RM36D0EC _59 Vehicle Exterior _083093 DOOR / HATCH _0584672 POWER BACK DOOR SYSTEM J

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

DESCRIPTION

Depending on the operating conditions, the multiplex network door ECU sounds the buzzer and outputs a hazard light flash signal to the combination meter assembly.

WIRING DIAGRAM

1.438,1.406 3.646,1.656 2.208,0.25 10 false Power Back Door Warning Buzzer 1.438,1.229 1.75,1.427 0.313,0.198 10 false Q2 1.75,0.594 2.365,0.792 0.615,0.198 10 false BZR- 2.938,0.594 3.552,0.792 0.615,0.198 10 false BZR+ 1.531,0.594 1.688,0.792 0.156,0.198 10 false 2 3.406,0.604 3.563,0.802 0.156,0.198 10 false 1 4.5,0.604 4.656,0.802 0.156,0.198 10 false 1 4.719,0.594 5.333,0.792 0.615,0.198 10 false BZR+ 5.448,1.479 5.906,1.677 0.458,0.198 10 false CPU 1.604,2.708 3.469,2.948 1.865,0.24 10 false Combination Meter Assembly 0.583,4.448 2.323,4.646 1.74,0.198 10 false : CAN Communication Line 1.115,4 4.021,4.229 2.906,0.229 10 false Main Body ECU (Multiplex Network Body ECU) 4.594,3.031 6.427,3.271 1.833,0.24 10 false Multiplex Network Door ECU 4.604,2.854 5.063,3.052 0.458,0.198 10 false R30

CAUTION / NOTICE / HINT

NOTICE:: ·

If the multiplex network door ECU has been 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>INITIALIZATION202304,999999,_59,_083093,_0584672,RM1000000029PGT,

·

First perform the communication function inspections in How to Proceed with Troubleshooting to confirm that there are no CAN communication malfunctions before troubleshooting this problem.

Click hereVehicle Exterior>DOOR / HATCH>POWER BACK DOOR SYSTEM>HOW TO PROCEED WITH TROUBLESHOOTING202409,999999,_59,_083093,_0584672,RM100000002NT0T,

·

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

PROCEDURE

1.CHECK OPERATION

Operate the power back door and check that the warning buzzer and hazard warning light operate.

Result:

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

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

6.PERFORM ACTIVE TEST USING GTS

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

Check wireless door lock operation.

w/ Smart Entry and Start System:

Click hereVehicle Interior>DOOR LOCK>WIRELESS DOOR LOCK CONTROL SYSTEM (w/ Smart Entry and Start System)>HOW TO PROCEED WITH TROUBLESHOOTING202409,999999,_58,_083092,_0712251,RM100000002NSAL,

w/o Smart Entry and Start System:

Click hereVehicle Interior>DOOR LOCK>WIRELESS DOOR LOCK CONTROL SYSTEM (w/o Smart Entry and Start System)>HOW TO PROCEED WITH TROUBLESHOOTING202409,999999,_58,_083092,_0403004,RM100000002NSAY,

OK:: Hazard answer-back function operates normally.

Result:

Proceed to
OK
NG

3.REPLACE MULTIPLEX NETWORK DOOR ECU

GO TO WIRELESS DOOR LOCK CONTROL SYSTEM

w/ Smart Entry and Start System:

Click hereVehicle Interior>DOOR LOCK>WIRELESS DOOR LOCK CONTROL SYSTEM (w/ Smart Entry and Start System)>HOW TO PROCEED WITH TROUBLESHOOTING202409,999999,_58,_083092,_0712251,RM100000002NSAL,

w/o Smart Entry and Start System:

Click hereVehicle Interior>DOOR LOCK>WIRELESS DOOR LOCK CONTROL SYSTEM (w/o Smart Entry and Start System)>HOW TO PROCEED WITH TROUBLESHOOTING202409,999999,_58,_083092,_0403004,RM100000002NSAY,

3.REPLACE MULTIPLEX NETWORK DOOR ECU

Temporarily replace the multiplex network door ECU with a new or normally functioning one.

Click hereVehicle Exterior>DOOR / HATCH>BACK DOOR CLOSER ECU>REMOVAL202304,999999,_59,_083093,_0403698,RM1000000029P8M,

Result:

Proceed to
NEXT

4.INITIALIZE MULTIPLEX NETWORK DOOR ECU

Perform the initialization for the multiplex network door ECU.

Click hereVehicle Exterior>DOOR / HATCH>POWER BACK DOOR SYSTEM>INITIALIZATION202304,999999,_59,_083093,_0584672,RM1000000029PGT,

Result:

Proceed to
NEXT

5.CHECK POWER BACK DOOR SYSTEM

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

Click hereVehicle Exterior>DOOR / HATCH>POWER BACK DOOR SYSTEM>OPERATION CHECK202409,999999,_59,_083093,_0584672,RM100000002O74V,

OK:: The power back door hazard warning lights operate normally.

Result:

Proceed to
OK
NG

END (MULTIPLEX NETWORK DOOR ECU WAS DEFECTIVE)

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU>REMOVAL202409,999999,_57,_083090,_0403094,RM100000002NG0W,

6.PERFORM ACTIVE TEST USING GTS

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

REPLACE MULTIPLEX NETWORK DOOR ECU

Click hereVehicle Exterior>DOOR / HATCH>BACK DOOR CLOSER ECU>REMOVAL202304,999999,_59,_083093,_0403698,RM1000000029P8M,

7.CHECK MULTIPLEX NETWORK DOOR ECU

Disconnect the Q2 Power back door warning buzzer connector.

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 (Middle Volume)	Power back door warning buzzer sound (Middle volume)	Start	-

Body Electrical > Back Door > Active Test

Tester Display
PBD Buzzer (Middle Volume)

50004 489 42007

1.469,0.385 1.917,0.635 0.448,0.25 0.99,1.75 1.563,1.375 true 2.385,1.74 1.76,1.385 true 0.115,0.083 0.427,0.281 0.313,0.198 10 false *a 1.604,0.438 1.917,0.635 0.313,0.198 10 false Q2 0.542,1.667 1.073,1.885 0.531,0.219 10 false BZR+ 2.5,1.646 3.01,1.917 0.51,0.271 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
Q2-1 (BZR+) - Q2-2 (BZR-)	Active Test "PBD Buzzer (Middle Volume)" is not performed	Below 1 V
Q2-1 (BZR+) - Q2-2 (BZR-)	Active Test "PBD Buzzer (Middle Volume)" is being performed	Pulse generation (frequency: 2 kHz, high voltage: 11 to 14 V, low voltage: below 1 V)

Result:

Proceed to
OK
NG

REPLACE POWER BACK DOOR WARNING BUZZER

Click hereVehicle Exterior>DOOR / HATCH>POWER BACK DOOR WARNING BUZZER>REMOVAL202409,999999,_59,_083093,_0403699,RM100000002NG1T,

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

Disconnect the Q2 power back door warning buzzer connector.

Disconnect the R30 multiplex network door ECU connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
Q2-1 (BZR+) - R30-1 (BZR+)	Always	Below 1 Ω
Q2-2 (BZR-) - Body ground	Always	Below 1 Ω
Q2-1 (BZR+) or R30-1 (BZR+) - Body ground	Always	10 kΩ or higher

Result:

Proceed to
OK
NG

REPLACE MULTIPLEX NETWORK DOOR ECU

Click hereVehicle Exterior>DOOR / HATCH>BACK DOOR CLOSER ECU>REMOVAL202304,999999,_59,_083093,_0403698,RM1000000029P8M,

REPAIR OR REPLACE HARNESS OR CONNECTOR