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

DOOR / HATCH  POWER BACK DOOR SYSTEM  Power Back Door Warning System does not Operate  


DESCRIPTION

If the power back door warning system does not operate, there may be a malfunction in one of the following: 1) wireless door lock control system, 2) power back door warning buzzer circuit or 3) multiplex network door ECU.

WIRING DIAGRAM

B556202E06
1.156,4.406 3.198,4.604 2.042,0.198 10 false : CAN Communication Line 1.281,2.583 2.906,3.01 1.625,0.427 10 false Main Body ECU (Multiplex Network Body ECU) 1.26,3.885 3.552,4.083 2.292,0.198 10 false Combination Meter Assembly 4.458,4.083 6.427,4.281 1.969,0.198 10 false Multiplex Network Door ECU 4.604,0.646 5.219,0.844 0.615,0.198 10 false BZR+ 5.344,0.771 5.958,0.969 0.615,0.198 10 false CPU 1.375,1.438 3.823,1.635 2.448,0.198 10 false Power Back Door Warning Buzzer 4.323,0.646 4.635,0.844 0.313,0.198 10 false 16 1.375,1.281 1.688,1.479 0.313,0.198 10 false R2 2.615,0.646 3.229,0.844 0.615,0.198 10 false BZR+ 1.698,0.646 2.313,0.844 0.615,0.198 10 false BZR- 1.479,0.646 1.635,0.844 0.156,0.198 10 false 2 3.063,0.646 3.219,0.844 0.156,0.198 10 false 1 4.458,3.927 5.073,4.125 0.615,0.198 10 false T12

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

·

The "PBD Buzzer Function" can be customized. Make sure the function is set to "ON".

Click hereVehicle Exterior>DOOR / HATCH>POWER BACK DOOR SYSTEM>CUSTOMIZE PARAMETERS

·

If the main body ECU (multiplex network body ECU) is replaced, refer to Service Bulletin.



PROCEDURE

1.CHECK OPERATION
a.

Check power back door system operation.

Click hereVehicle Exterior>DOOR / HATCH>POWER BACK DOOR SYSTEM>OPERATION CHECK


Result:
Result Proceed to
Hazard warning light does not come on A
Power back door warning buzzer does not operate B



A

2.CHECK WIRELESS DOOR LOCK CONTROL SYSTEM (HAZARD ANSWER-BACK FUNCTION)

B

6.PERFORM ACTIVE TEST USING GTS
2.CHECK WIRELESS DOOR LOCK CONTROL SYSTEM (HAZARD ANSWER-BACK FUNCTION)
a.

Check wireless door lock operation.

Click hereVehicle Interior>DOOR LOCK>WIRELESS DOOR LOCK CONTROL SYSTEM>OPERATION CHECK

OK:

Hazard answer-back function operates normally.



Result:
Proceed to
OK
NG



OK

3.REPLACE MULTIPLEX NETWORK DOOR ECU

NG

GO TO WIRELESS DOOR LOCK CONTROL SYSTEM

Click hereVehicle Interior>DOOR LOCK>WIRELESS DOOR LOCK CONTROL SYSTEM>HOW TO PROCEED WITH TROUBLESHOOTING


3.REPLACE MULTIPLEX NETWORK DOOR ECU
a.

Temporarily replace the multiplex network door ECU with a new or known good one.

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


Result:
Proceed to
NEXT



NEXT

4.INITIALIZE POWER BACK DOOR SYSTEM
4.INITIALIZE POWER BACK DOOR SYSTEM
a.

Initialize the power back door system.

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


Result:
Proceed to
NEXT



NEXT

5.CHECK POWER BACK DOOR SYSTEM
5.CHECK POWER BACK DOOR SYSTEM
a.

Check that the power back door hazard warning lights operate normally.

Click hereVehicle Exterior>DOOR / HATCH>POWER BACK DOOR SYSTEM>OPERATION CHECK

OK:

The power back door hazard warning lights operate normally.



Result:
Proceed to
OK
NG



OK

END (MULTIPLEX NETWORK DOOR ECU WAS DEFECTIVE)

NG

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU>REMOVAL


6.PERFORM ACTIVE TEST USING GTS
a.

