RM38T0EC _59 Vehicle Exterior _113746 DOOR / HATCH _0504731 POWER BACK DOOR SYSTEM C

DOOR / HATCH  POWER BACK DOOR SYSTEM  B222049  Back Door Motor Internal Electronic Failure  


DESCRIPTION

This DTC is stored when the multiplex network door ECU detects a malfunction of the motor built-into the power back door unit assembly set LH or power back door unit assembly set RH.

DTC No. Detection Item DTC Detection Condition Trouble Area
B222049 Back Door Motor Internal Electronic Failure Malfunction of motor built into the power back door unit assembly set LH or power back door unit assembly set RH detected
·

Multiplex network door ECU

·

Power back door unit assembly set LH

·

Power back door unit assembly set RH

·

Harness or connector



WIRING DIAGRAM

E357346E33
4.26,3.01 4.719,3.208 0.458,0.198 10 false U21 4.615,0.333 5.073,0.531 0.458,0.198 10 false BD+ 4.625,0.844 5.083,1.042 0.458,0.198 10 false BD- 2.031,0.406 2.49,0.604 0.458,0.198 10 false BD+ 2.052,0.906 2.51,1.104 0.458,0.198 10 false BD- 4.604,1.979 5.219,2.177 0.615,0.198 10 false BD+2 4.615,2.51 5.229,2.708 0.615,0.198 10 false BD-2 1.958,2.073 2.573,2.271 0.615,0.198 10 false BD+2 2,2.604 2.615,2.802 0.615,0.198 10 false BD-2 5.229,1.448 5.688,1.646 0.458,0.198 10 false CPU 0.896,1.313 1.354,1.51 0.458,0.198 10 false U14 0.906,1.479 4.115,1.677 3.208,0.198 10 false Power Back Door Unit Assembly Set LH 0.906,3.01 1.365,3.208 0.458,0.198 10 false U13 0.906,3.177 4.115,3.375 3.208,0.198 10 false Power Back Door Unit Assembly Set RH 4.26,3.188 6.99,3.448 2.729,0.26 10 false Multiplex Network Door ECU 2.406,0.313 2.563,0.51 0.156,0.198 10 false 2 2.406,1.979 2.563,2.177 0.156,0.198 10 false 2 2.417,0.833 2.573,1.031 0.156,0.198 10 false 1 2.406,2.5 2.563,2.698 0.156,0.198 10 false 1 4.427,0.323 4.583,0.521 0.156,0.198 10 false 6 4.427,1.979 4.583,2.177 0.156,0.198 10 false 8 4.438,2.479 4.594,2.677 0.156,0.198 10 false 9 4.438,0.833 4.594,1.031 0.156,0.198 10 false 7

CAUTION / NOTICE / HINT

NOTICE:

If the multiplex network door ECU has been removed and installed or replaced, or if any of the connectors has been disconnected, 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
B222049 is output A
B222049 is not output B



A

3.INSPECT 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.INSPECT POWER BACK DOOR UNIT ASSEMBLY SET LH
a.

Fully open the back door.


b.
E357428C22
1.469,0.073 1.885,0.323 0.417,0.25 1.938,0.75 2.25,0.51 true 1.479,0.74 1.146,0.573 true 0.146,0.146 0.458,0.302 0.313,0.156 10 false *a 0.802,0.448 1.115,0.604 0.313,0.156 10 false BD- 2.323,0.427 2.635,0.583 0.313,0.156 10 false BD+ 1.552,0.115 1.896,0.302 0.344,0.188 10 false U14
*a Component without harness connected
(Power Back Door Unit Assembly Set LH)


Disconnect the 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
U14-1 (BD-) - Body ground Always 10 kΩ or higher
U14-2 (BD+) - Body ground Always 10 kΩ or higher
U14-1 (BD-) - U14-2 (BD+) Always Below 1 MΩ



Result:
Proceed to
OK
NG



OK

4.INSPECT POWER BACK DOOR UNIT ASSEMBLY SET RH

NG

REPLACE POWER BACK DOOR UNIT ASSEMBLY SET LH

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


4.INSPECT POWER BACK DOOR UNIT ASSEMBLY SET RH
a.

Fully open the back door.


b.
E357428C23
1.469,0.083 1.875,0.344 0.406,0.26 1.938,0.75 2.25,0.51 true 1.479,0.74 1.146,0.573 true 0.146,0.146 0.458,0.302 0.313,0.156 10 false *a 0.76,0.458 1.25,0.656 0.49,0.198 10 false BD-2 2.323,0.427 2.865,0.625 0.542,0.198 10 false BD+2 1.542,0.125 1.906,0.323 0.365,0.198 10 false U13
*a Component without harness connected
(Power Back Door Unit Assembly Set RH)


Disconnect the power back door unit assembly set RH connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
U13-1 (BD-2) - Body ground Always 10 kΩ or higher
U13-2 (BD+2) - Body ground Always 10 kΩ or higher
U13-1 (BD-2) - U13-2 (BD+2) Always Below 1 MΩ



Result:
Proceed to
OK
NG



OK

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

NG

REPLACE POWER BACK DOOR UNIT ASSEMBLY SET RH

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


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

Disconnect the U21 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
U21-6 (BD+) - U14-2 (BD+) Always Below 1 Ω
U21-7 (BD-) - U14-1 (BD-) Always Below 1 Ω
U21-6 (BD+) or U14-2 (BD+) - Body ground Always 10 kΩ or higher
U21-7 (BD-) or U14-1 (BD-) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

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

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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

Disconnect the U21 multiplex network door ECU connector.


b.

Disconnect the U13 power back door unit assembly set RH connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
U21-8 (BD+2) - U13-2 (BD+2) Always Below 1 Ω
U21-9 (BD-2) - U13-1 (BD-2) Always Below 1 Ω
U21-8 (BD+2) or U13-2 (BD+2) - Body ground Always 10 kΩ or higher
U21-9 (BD-2) or U13-1 (BD-2) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE MULTIPLEX NETWORK DOOR ECU

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


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR