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

DOOR / HATCH  POWER BACK DOOR SYSTEM  Back Door Closer does not Operate  


DESCRIPTION

The back door lock with courtesy light switch assembly is controlled by the multiplex network door ECU. The multiplex network door ECU is activated according to the switch signals in the back door lock with courtesy light switch assembly.

WIRING DIAGRAM

E440520E14
5.688,0.292 6.146,0.49 0.458,0.198 10 false U22 5.677,0.771 6.135,0.969 0.458,0.198 10 false U22 5.677,1.24 6.135,1.438 0.458,0.198 10 false U21 5.677,1.76 6.135,1.958 0.458,0.198 10 false U21 5.688,4.792 6.146,4.99 0.458,0.198 10 false U21 0.958,7.396 1.302,7.594 0.344,0.198 10 false MB 5.677,2.271 6.135,2.469 0.458,0.198 10 false U21 5.688,2.771 6.146,2.969 0.458,0.198 10 false U22 5.677,3.281 6.135,3.479 0.458,0.198 10 false U22 5.677,3.781 6.135,3.979 0.458,0.198 10 false U22 5.688,4.281 6.146,4.479 0.458,0.198 10 false U22 3.771,0.458 5.458,0.656 1.688,0.198 10 false ECU-IGR NO.1 3.906,0.927 5.594,1.125 1.688,0.198 10 false ECU-B NO.2 4.115,1.406 4.573,1.604 0.458,0.198 10 false PBD 0.948,0.75 2.781,0.948 1.833,0.198 10 false from Auxiliary Battery 0.979,0.281 2.813,0.479 1.833,0.198 10 false from IGR NO.1 Relay 2.698,1.677 3.01,1.875 0.313,0.198 10 false M+ 2.74,2.167 3.052,2.365 0.313,0.198 10 false M- 2.635,2.677 3.094,2.875 0.458,0.198 10 false CLS 2.604,3.177 3.063,3.375 0.458,0.198 10 false OPN 2.583,3.677 3.042,3.875 0.458,0.198 10 false FSW 2.615,4.188 3.073,4.385 0.458,0.198 10 false CTY 2.771,4.708 2.927,4.906 0.156,0.198 10 false E 0.917,1.99 3.979,2.188 3.063,0.198 10 false Back Door Lock Motor 1.271,2.938 3.104,3.135 1.833,0.198 10 false Latch Switch 1.281,3.427 3.115,3.625 1.833,0.198 10 false Initial Switch 1.333,3.927 3.167,4.125 1.833,0.198 10 false Pawl Switch 0.833,4.438 3.896,4.635 3.063,0.198 10 false Back Door Courtesy Switch 3.021,1.76 3.479,1.958 0.458,0.198 10 false U18 0.813,5.208 2.708,5.573 1.896,0.365 10 false Back Door Lock with Courtesy Light Switch Assembly 0.948,7.604 2.573,7.969 1.625,0.365 10 false Main Body ECU (Multiplex Network Body ECU) 5.906,7.583 7.01,7.948 1.104,0.365 10 false Multiplex Network Door ECU 0.865,8.313 3.927,8.51 3.063,0.198 10 false : CAN Communication Line 3.115,1.542 3.271,1.74 0.156,0.198 10 false 2 3.115,2.042 3.271,2.24 0.156,0.198 10 false 1 3.115,2.552 3.271,2.75 0.156,0.198 10 false 3 3.115,3.052 3.271,3.25 0.156,0.198 10 false 6 3.125,3.563 3.281,3.76 0.156,0.198 10 false 2 3.135,4.073 3.292,4.271 0.156,0.198 10 false 4 3.125,4.583 3.281,4.781 0.156,0.198 10 false 1 6.104,0.302 6.417,0.5 0.313,0.198 10 false IG 6.094,0.781 6.677,0.979 0.583,0.198 10 false ECUB 6.115,1.26 6.427,1.458 0.313,0.198 10 false B 6.104,1.771 6.563,1.969 0.458,0.198 10 false DC+ 6.104,2.281 6.563,2.479 0.458,0.198 10 false DC- 6.104,2.76 6.563,2.958 0.458,0.198 10 false HAF 6.104,3.281 6.563,3.479 0.458,0.198 10 false POS 6.104,3.781 6.563,3.979 0.458,0.198 10 false PAWL 6.115,4.292 6.573,4.49 0.458,0.198 10 false FUL 6.094,4.802 6.552,5 0.458,0.198 10 false GND 5.708,0.083 6.021,0.281 0.313,0.198 10 false 18 5.719,0.552 6.031,0.75 0.313,0.198 10 false 20 5.76,1.031 5.917,1.229 0.156,0.198 10 false 1 5.76,1.531 5.917,1.729 0.156,0.198 10 false 4 5.76,2.063 5.917,2.26 0.156,0.198 10 false 3 5.76,2.563 5.917,2.76 0.156,0.198 10 false 9 5.75,3.052 6.063,3.25 0.313,0.198 10 false 7 5.729,3.573 6.042,3.771 0.313,0.198 10 false 13 5.708,4.063 6.021,4.26 0.313,0.198 10 false 11 5.729,4.594 6.042,4.792 0.313,0.198 10 false 10 3.042,2.271 3.5,2.469 0.458,0.198 10 false U18 3.031,2.771 3.49,2.969 0.458,0.198 10 false U17 3.031,3.281 3.49,3.479 0.458,0.198 10 false U17 3.031,3.792 3.49,3.99 0.458,0.198 10 false U17 3.042,4.292 3.5,4.49 0.458,0.198 10 false U17 3.031,4.792 3.49,4.99 0.458,0.198 10 false U17

CAUTION / NOTICE / HINT

NOTICE:
·

Inspect fuses for circuits related to this system before performing the following inspection procedure.