Perform the Active Test according to the display on the GTS.

Body Electrical > Back Door > Active Test
Tester Display Measurement Item Control Range Diagnostic Note
PBD Buzzer (Small Volume) Power back door warning buzzer sound (Small volume) Start -
PBD Buzzer (Middle Volume) Power back door warning buzzer sound (Middle volume) Start -
PBD Buzzer (Large Volume) Power back door warning buzzer sound (Large volume) Start -
Body Electrical > Back Door > Active Test
Tester Display
PBD Buzzer (Small Volume)
50004 489 42003
Body Electrical > Back Door > Active Test
Tester Display
PBD Buzzer (Middle Volume)
50004 489 42007
Body Electrical > Back Door > Active Test
Tester Display
PBD Buzzer (Large Volume)
50004 489 42008
OK:

Power back door warning buzzer sounds



Result:
Proceed to
OK
NG



OK

REPLACE MULTIPLEX NETWORK DOOR ECU

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


NG

7.INSPECT MULTIPLEX NETWORK DOOR ECU
7.INSPECT MULTIPLEX NETWORK DOOR ECU
a.

Disconnect the R2 power back door warning buzzer connector.


b.

Perform the Active Test according to the display on the GTS.

Body Electrical > Back Door > Active Test
Tester Display Measurement Item Control Range Diagnostic Note
PBD Buzzer (Small Volume) Power back door warning buzzer sound (Small volume) Start -
PBD Buzzer (Middle Volume) Power back door warning buzzer sound (Middle volume) Start -
PBD Buzzer (Large Volume) Power back door warning buzzer sound (Large volume) Start -
Body Electrical > Back Door > Active Test
Tester Display
PBD Buzzer (Small Volume)
50004 489 42003
Body Electrical > Back Door > Active Test
Tester Display
PBD Buzzer (Middle Volume)
50004 489 42007
Body Electrical > Back Door > Active Test
Tester Display
PBD Buzzer (Large Volume)
50004 489 42008

c.
B222362C97
1.469,0.417 1.885,0.667 0.417,0.25 0.917,1.729 1.552,1.406 true 2.375,1.719 1.802,1.396 true 0.24,0.198 0.552,0.396 0.313,0.198 10 false *a 1.594,0.448 1.906,0.646 0.313,0.198 10 false R2 0.51,1.656 1,1.844 0.49,0.188 10 false BZR+ 2.448,1.656 2.938,1.844 0.49,0.188 10 false BZR-
*a Front view of wire harness connector
(to Power Back Door Warning Buzzer)


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

Standard Voltage:
Tester Connection Condition Specified Condition

Click Location & Routing(R2)Location & Routing

Click Connector(R2)Body>Luggage Room Wire>Power Back Door Warning Buzzer

R2-1 (BZR+) - R2-2 (BZR-) Active Test PBD Buzzer not started Below 1 V
Active Test PBD Buzzer started Pulse generation
(frequency: 2 kHz, high voltage: 11 to 14 V, low voltage: below 1 V)



Result:
Proceed to
OK
NG



OK

REPLACE POWER BACK DOOR WARNING BUZZER

Click hereVehicle Exterior>DOOR / HATCH>POWER BACK DOOR WARNING BUZZER>REMOVAL


NG

8.CHECK HARNESS AND CONNECTOR (POWER BACK DOOR WARNING BUZZER - MULTIPLEX NETWORK DOOR ECU AND BODY GROUND)
8.CHECK HARNESS AND CONNECTOR (POWER BACK DOOR WARNING BUZZER - MULTIPLEX NETWORK DOOR ECU AND BODY GROUND)
a.

Disconnect the T12 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

Click Location & Routing(R2,T12)Location & Routing

Click Connector(R2)Body>Luggage Room Wire>Power Back Door Warning Buzzer

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

R2-1 (BZR+) - T12-16 (BZR+) Always Below 1 Ω
R2-2 (BZR-) - Body ground Always Below 1 Ω
R2-1 (BZR+) or T12-16 (BZR+) - 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