RM38N0EC _58 Vehicle Interior _111839 SEAT _0505694 FRONT POWER SEAT CONTROL SYSTEM(w/ Memory) J

SEAT  FRONT POWER SEAT CONTROL SYSTEM(w/ Memory)  Power Seat Power Easy Access System Function does not Operate  


DESCRIPTION

·

Perform either of the following and check that the driver seat moves rearward:

-

With the ignition switch off and the shift lever in P, unfasten the driver seat seat belt.

-

With the shift lever in P and the driver seat seat belt unfastened, turn the ignition switch off.


·

Perform either of the following and check that the driver seat moves forward:

-

With the shift lever in P, fasten the driver seat seat belt.

-

With the shift lever in P, turn the ignition switch from off to ON.



WIRING DIAGRAM

for SFTM Made


B584175E13
0.25,2.667 1.948,3.063 1.698,0.396 10 false Main Body ECU (Multiplex Network Body ECU) 2.396,2.823 4.51,3.094 2.115,0.271 10 false Position Control ECU Assembly 2.396,2.646 3.219,2.865 0.823,0.219 10 false U35 0.563,3.448 4.229,3.646 3.667,0.198 10 false : CAN Communication Line 3.438,1.552 4.052,1.75 0.615,0.198 10 false RDC 3.854,1.427 4.167,1.625 0.313,0.198 10 false 27 4.719,1.333 4.875,1.531 0.156,0.198 10 false 5 6,1.344 6.156,1.542 0.156,0.198 10 false 2 4.375,1.927 6.615,2.344 2.24,0.417 10 false Front Seat Inner Belt Assembly LH 4.635,1.552 5.094,1.75 0.458,0.198 10 false U26 5.927,1.542 6.385,1.74 0.458,0.198 10 false L45 5.729,1.448 5.958,1.656 0.229,0.208 10 false E 4.979,1.438 5.344,1.635 0.365,0.198 10 false RDC


for GTMC Made


B584175E14
0.25,2.667 1.948,3.063 1.698,0.396 10 false Main Body ECU (Multiplex Network Body ECU) 2.396,2.823 4.51,3.094 2.115,0.271 10 false Position Control ECU Assembly 2.396,2.646 3.219,2.865 0.823,0.219 10 false U35 0.563,3.448 4.229,3.646 3.667,0.198 10 false : CAN Communication Line 3.385,1.542 4,1.74 0.615,0.198 10 false DBCL 3.854,1.427 4.167,1.625 0.313,0.198 10 false 27 4.698,1.333 4.854,1.531 0.156,0.198 10 false 1 6,1.333 6.156,1.531 0.156,0.198 10 false 2 4.375,1.927 6.615,2.344 2.24,0.417 10 false Front Seat Inner Belt Assembly LH 4.635,1.552 5.094,1.75 0.458,0.198 10 false U26 5.938,1.542 6.396,1.74 0.458,0.198 10 false L45 5.729,1.448 5.958,1.656 0.229,0.208 10 false E 4.979,1.438 5.438,1.635 0.458,0.198 10 false RDC


CAUTION / NOTICE / HINT

NOTICE:
·

The front power seat control system uses the CAN communication system. First, confirm that there is no malfunction in the CAN communication system. Refer to the How to Proceed with Troubleshooting procedure.

Click hereVehicle Interior>SEAT>FRONT POWER SEAT CONTROL SYSTEM (w/ Memory)>HOW TO PROCEED WITH TROUBLESHOOTING

·

Before replacing the main body ECU (multiplex network body ECU), refer to Service Bulletin.



HINT:

When troubleshooting a function, first make sure that the function is set to the default setting.

Click hereVehicle Interior>SEAT>FRONT POWER SEAT CONTROL SYSTEM (w/ Memory)>CUSTOMIZE PARAMETERS


PROCEDURE

1.CHECK FRONT POWER SEAT OPERATION
a.

Check that each function of the power seat operates normally by using the front power seat switch LH.

Click hereVehicle Interior>SEAT>FRONT POWER SEAT CONTROL SYSTEM (w/ Memory)>OPERATION CHECK

Result:
Result Proceed to
Power seat functions operate normally A
All power seat functions do not operate B
One or more power seat motors do not operate C




A

2.INSPECT FRONT SEAT INNER BELT ASSEMBLY LH

B

GO TO OTHER FLOW CHART (Front Power Seat does not Operate with Front Power Seat Switch)

Click hereVehicle Interior>SEAT>FRONT POWER SEAT CONTROL SYSTEM (w/ Memory)>Front Power Seat does not Operate with Front Power Seat Switch


C

GO TO OTHER FLOW CHART (One or more Power Seat Motors do not Operate)

Click hereVehicle Interior>SEAT>FRONT POWER SEAT CONTROL SYSTEM (w/ Memory)>One or more Power Seat Motors do not Operate


2.INSPECT FRONT SEAT INNER BELT ASSEMBLY LH

Click hereVehicle Interior>SEAT BELT>FRONT SEAT INNER BELT ASSEMBLY (for Power Seat)>INSPECTION

Result:
Proceed to
OK
NG



OK

3.CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT SEAT INNER BELT ASSEMBLY LH - BODY GROUND)

NG

REPLACE FRONT SEAT INNER BELT ASSEMBLY LH

Click hereVehicle Interior>SEAT BELT>FRONT SEAT INNER BELT ASSEMBLY (for Power Seat)>REMOVAL


3.CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT SEAT INNER BELT ASSEMBLY LH - BODY GROUND)
a.

Disconnect the U35 position control ECU assembly connector.


b.

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

Standard Resistance:
for SFTM Made
Tester Connection Condition Specified Condition

Click Location & Routing(U35,U26,L45)Location & Routing

Click Connector(U35)Seat>Front Seat Wire RH / Front Seat Wire LH>Position Control ECU Assembly LH

Click Connector(U26)Seat>Front Seat Wire RH / Front Seat Wire LH>Front Seat Inner Belt Assembly LH

Click Connector(L45)Seat>No. 2 Floor Wire>Front Seat Inner Belt Assembly LH

U35-27 (RDC) - U26-5 (RDC) Always Below 1 Ω
U35-27 (RDC) or U26-5 (RDC) - Body ground Always 10 kΩ or higher
L45-2 (E) - Body ground Always Below 1 Ω

for GTMC Made
Tester Connection Condition Specified Condition

Click Location & Routing(U35,U26,L45)Location & Routing

Click Connector(U35)Seat>Front Seat Wire RH / Front Seat Wire LH>Position Control ECU Assembly LH

Click Connector(U26)Seat>Front Seat Wire RH / Front Seat Wire LH>Front Seat Inner Belt Assembly LH

Click Connector(L45)Seat>No. 2 Floor Wire>Front Seat Inner Belt Assembly LH

U35-27 (DBCL) - U26-1 (RDC) Always Below 1 Ω
U35-27 (DBCL) or U26-1 (RDC) - Body ground Always 10 kΩ or higher
L45-2 (E) - Body ground Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

REPLACE POSITION CONTROL ECU ASSEMBLY

for SFTM Made: Click hereVehicle Interior>SEAT>POWER SEAT CONTROL ECU (for SFTM Made)>REMOVAL

for GTMC Made: Click hereVehicle Interior>SEAT>POWER SEAT CONTROL ECU (for GTMC Made)>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR