RM38T0EC _58 Vehicle Interior _115226 DOOR LOCK _0510939 POWER DOOR LOCK CONTROL SYSTEM J

DOOR LOCK  POWER DOOR LOCK CONTROL SYSTEM  Only Back Door cannot be Opened  


DESCRIPTION

The main body ECU (multiplex network body ECU) receives signals from the back door opener switch assembly. Then, the main body ECU (multiplex network body ECU) activates the back door lock motor.

WIRING DIAGRAM

E455801E05
0.625,1.979 0.781,2.177 0.156,0.198 10 false 2 0.833,1.969 1.323,2.219 0.49,0.25 10 false ACT- 2.01,1.958 2.5,2.208 0.49,0.25 10 false ACT+ 2.177,2.51 2.406,2.708 0.229,0.198 10 false D+ 2.458,2.49 2.615,2.688 0.156,0.198 10 false 3 2.458,1.979 2.615,2.177 0.156,0.198 10 false 1 0.667,3.115 2.552,3.531 1.885,0.417 10 false Back Door Lock with Courtesy Light Switch Assembly 3.073,2.594 3.385,2.813 0.313,0.219 10 false 8F 3.073,1.833 3.385,2.052 0.313,0.219 10 false 42 3.104,2.417 3.417,2.635 0.313,0.219 10 false 2 5.354,2.479 5.844,2.729 0.49,0.25 10 false BCTY 5.365,0.323 5.854,0.573 0.49,0.25 10 false TR+ 5.01,4.302 6.646,4.667 1.635,0.365 10 false Main Body ECU (Multiplex Network Body ECU) 1.479,5.844 1.708,6.073 0.229,0.229 10 false E 2.448,5.844 2.677,6.073 0.229,0.229 10 false UL 1.26,5.854 1.417,6.052 0.156,0.198 10 false 2 2.75,5.854 2.906,6.052 0.156,0.198 10 false 3 5.073,5.844 5.385,6.063 0.313,0.219 10 false 16 5.354,5.979 5.917,6.208 0.563,0.229 10 false TSW5 1.396,6.354 1.708,6.563 0.313,0.208 10 false U5 1.396,6.521 2.594,6.875 1.198,0.354 10 false Back Door Opener Switch Assembly 5.375,6.49 6.24,6.667 0.865,0.177 10 false O200 5.365,6.677 6.896,7.063 1.531,0.385 10 false Certification ECU (Smart Key ECU Assembly)*2 0.667,7.417 2.823,7.677 2.156,0.26 10 false : CAN Communication Line 2.781,7.406 5.115,7.635 2.333,0.229 10 false *2: w/ Smart Entry and Start System 2.771,7.094 5.177,7.323 2.406,0.229 10 false *1: w/o Smart Entry and Start System 4.26,5.844 4.583,6.052 0.323,0.208 10 false *2 5.365,3.781 6.094,4.063 0.729,0.281 10 false BDSU*1 4.25,3.781 4.563,4 0.313,0.219 10 false *1 3.563,3.021 4.99,3.458 1.427,0.438 10 false Power Distribution Box Assembly 5.021,0.479 5.333,0.698 0.313,0.219 10 false MB 5.083,2.417 5.396,2.635 0.313,0.219 10 false 19 5.094,0.292 5.406,0.51 0.313,0.219 10 false 5 5.01,3.875 5.323,4.094 0.313,0.219 10 false I85 5.021,3.698 5.333,3.917 0.313,0.219 10 false 19 5.031,2.604 5.344,2.823 0.313,0.219 10 false MB 0.656,2.927 0.969,3.146 0.313,0.219 10 false U4 3.906,1.292 4.792,1.469 0.885,0.177 10 false DOOR BACK 6.646,0.938 6.979,1.104 0.333,0.167 10 false IC 6.667,2.5 7,2.667 0.333,0.167 10 false IC 6.677,3.792 7.01,3.958 0.333,0.167 10 false IC 3.073,2.063 3.385,2.281 0.313,0.219 10 false 8F 2.333,0.979 2.646,1.198 0.313,0.219 10 false 8C 2.333,0.771 2.646,0.99 0.313,0.219 10 false 41 2.313,0.479 2.625,0.698 0.313,0.219 10 false 8H 2.375,0.271 2.688,0.49 0.313,0.219 10 false 1 2.854,0.615 3.729,0.844 0.875,0.229 10 false DOOR BACK 0.302,0.458 1.708,0.698 1.406,0.24 10 false from Auxiliary Battery 6.271,1.927 6.521,2.104 0.25,0.177 10 false +B 6.281,3.208 6.531,3.406 0.25,0.198 10 false +B 6.823,4.896 7.146,5.104 0.323,0.208 10 false *2

CAUTION / NOTICE / HINT

NOTICE:
·

When using the GTS with the vehicle ignition switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry&Start(CAN). While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.

·

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

·

If the main body ECU (multiplex network body ECU) is replaced, refer to Service Bulletin.*1

*1: w/ Smart Entry and Start System

·

The power door lock control system uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the power door lock control system after confirming that the communication systems are functioning properly.

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



PROCEDURE

1.PERFORM ACTIVE TEST USING GTS (TRUNK LID / BACK DOOR OPEN)
a.

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

Body Electrical > Main Body > Active Test
Tester Display Measurement Item Control Range Diagnostic Note
Trunk Lid / Back Door Open Back door lock motor OFF/ON -
Body Electrical > Main Body > Active Test
Tester Display
Trunk Lid / Back Door Open
50004 449 15
OK:

The back door lock assembly with courtesy light switch unlatches when ON is selected.



