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

DOOR LOCK  POWER DOOR LOCK CONTROL SYSTEM  All Doors LOCK/UNLOCK Functions do not Operate Via Door Key Cylinder  


DESCRIPTION

The main body ECU (multiplex network body ECU) receives door key cylinder lock or unlock switch signals from the front door lock with motor assembly (for driver door). The main body ECU (multiplex network body ECU) activates the door lock motor on each door according to these signals.

WIRING DIAGRAM

B494156E33
0.646,2.646 2.833,3.021 2.188,0.375 10 false Main Body ECU (Multiplex Network Body ECU) 0.667,2.469 1.125,2.667 0.458,0.198 10 false I85 4,2.302 5.188,2.51 1.188,0.208 10 false L4 4,2.49 6.667,2.875 2.667,0.385 10 false Front Door Lock with Motor Assembly LH 1.938,1.115 2.396,1.313 0.458,0.198 10 false L2 1.865,1.781 2.323,1.979 0.458,0.198 10 false UL3 4.75,1.125 5.208,1.323 0.458,0.198 10 false L 4.479,1.76 4.885,2.083 0.406,0.323 10 false 10 4.51,1.094 5.01,1.406 0.5,0.313 10 false 9 4.729,1.781 5.188,2.021 0.458,0.24 10 false UL 5.698,1.469 6.156,1.708 0.458,0.24 10 false E 5.927,1.458 6.75,1.677 0.823,0.219 10 false 7 2.188,1.115 2.646,1.354 0.458,0.24 10 false 28 2.188,1.792 2.646,2.031 0.458,0.24 10 false 4 1.167,0.875 1.625,1.073 0.458,0.198 10 false +B 1.167,1.542 1.625,1.74 0.458,0.198 10 false +B

CAUTION / NOTICE / HINT

NOTICE:

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

*1: w/ Smart Entry and Start System


PROCEDURE

1.READ VALUE USING GTS (DOOR LOCK SWITCH STATUS BY A MECHANICAL KEY)
a.

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

Body Electrical > Main Body > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
Door Lock Switch Status by a Mechanical Key (D/P Door) Driver door key-linked switch lock signal OFF or ON OFF: Driver door key cylinder not turned to lock position
ON: Driver door key cylinder turned to lock position 		-
Door Unlock Switch Status by a Mechanical Key (D Door) Driver door key-linked switch unlock signal OFF or ON OFF: Driver door key cylinder not turned to unlock position
ON: Driver door key cylinder turned to unlock position 		-
Body Electrical > Main Body > Data List
Tester Display
Door Lock Switch Status by a Mechanical Key (D/P Door)
Door Unlock Switch Status by a Mechanical Key (D Door)
50003 449 11,14
OK:

On the GTS screen, ON or OFF is displayed for each item according to the table above.



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

2.INSPECT FRONT DOOR LOCK WITH MOTOR ASSEMBLY (for Driver Door)
2.INSPECT FRONT DOOR LOCK WITH MOTOR ASSEMBLY (for Driver Door)

Click hereVehicle Interior>DOOR LOCK>FRONT DOOR LOCK>INSPECTION

Result:
Proceed to
OK
NG



OK

3.CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK WITH MOTOR ASSEMBLY LH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND)

NG

REPLACE FRONT DOOR LOCK WITH MOTOR ASSEMBLY (for Driver Door)

Click hereVehicle Interior>DOOR LOCK>FRONT DOOR LOCK>REMOVAL


3.CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK WITH MOTOR ASSEMBLY LH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND)
a.

Disconnect the L4 front door lock with motor assembly LH 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
L4-9 (L) - I85-28 (L2) Always Below 1 Ω
L4-10 (UL) - I85-4 (UL3) Always Below 1 Ω
L4-7 (E) - Body ground Always Below 1 Ω
L4-9 (L) - Body ground Always 10 kΩ or higher
I85-28 (L2) - Body ground Always 10 kΩ or higher
L4-10 (UL) - Body ground Always 10 kΩ or higher
I85-4 (UL3) - 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