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

SEAT  FRONT POWER SEAT CONTROL SYSTEM(w/ Memory)  B2650  Slide Sensor Malfunction  


DESCRIPTION

When the position control ECU assembly does not receive a slide motor position sensor signal despite the seat having been moved forward or backward by power seat motor operation, this DTC is stored.

DTC No. Detection Item DTC Detection Condition Trouble Area
B2650 Slide Sensor Malfunction Slide motor position sensor signal not received when power seat moved forward or backward
·

Position control ECU assembly

·

Slide motor (front seat adjuster assembly LH)

·

Wire harness or connector



WIRING DIAGRAM

for SFTM Made


B636384E01
1.219,2.479 2.229,2.76 1.01,0.281 10 false U25 4.802,1.063 5.26,1.26 0.458,0.198 10 false U33 4.813,0.542 5.271,0.74 0.458,0.198 10 false U33 4.802,2.083 5.26,2.281 0.458,0.198 10 false U35 4.802,1.573 5.26,1.771 0.458,0.198 10 false U35 5.219,0.542 5.833,0.74 0.615,0.198 10 false SLD+ 5.219,1.052 5.833,1.25 0.615,0.198 10 false SLD- 5.229,1.563 5.844,1.76 0.615,0.198 10 false SSRS 5.229,2.083 5.844,2.281 0.615,0.198 10 false SGND 1.219,2.615 2.906,2.813 1.688,0.198 10 false Slide Motor 4.75,2.594 6.99,2.875 2.24,0.281 10 false Position Control ECU Assembly 0.604,3.083 4.594,3.365 3.99,0.281 10 false Front Seat Adjuster Assembly LH 4.885,0.313 5.042,0.51 0.156,0.198 10 false 1 4.896,0.823 5.052,1.021 0.156,0.198 10 false 5 4.844,1.333 5.156,1.531 0.313,0.198 10 false 26 4.833,1.844 5.146,2.042 0.313,0.198 10 false 12 2.323,1.458 3.083,1.677 0.76,0.219 10 false 5 2.323,0.438 2.479,0.635 0.156,0.198 10 false 4 2.302,0.958 3.302,1.323 1,0.365 10 false 3 2.313,1.979 3.083,2.25 0.771,0.271 10 false 6


for GTMC Made


B636384E03
1.219,2.479 2.229,2.76 1.01,0.281 10 false U47 4.802,1.063 5.26,1.26 0.458,0.198 10 false U54 4.823,0.542 5.281,0.74 0.458,0.198 10 false U54 4.802,2.083 5.26,2.281 0.458,0.198 10 false U35 4.802,1.573 5.26,1.771 0.458,0.198 10 false U35 5.219,0.542 5.833,0.74 0.615,0.198 10 false SLD+ 5.219,1.052 5.833,1.25 0.615,0.198 10 false SLD- 5.229,1.563 5.844,1.76 0.615,0.198 10 false SSRS 5.229,2.083 5.844,2.281 0.615,0.198 10 false SGND 1.219,2.635 2.906,2.833 1.688,0.198 10 false Slide Motor 4.75,2.594 6.99,2.875 2.24,0.281 10 false Position Control ECU Assembly 0.604,3.083 4.594,3.365 3.99,0.281 10 false Front Seat Adjuster Assembly LH 4.885,0.313 5.042,0.51 0.156,0.198 10 false 1 4.896,0.823 5.052,1.021 0.156,0.198 10 false 5 4.844,1.333 5.156,1.531 0.313,0.198 10 false 26 4.844,1.844 5.156,2.042 0.313,0.198 10 false 12 2.323,1.458 3.083,1.677 0.76,0.219 10 false 2 2.333,0.438 2.49,0.635 0.156,0.198 10 false 4 2.313,0.958 3.313,1.323 1,0.365 10 false 1 2.323,1.979 3.094,2.25 0.771,0.271 10 false 3


PROCEDURE

1.CLEAR DTC
a.

Clear the DTCs.

Body Electrical > Driver Seat > Clear DTCs
50002 162

Result:
Proceed to
NEXT



NEXT

2.CHECK FOR DTC
2.CHECK FOR DTC
a.