Result:
Result Proceed to
OK (w/ Smart Entry and Start System) A
OK (w/o Smart Entry and Start System) B
NG C



A

GO TO ENTRY AND START SYSTEM (for Entry Function)

B

2.INSPECT BACK DOOR OPENER SWITCH ASSEMBLY

C

4.INSPECT BACK DOOR LOCK WITH COURTESY LIGHT SWITCH ASSEMBLY
2.INSPECT BACK DOOR OPENER SWITCH ASSEMBLY

Click hereVehicle Exterior>DOOR / HATCH>BACK DOOR OPENER SWITCH>INSPECTION

Result:
Proceed to
OK
NG



OK

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

NG

REPLACE BACK DOOR OPENER SWITCH ASSEMBLY

Click hereVehicle Exterior>DOOR / HATCH>BACK DOOR OPENER SWITCH>REMOVAL


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

Disconnect the U5 back door opener switch assembly connector.


b.

Disconnect the I85 main body ECU (multiplex network body ECU) connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
U5-3 (UL) - I85-19 (BDSU) Always Below 1 Ω
U5-2 (E) - Body ground Always Below 1 Ω
U5-3 (UL) - Body ground Always 10 kΩ or higher
I85-19 (BDSU) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

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


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 - POWER DISTRIBUTION BOX ASSEMBLY 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 - POWER DISTRIBUTION BOX ASSEMBLY AND BODY GROUND)
a.

Disconnect the U4 back door lock with courtesy light switch assembly connector.


b.

Disconnect the 8F power distribution box assembly connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
U4-1 (ACT+) - 8F-42 Always Below 1 Ω
U4-3 (D+) - 8F-2 Always Below 1 Ω
U4-2 (ACT-) - Body ground Always Below 1 Ω
U4-1 (ACT+) - Body ground Always 10 kΩ or higher
8F-42 - Body ground Always 10 kΩ or higher
U4-3 (D+) - Body ground Always 10 kΩ or higher
8F-2 - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

6.INSPECT POWER DISTRIBUTION BOX ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.INSPECT POWER DISTRIBUTION BOX ASSEMBLY
a.

Remove the power distribution box assembly.

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


b.

Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.


c.

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

E436390C08
1.5,0.25 2,0.5 0.5,0.25 5,0.5 5.5,0.75 0.5,0.25 6.031,1.302 5.865,0.99 true 0.115,0.063 0.427,0.219 0.313,0.156 10 false *a 5.177,0.563 5.521,0.792 0.344,0.229 10 false MB 6.042,1.354 6.438,1.583 0.396,0.229 10 false BCTY 1.677,0.292 2.021,0.521 0.344,0.229 10 false 8F
*a Component without harness connected
(Power Distribution Box Assembly) 		- -


Standard Resistance:
Tester Connection Condition Specified Condition
MB-19 (BCTY) - 8F-2 Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

7.CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - BATTERY AND BODY GROUND)

NG

REPLACE POWER DISTRIBUTION BOX ASSEMBLY

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


7.CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - BATTERY AND BODY GROUND)
a.

Disconnect the power distribution box assembly connectors.

E507535C02
1.542,0.219 1.875,0.458 0.333,0.24 4.875,0.188 5.208,0.427 0.333,0.24 4.948,0.219 5.26,0.417 0.313,0.198 10 false 8C 1.615,0.25 1.927,0.448 0.313,0.198 10 false 8H 0.167,0.125 0.479,0.323 0.313,0.198 10 false *a
*a Component without harness connected
(Power Distribution Box Assembly) 		- -



b.

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

Standard Voltage:
Tester Connection Switch Condition Specified Condition
8H-1 - Body ground Ignition switch off 11 to 14 V



c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
8C-41 - Body ground Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

8.CHECK POWER DISTRIBUTION BOX ASSEMBLY (DOOR BACK RELAY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

8.CHECK POWER DISTRIBUTION BOX ASSEMBLY (DOOR BACK RELAY)
a.

Remove the power distribution box assembly.

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


b.

Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.


c.

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

E507536C02
1.969,1.813 2.385,2.063 0.417,0.25 1.979,0.146 2.385,0.396 0.406,0.25 5.135,0.094 5.521,0.344 0.385,0.25 5.417,1.5 5.802,1.74 0.385,0.24 5.521,1.531 5.833,1.729 0.313,0.198 10 false 8H 2.083,1.854 2.396,2.052 0.313,0.198 10 false MB 0.073,0.042 0.385,0.24 0.313,0.198 10 false *a 2.094,0.188 2.406,0.385 0.313,0.198 10 false 8F 5.229,0.125 5.542,0.323 0.313,0.198 10 false 8C
*a Front view of wire harness connector
(to Power Distribution Box Assembly) 		- -


Standard Resistance:
Tester Connection Condition Specified Condition
8C-41 - 8F-42 Auxiliary battery voltage applied between 8H-1 and MB-5(TR+) 10 kΩ or higher
8C-41 - 8F-42 Auxiliary battery voltage not applied between 8H-1 and MB-5(TR+) Below 1 Ω



d.

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

Standard Voltage:
Tester Connection Condition Specified Condition
8F-42 - Auxiliary battery negative (-) terminal Auxiliary battery voltage applied between 8H-1 and MB-5(TR+) 11 to 14 V



Result:
Proceed to
OK
NG



OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

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


NG

REPLACE POWER DISTRIBUTION BOX ASSEMBLY

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