RM38T0EC _59 Vehicle Exterior _113746 DOOR / HATCH _0504731 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

·

Harness or connector



WIRING DIAGRAM

E357347E91
4.073,2.625 4.531,2.823 0.458,0.198 10 false U22 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 4.323,1.563 4.781,1.76 0.458,0.198 10 false DSV 4.344,1.042 4.802,1.24 0.458,0.198 10 false DS2 4.333,0.521 4.792,0.719 0.458,0.198 10 false DS1 2.115,0.604 2.573,0.802 0.458,0.198 10 false DS1 2.125,1.125 2.583,1.323 0.458,0.198 10 false DS2 2.094,1.646 2.552,1.844 0.458,0.198 10 false DSV 2.083,2.167 2.542,2.365 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 4.135,0.51 4.333,0.708 0.198,0.198 10 false 1 4.135,1.01 4.292,1.208 0.156,0.198 10 false 2 2.458,1.542 2.615,1.74 0.156,0.198 10 false 3 2.458,2.063 2.615,2.26 0.156,0.198 10 false 4 2.458,0.521 2.615,0.719 0.156,0.198 10 false 5 2.469,1.021 2.625,1.219 0.156,0.198 10 false 6 4.083,1.552 4.396,1.75 0.313,0.198 10 false 25 4.063,2.073 4.375,2.271 0.313,0.198 10 false 21 1.292,2.635 1.75,2.833 0.458,0.198 10 false U14 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 replacement, removal and installation of the multiplex network door ECU or disconnection of the connectors of the multiplex network door ECU has been performed, initialize the power back door system.

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


PROCEDURE

1.CLEAR DTC
a.

Clear the DTCs.

Body Electrical > Back Door > Clear DTCs
50002 489

Result:
Proceed to
NEXT



NEXT

2.CHECK FOR DTC
2.CHECK FOR DTC
a.

Check for DTCs.

Body Electrical > Back Door > Trouble Codes
50001 489

Result:
Result Proceed to
B222631 is output A
B222631 is not output B



A

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

B

USE SIMULATION METHOD TO CHECK

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


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

Disconnect the U22 multiplex network door ECU connector.


b.

Disconnect the U14 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
U22-21 (DSG) - U14-4 (DSG) Always Below 1 Ω
U22-25 (DSV) - U14-3 (DSV) Always Below 1 Ω
U22-2 (DS2) - U14-6 (DS2) Always Below 1 Ω
U22-1 (DS1) - U14-5 (DS1) Always Below 1 Ω
U22-21 (DSG) or U14-4 (DSG) - Body ground Always 10 kΩ or higher
U22-25 (DSV) or U14-3 (DSV) - Body ground Always 10 kΩ or higher
U22-2 (DS2) or U14-6 (DS2) - Body ground Always 10 kΩ or higher
U22-1 (DS1) or U14-5 (DS1) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

4.CHECK MULTIPLEX NETWORK DOOR ECU

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.CHECK MULTIPLEX NETWORK DOOR ECU
a.

Disconnect the U14 power back door unit assembly set LH connector.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
U14-4 (DSG) - Body ground Always Below 1 Ω



c.
E475539C01
1.458,0.271 1.958,0.521 0.5,0.25 1.875,1.229 2.24,1.01 true 1.865,1.479 2.229,1.26 true 1.604,1.25 1.031,0.875 true 1.583,1.479 1.01,1.302 true 1.573,0.302 2.031,0.5 0.458,0.198 10 false U14 0.167,0.115 0.479,0.313 0.313,0.198 10 false *a 2.271,0.875 2.688,1.135 0.417,0.26 10 false DSV 2.271,1.125 2.688,1.385 0.417,0.26 10 false DS1 0.677,0.76 1.094,1.021 0.417,0.26 10 false DSG 0.688,1.198 1.104,1.458 0.417,0.26 10 false DS2
*a Front view of wire harness connector
(to Power Back Door Unit Assembly Set LH)


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

Standard Voltage:
Tester Connection Condition Specified Condition
U14-5 (DS1) - Body ground IG OFF 7 V or higher
U14-6 (DS2) - Body ground IG OFF 7 V or higher
U14-3 (DSV) - Body ground IG OFF 7 V or higher



Result:
Proceed to
OK
NG



OK

5.CHECK POWER BACK DOOR UNIT ASSEMBLY SET LH

NG

REPLACE MULTIPLEX NETWORK DOOR ECU

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


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

Using an oscilloscope, check the waveform of each terminal from the rear of the U22 multiplex network door ECU connector.

B556211C13
0.75,0.719 1.25,0.969 0.5,0.25 1.708,1.542 1.5,2.167 true 1.792,1.542 1.917,2.167 true 4.271,2.052 4.729,2.25 0.458,0.198 10 false GND 6.813,2.052 7.156,2.302 0.344,0.25 10 false GND 0.083,0.073 0.542,0.271 0.458,0.198 10 false *a 0.865,0.75 1.323,0.948 0.458,0.198 10 false U22 1.302,2.188 1.76,2.385 0.458,0.198 10 false DS2 1.802,2.188 2.26,2.385 0.458,0.198 10 false DS1 2.115,0.563 2.573,0.76 0.458,0.198 10 false *b 4.688,0.542 5.146,0.74 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: U22-1 (DS1) - Body ground

·

CH2: U22-2 (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 to 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