·

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.CHECK FOR DTC
a.

Check for DTCs.

Body Electrical > Back Door > Trouble Codes
50001 489

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



A

2.CHECK BACK DOOR LOCK FUNCTION

B

GO TO DIAGNOSTIC TROUBLE CODE CHART

Click hereVehicle Exterior>DOOR / HATCH>POWER BACK DOOR SYSTEM>DIAGNOSTIC TROUBLE CODE CHART


2.CHECK BACK DOOR LOCK FUNCTION
a.

Check if the back door can be fully closed by hand.


Result:
Result Proceed to
The back door can be closed normally A
The back door cannot be closed normally B



A

3.CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK DOOR ECU - BATTERY AND BODY GROUND)

B

IMPROPER FIT OF BACK DOOR, OR A FOREIGN OBJECT IS STUCK IN BACK DOOR

3.CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK DOOR ECU - BATTERY AND BODY GROUND)
a.
B426089C48
1.448,2.615 1.948,2.865 0.5,0.25 1.438,0.333 1.938,0.583 0.5,0.25 0.76,4.188 1.177,3.771 true 2.26,3.51 2.656,3.802 true 0.813,2.073 0.823,1.313 true 0.208,1.563 0.583,1.302 true 1.552,0.354 2.01,0.552 0.458,0.198 10 false U22 1.583,2.625 2.042,2.823 0.458,0.198 10 false U21 0.76,2.146 1.073,2.344 0.313,0.198 10 false IG 0.604,4.208 1.219,4.406 0.615,0.198 10 false GND 0.052,1.625 0.667,1.823 0.615,0.198 10 false ECUB 2.719,3.833 2.99,4.094 0.271,0.26 10 false B 0.063,0.083 0.521,0.281 0.458,0.198 10 false *a
*a Rear view of wire harness connector
(to Multiplex Network Door ECU)


Disconnect the multiplex network door ECU connectors.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
U21-10 (GND) - Body ground Always Below 1 Ω



c.

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

Standard Voltage:
Tester Connection Switch Condition Specified Condition
U22-20 (ECUB) - Body ground Ignition switch off 11 to 14 V
U21-1 (B) - Body ground Ignition switch off 11 to 14 V
U22-18 (IG) - Body ground Ignition switch ON 11 to 14 V
Ignition switch off Below 1 V



Result:
Proceed to
OK
NG



OK

4.INSPECT BACK DOOR LOCK WITH COURTESY LIGHT SWITCH ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.INSPECT BACK DOOR LOCK WITH COURTESY LIGHT SWITCH ASSEMBLY

Click hereVehicle Interior>DOOR LOCK>BACK DOOR LOCK>INSPECTION

Result:
Proceed to
OK
NG



OK

5.CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK WITH COURTESY LIGHT SWITCH ASSEMBLY - MULTIPLEX NETWORK DOOR ECU AND BODY GROUND)

NG

REPLACE BACK DOOR LOCK WITH COURTESY LIGHT SWITCH ASSEMBLY

Click hereVehicle Interior>DOOR LOCK>BACK DOOR LOCK>REMOVAL


5.CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK WITH COURTESY LIGHT SWITCH ASSEMBLY - MULTIPLEX NETWORK DOOR ECU AND BODY GROUND)
a.

Disconnect the U21 and U22 multiplex network door ECU connectors.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
U18-2 (M+) - U21-4 (DC+) Always Below 1 Ω
U18-1 (M-) - U21-3 (DC-) Always Below 1 Ω
U17-4 (CTY) - U22-11 (FUL) Always Below 1 Ω
U17-2 (FSW) - U22-13 (PAWL) Always Below 1 Ω
U17-3 (CLS) - U22-9 (HAF) Always Below 1 Ω
U17-6 (OPN) - U22-7 (POS) Always Below 1 Ω
U17-1 (E) - Body ground Always Below 1 Ω
U18-2 (M+) or U21-4 (DC+) - Body ground Always 10 kΩ or higher
U18-1 (M-) or U21-3 (DC-) - Body ground Always 10 kΩ or higher
U17-2 (FSW) or U22-13 (PAWL) - Body ground Always 10 kΩ or higher
U17-4 (CTY) or U22-11 (FUL) - Body ground Always 10 kΩ or higher
U17-3 (CLS) or U22-9 (HAF) - Body ground Always 10 kΩ or higher
U17-6 (OPN) or U22-7 (POS) - 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