Check for DTCs.

Body Electrical > Driver Seat > Trouble Codes
50001 162
OK:

DTC B2650 is not output.



Result:
Result Proceed to
DTC B2650 is not output A
DTC B2650 output B



A

USE SIMULATION METHOD TO CHECK

Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING


B

3.PERFORM ACTIVE TEST USING GTS (SEAT SLIDE OPERATION)
3.PERFORM ACTIVE TEST USING GTS (SEAT SLIDE OPERATION)
a.

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

Body Electrical > Driver Seat > Active Test
Tester Display Measurement Item Control Range Diagnostic Note
Seat Slide Operation Seat slide operation OFF/Rear/Front -
Body Electrical > Driver Seat > Active Test
Tester Display
Seat Slide Operation
50004 162 4
OK:

Slide motor operates normally.



Result:
Proceed to
OK
NG



OK

4.CHECK POSITION CONTROL ECU ASSEMBLY (SLIDE MOTOR CIRCUIT)

NG

7.INSPECT SLIDE MOTOR (FRONT SEAT ADJUSTER ASSEMBLY LH)
4.CHECK POSITION CONTROL ECU ASSEMBLY (SLIDE MOTOR CIRCUIT)
a.

Disconnect the U25*1 or U47*2 slide motor (front seat adjuster assembly LH) connector.

*1: for SFTM Made

*2: for GTMC Made



b.

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

Standard Voltage:
for SFTM Made
Tester Connection Condition Specified Condition

Click Location & Routing(U25)Location & Routing

Click Connector(U25)Seat>Front Seat Wire RH / Front Seat Wire LH>Slide Motor (Front Seat Adjuster Assembly LH)

U25-5 - U25-6 Slide switch on 4.8 to 5.1 V

for GTMC Made
Tester Connection Condition Specified Condition

Click Location & Routing(U47)Location & Routing

Click Connector(U47)Seat>Front Seat Wire RH / Front Seat Wire LH>Slide Motor (Front Seat Adjuster Assembly LH)

U47-2 - U47-3 Slide switch on 4.8 to 5.1 V



Result:
Proceed to
OK
NG



OK

5.CHECK SLIDE MOTOR (FRONT SEAT ADJUSTER ASSEMBLY LH)

NG

6.CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - SLIDE MOTOR (FRONT SEAT ADJUSTER ASSEMBLY LH))
5.CHECK SLIDE MOTOR (FRONT SEAT ADJUSTER ASSEMBLY LH)
a.
B647832C01
1.531,0.167 1.938,0.438 0.406,0.271 1.542,1.813 1.948,2.083 0.406,0.271 1.625,1.865 2.083,2.063 0.458,0.198 10 false U47 1.604,0.219 2.063,0.417 0.458,0.198 10 false U25 0.24,0.177 0.698,0.375 0.458,0.198 10 false *a 2,0.229 2.458,0.427 0.458,0.198 10 false *A 2.021,1.865 2.479,2.063 0.458,0.198 10 false *B
*A for SFTM Made
*B for GTMC Made
*a Component with harness connected
(Slide Motor (Front Seat Adjuster Assembly LH))


Reconnect the U25*1 or U47*2 slide motor (front seat adjuster assembly LH) connector.

*1: for SFTM Made

*2: for GTMC Made



b.

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

Standard Voltage:
for SFTM Made
Tester Connection Condition Specified Condition

Click Location & Routing(U25)Location & Routing

Click Connector(U25)Seat>Front Seat Wire RH / Front Seat Wire LH>Slide Motor (Front Seat Adjuster Assembly LH)

U25-5 - Body ground Slide motor operating 4.5 to 4.8 V

for GTMC Made
Tester Connection Condition Specified Condition

Click Location & Routing(U47)Location & Routing

Click Connector(U47)Seat>Front Seat Wire RH / Front Seat Wire LH>Slide Motor (Front Seat Adjuster Assembly LH)

