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

SEAT  FRONT POWER SEAT CONTROL SYSTEM(w/ Memory)  Wireless Transmitter Memory Function does not Operate  


DESCRIPTION

With the ignition switch ON and the driver door closed, pressing the manual lock or unlock switch on the multiplex network master switch assembly while holding a seat memory switch (M1 or M2 switch) will register the transmitter recognition code into the seat memory switch that was pressed. After registration is completed, the answer back buzzer sounds.

CAUTION / NOTICE / HINT

NOTICE:
·

The seat position will not be stored if the SET switch and 2 or more of the seat memory switches (for example, M1 switch and M2 switch) are pressed simultaneously.

If a memorizing operation has failed, release all of the switches. The seat memory function will not operate unless the switches are released.

·

The seat will not return to the memorized position if 2 or more of the seat memory switches (for example, M1 switch and M2 switch) are pressed simultaneously.

If a restoring operation has failed, release all of the switches. The seat memory restoring function will not operate unless the switches are released.

·

The front power seat control system (w/ Memory) uses the CAN communication system. First, confirm that there are no malfunctions in the CAN communication system. Refer to How to Proceed with Troubleshooting.

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) or certification ECU (smart key ECU assembly), refer to Service Bulletin.



PROCEDURE

1.CHECK POWER DOOR LOCK CONTROL SYSTEM
a.

Check the manual lock/unlock function by using the door control switch (multiplex network master switch assembly).

Click hereVehicle Interior>DOOR LOCK>POWER DOOR LOCK CONTROL SYSTEM>OPERATION CHECK

OK:

Manual lock/unlock function operates normally.



Result:
Proceed to
OK
NG



OK

2.CHECK SMART KEY SYSTEM (for Start Function)

NG

GO TO POWER DOOR LOCK CONTROL SYSTEM

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


2.CHECK SMART KEY SYSTEM (for Start Function)
a.

Check that the hybrid control system operates normally when the ignition switch is pressed while carrying the electrical key transmitter sub-assembly and with the brake pedal depressed.

OK:

Hybrid control system starts normally.



Result:
Proceed to
OK
NG



OK

3.CHECK SEAT POSITION MEMORY AND RESTORING FUNCTION

NG

GO TO SMART ENTRY AND START SYSTEM (for Start Function)

for HV Model: Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>SMART ENTRY AND START SYSTEM (for Start Function, HV Model)>HOW TO PROCEED WITH TROUBLESHOOTING

for Gasoline Model: Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>SMART ENTRY AND START SYSTEM (for Start Function, Gasoline Model)>HOW TO PROCEED WITH TROUBLESHOOTING


3.CHECK SEAT POSITION MEMORY AND RESTORING FUNCTION
a.

Check the seat position memory and restoring functions.

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

Result:
Result Proceed to
OK A
NG (Seat position memory function does not operate normally) B
NG (Seat position restoring function does not operate normally) C




A

4.READ VALUE USING GTS (FL DOOR COURTESY SWITCH STATUS)

B

GO TO OTHER DIAGNOSIS PROCEDURE (Power Seat Position is not Memorized)

Click hereVehicle Interior>SEAT>FRONT POWER SEAT CONTROL SYSTEM (w/ Memory)>Power Seat Position is not Memorized


C

GO TO OTHER DIAGNOSIS PROCEDURE (Power Seat does not Return to Memorized Position)

Click hereVehicle Interior>SEAT>FRONT POWER SEAT CONTROL SYSTEM (w/ Memory)>Power Seat does not Return to Memorized Position


4.READ VALUE USING GTS (FL DOOR COURTESY SWITCH STATUS)
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
FL Door Courtesy Switch Status Front door courtesy light switch assembly (LH) signal Close or Open Close: Front door LH closed
Open: Front door LH open 		-
Body Electrical > Main Body > Data List
Tester Display
FL Door Courtesy Switch Status
50003 449 31
OK:

On the GTS screen, ON or OFF is displayed accordingly.



Result:
Proceed to
OK
NG



OK

5.CHECK MEMORY CALL FUNCTION (MEMORY REGISTRATION)

NG

GO TO LIGHTING SYSTEM (Front Door Courtesy Switch Circuit)

Click hereVehicle Interior>LIGHTING (INT)>LIGHTING SYSTEM>Front Door Courtesy Switch Circuit


5.CHECK MEMORY CALL FUNCTION (MEMORY REGISTRATION)
a.

Check the memory registration of the memory call function.

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

OK:

A seat position can be registered normally.



