.594,0.281 0.458,0.198 10 false *a 0.219,1 0.677,1.198 0.458,0.198 10 false T15 0.771,0.552 1.229,0.75 0.458,0.198 10 false DSG 2.354,1.708 2.813,1.906 0.458,0.198 10 false DS1 0.969,1.771 1.427,1.969 0.458,0.198 10 false DS2 2.427,0.656 2.885,0.854 0.458,0.198 10 false DSV
*a Front view of wire harness connector
(to Power Back Door Unit Assembly Set LH)


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

Standard Resistance:
Tester Connection Condition Specified Condition

Click Location & Routing(T15)Location & Routing

Click Connector(T15)Body>No. 1 Back Door Wire>Power Back Door Unit Assembly Set LH

T15-4 (DSG) - Body ground Always Below 1 Ω



c.

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

Standard Voltage:
Tester Connection Condition Specified Condition

Click Location & Routing(T15)Location & Routing

Click Connector(T15)Body>No. 1 Back Door Wire>Power Back Door Unit Assembly Set LH

T15-5 (DS1) - Body ground Always 7 V or higher
T15-6 (DS2) - Body ground Always 7 V or higher
T15-3 (DSV) - Body ground Always 7 V or higher



Result:
Proceed to
OK
NG



OK

4.CHECK POWER BACK DOOR UNIT ASSEMBLY SET LH

NG

REPLACE MULTIPLEX NETWORK DOOR ECU

Click hereVehicle Exterior>DOOR / HATCH>BACK DOOR CLOSER ECU>REMOVAL


4.CHECK POWER BACK DOOR UNIT ASSEMBLY SET LH
a.

Reconnect the T15 power back door unit assembly set LH connector.


b.

Using an oscilloscope, check the waveform of each terminal from the rear of the T12 multiplex network door ECU connector.

B556211C11
0.885,0.688 1.292,0.948 0.406,0.26 1.792,1.49 1.865,2.115 true 1.729,1.49 1.333,2.188 true 4.292,2.073 4.75,2.271 0.458,0.198 10 false GND 6.823,2.083 7.156,2.323 0.333,0.24 10 false GND 0.083,0.073 0.542,0.271 0.458,0.198 10 false *a 0.948,0.74 1.406,0.938 0.458,0.198 10 false T12 1.229,2.25 1.688,2.448 0.458,0.198 10 false DS2 1.729,2.167 2.188,2.365 0.458,0.198 10 false DS1 2.125,0.563 2.583,0.76 0.458,0.198 10 false *b 4.698,0.542 5.156,0.74 0.458,0.198 10 false *c
*a Component with harness connected
(Multiplex Network Door ECU) 		*b Waveform (CH1)
*c Waveform (CH2) - -


Measurement Condition:
Item Condition
Tester Connection
·

CH1: T12-1 (DS1) - Body ground

·

CH2: T12-2 (DS2) - Body ground


Tool setting 2 V/DIV., 2 ms/DIV.
Vehicle condition Open and close the back door by hand.


HINT:

The period changes in accordance with the speed at which the back door is opened and closed by hand.


OK:

The waveform displayed is as shown in the illustration.



Result:
Proceed to
OK
NG



OK

REPLACE MULTIPLEX NETWORK DOOR ECU

Click hereVehicle Exterior>DOOR / HATCH>BACK DOOR CLOSER ECU>REMOVAL


NG

REPLACE POWER BACK DOOR UNIT ASSEMBLY SET LH

Click hereVehicle Exterior>DOOR / HATCH>POWER BACK DOOR DRIVE UNIT>REMOVAL