U47-2 - Body ground Slide motor operating 4.5 to 4.8 V



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

REPLACE SLIDE MOTOR (FRONT SEAT ADJUSTER ASSEMBLY LH)

for SFTM Made: Click hereVehicle Interior>SEAT>FRONT SEAT ASSEMBLY (for SFTM Made Power Seat)>DISASSEMBLY

for GTMC Made: Click hereVehicle Interior>SEAT>FRONT SEAT ASSEMBLY (for GTMC Made Power Seat)>DISASSEMBLY


6.CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - SLIDE MOTOR (FRONT SEAT ADJUSTER ASSEMBLY LH))
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,U25)Location & Routing

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

Click Connector(U25)Seat>Front Seat Wire RH / Front Seat Wire LH>Slide Motor (Front Seat Adjuster Assembly LH)

U35-26 (SSRS) - U25-5 Always Below 1 Ω
U35-26 (SSRS) or U25-5 - Body ground Always 10 kΩ or higher
U35-12 (SGND) - U25-6 Always Below 1 Ω
U35-12 (SGND) or U25-6 - Body ground Always 10 kΩ or higher

for GTMC Made
Tester Connection Condition Specified Condition

Click Location & Routing(U35,U47)Location & Routing

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

Click Connector(U47)Seat>Front Seat Wire RH / Front Seat Wire LH>Slide Motor (Front Seat Adjuster Assembly LH)

U35-26 (SSRS) - U47-2 Always Below 1 Ω
U35-26 (SSRS) or U47-2 - Body ground Always 10 kΩ or higher
U35-12 (SGND) - U47-3 Always Below 1 Ω
U35-12 (SGND) or U47-3 - Body ground Always 10 kΩ or higher



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

7.INSPECT SLIDE MOTOR (FRONT SEAT ADJUSTER ASSEMBLY LH)

for SFTM Made: Click hereVehicle Interior>SEAT>FRONT SEAT ASSEMBLY (for SFTM Made Power Seat)>INSPECTION

for GTMC Made: Click hereVehicle Interior>SEAT>FRONT SEAT ASSEMBLY (for GTMC Made Power Seat)>INSPECTION

Result:
Proceed to
OK
NG



OK

8.CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - SLIDE MOTOR (FRONT SEAT ADJUSTER ASSEMBLY LH))

NG

REPLACE SLIDE MOTOR (FRONT SEAT ADJUSTER ASSEMBLY LH)

for SFTM Made: Click hereVehicle Interior>SEAT>FRONT SEAT ASSEMBLY (for SFTM Made Power Seat)>DISASSEMBLY

for GTMC Made: Click hereVehicle Interior>SEAT>FRONT SEAT ASSEMBLY (for GTMC Made Power Seat)>DISASSEMBLY


8.CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - SLIDE MOTOR (FRONT SEAT ADJUSTER ASSEMBLY LH))
a.

Disconnect the U33*1 or U54*2 position control ECU assembly connector.

*1: for SFTM Made

*2: for GTMC Made



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(U33,U25)Location & Routing

Click Connector(U33)Seat>Front Seat Wire RH / Front Seat Wire LH>Position Control ECU Assembly LH

Click Connector(U25)Seat>Front Seat Wire RH / Front Seat Wire LH>Slide Motor (Front Seat Adjuster Assembly LH)

U33-1 (SLD+) - U25-4 Always Below 1 Ω
U33-1 (SLD+) or U25-4 - Body ground Always 10 kΩ or higher
U33-5 (SLD-) - U25-3 Always Below 1 Ω
U33-5 (SLD-) or U25-3 - Body ground Always 10 kΩ or higher

for GTMC Made
Tester Connection Condition Specified Condition

Click Location & Routing(U54,U47)Location & Routing

Click Connector(U54)Seat>Front Seat Wire RH / Front Seat Wire LH>Position Control ECU Assembly LH

Click Connector(U47)Seat>Front Seat Wire RH / Front Seat Wire LH>Slide Motor (Front Seat Adjuster Assembly LH)

U54-1 (SLD+) - U47-4 Always Below 1 Ω
U54-1 (SLD+) or U47-4 - Body ground Always 10 kΩ or higher
U54-5 (SLD-) - U47-1 Always Below 1 Ω
U54-5 (SLD-) or U47-1 - Body ground Always 10 kΩ or higher



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