Result:
Proceed to
OK
NG



OK

6.READ VALUE USING GTS (MEMORY CALL REGISTRATION)

NG

8.REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
6.READ VALUE USING GTS (MEMORY CALL REGISTRATION)
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
MEM Switch No. with Key ID 1 Memory switch linked with key ID1 NONE, D MEM SW1, D MEM SW2 or D MEM SW3 NONE: No switches linked with key ID1
D MEM SW1: M1 switch linked with key ID1
D MEM SW2: M2 switch linked with key ID1
D MEM SW3: M3 switch linked with key ID1* 		-
MEM Switch No. with Key ID 2 Memory switch linked with key ID2 NONE, D MEM SW1, D MEM SW2 or D MEM SW3 NONE: No switches linked with key ID2
D MEM SW1: M1 switch linked with key ID2
D MEM SW2: M2 switch linked with key ID2
D MEM SW3: M3 switch linked with key ID2* 		-
MEM Switch No. with Key ID 3 Memory switch linked with key ID3 NONE, D MEM SW1, D MEM SW2 or D MEM SW3 NONE: No switches linked with key ID3
D MEM SW1: M1 switch linked with key ID3
D MEM SW2: M2 switch linked with key ID3
D MEM SW3: M3 switch linked with key ID3* 		-
MEM Switch No. with Key ID 4 Memory switch linked with key ID4 NONE, D MEM SW1, D MEM SW2 or D MEM SW3 NONE: No switches linked with key ID4
D MEM SW1: M1 switch linked with key ID4
D MEM SW2: M2 switch linked with key ID4
D MEM SW3: M3 switch linked with key ID4* 		-
MEM Switch No. with Key ID 5 Memory switch linked with key ID5 NONE, D MEM SW1, D MEM SW2 or D MEM SW3 NONE: No switches linked with key ID5
D MEM SW1: M1 switch linked with key ID5
D MEM SW2: M2 switch linked with key ID5
D MEM SW3: M3 switch linked with key ID5* 		-
MEM Switch No. with Key ID 6 Memory switch linked with key ID6 NONE, D MEM SW1, D MEM SW2 or D MEM SW3 NONE: No switches linked with key ID6
D MEM SW1: M1 switch linked with key ID6
D MEM SW2: M2 switch linked with key ID6
D MEM SW3: M3 switch linked with key ID6* 		-
MEM Switch No. with Key ID 7 Memory switch linked with key ID7 NONE, D MEM SW1, D MEM SW2 or D MEM SW3 NONE: No switches linked with key ID7
D MEM SW1: M1 switch linked with key ID7
D MEM SW2: M2 switch linked with key ID7
D MEM SW3: M3 switch linked with key ID7* 		-

*: Although the item is displayed on the GTS, it is not applicable to this vehicle.


Body Electrical > Main Body > Data List
Tester Display
MEM Switch No. with Key ID 1
MEM Switch No. with Key ID 2
MEM Switch No. with Key ID 3
MEM Switch No. with Key ID 4
MEM Switch No. with Key ID 5
MEM Switch No. with Key ID 6
MEM Switch No. with Key ID 7
50003 449 160,161,162,163,164,165,166
OK:

A seat position memory switch is linked to the electrical key transmitter sub-assembly.



Result:
Proceed to
OK
NG



OK

7.CHECK MEMORY CALL FUNCTION (MEMORY REGISTRATION AND AUTOMATIC MEMORY CALL FUNCTION)

NG

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

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


7.CHECK MEMORY CALL FUNCTION (MEMORY REGISTRATION AND AUTOMATIC MEMORY CALL FUNCTION)
a.

Check the memory registration and automatic memory call function of the memory call function.

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

OK:

A seat position can be registered and the automatic memory call function operates normally.



Result:
Proceed to
OK
NG



OK

USE SIMULATION METHOD TO CHECK

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


NG

GO TO OTHER DIAGNOSIS PROCEDURE (Wireless-linked Return Function does not Operate)

Click hereVehicle Interior>SEAT>FRONT POWER SEAT CONTROL SYSTEM (w/ Memory)>Wireless-linked Return Function does not Operate


8.REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
a.

Replace the main body ECU (multiplex network body ECU) with a new or known good one.

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


Result:
Proceed to
NEXT



NEXT

9.CHECK MEMORY CALL FUNCTION (MEMORY REGISTRATION)
9.CHECK MEMORY CALL FUNCTION (MEMORY REGISTRATION)
a.

Check the memory registration of the memory call function.

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

OK:

A seat position can be registered normally.



Result:
Proceed to
OK
NG



OK

END (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) WAS DEFECTIVE)

NG

10.REPLACE POSITION CONTROL ECU ASSEMBLY
11.CHECK MEMORY CALL FUNCTION (MEMORY REGISTRATION)
a.

Check the memory registration of the memory call function.

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

OK:

A seat position can be registered normally.



Result:
Proceed to
OK
NG



OK

END (POSITION CONTROL ECU ASSEMBLY WAS DEFECTIVE)

NG

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)