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

DOOR / HATCH  POWER BACK DOOR SYSTEM  Close & Lock Function does not Operate  


DESCRIPTION

The back door control switch signal is sent to the multiplex network door ECU. If the power back door system does not operate when the back door control switch is operated, the back door control switch circuit may be malfunctioning.

WIRING DIAGRAM

E357495E45
4.385,1.979 4.844,2.177 0.458,0.198 10 false U22 1.375,1.5 1.833,1.698 0.458,0.198 10 false U12 1.229,0.927 1.385,1.125 0.156,0.198 10 false 2 3.229,0.927 3.385,1.125 0.156,0.198 10 false 5 4.531,0.938 5.146,1.135 0.615,0.198 10 false CLSW 1.375,1.667 3.667,1.865 2.292,0.198 10 false Back Door Control Switch 5.135,1.073 5.75,1.271 0.615,0.198 10 false CPU 4.385,2.167 6.333,2.5 1.948,0.333 10 false Multiplex Network Door ECU 4.271,0.927 4.583,1.125 0.313,0.198 10 false 10 1.448,0.938 1.823,1.125 0.375,0.188 10 false MSE 2.719,0.938 3.333,1.135 0.615,0.198 10 false MSW

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

·

Check the smart entry and start system (for Entry Function) first before troubleshooting the power back door system.

for HEV Model: Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>SMART ENTRY AND START SYSTEM (for Entry Function, HEV Model)>HOW TO PROCEED WITH TROUBLESHOOTING

for Gasoline Model: Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>SMART ENTRY AND START SYSTEM (for Entry Function, Gasoline Model)>HOW TO PROCEED WITH TROUBLESHOOTING

·

This function cannot be used with the digital key only.*

*: w/ Digital Key System




PROCEDURE

1.READ VALUE USING GTS
a.

Read the Data List according to the display on the GTS.

Body Electrical > Back Door > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
Close and Lock Switch Back door control switch signal OFF or ON ON: Back door control switch pressed
OFF: Back door control switch not pressed 		-
Body Electrical > Back Door > Data List
Tester Display
Close and Lock Switch
50003 489 1050
OK:

The display is as specified in the normal condition column.



OK:
Proceed to
OK
NG



OK

REPLACE MULTIPLEX NETWORK DOOR ECU

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


NG

2.INSPECT BACK DOOR CONTROL SWITCH
2.INSPECT BACK DOOR CONTROL SWITCH

Click hereVehicle Exterior>DOOR / HATCH>RESERVE LOCK SWITCH>INSPECTION

OK:
Proceed to
OK
NG



OK

3.CHECK HARNESS AND CONNECTOR (BACK DOOR CONTROL SWITCH - MULTIPLEX NETWORK DOOR ECU AND BODY GROUND)

NG

REPLACE BACK DOOR CONTROL SWITCH

Click hereVehicle Exterior>DOOR / HATCH>RESERVE LOCK SWITCH>REMOVAL


3.CHECK HARNESS AND CONNECTOR (BACK DOOR CONTROL SWITCH - MULTIPLEX NETWORK DOOR ECU AND BODY GROUND)
a.

Disconnect the U22 multiplex network door ECU connector.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
U12-5 (MSW) - U22-10 (CLSW) Always Below 1 Ω
U12-2 (MSE) - Body ground Always Below 1 Ω
U12-5 (MSW) or U22-10 (CLSW) - Body ground Always 10 kΩ or higher



OK:
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