Toyota Tundra (2015 year). Manual — part 2466
Last Modified: 9-16-2014
6.6 J
Doc ID: RM000003N9I02SX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: SEAT: FRONT POWER SEAT CONTROL SYSTEM (w/ Memory): Power Seat does not Return to Memorized
Position; 2015 MY Tundra [08/2014 - ]
Power Seat does not Return to Memorized Position
DESCRIPTION
(driver side junction block assembly) sends a recall request signal to the position control ECU and switch
assembly. The position control ECU and switch assembly operates each motor to achieve each memorized position
value.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
1.
CHECK CAN COMMUNICATION SYSTEM
(a) Use the Techstream to check if the CAN communication system is functioning normally
.
OK:
CAN communication DTC is not output.
NG
Go to CAN COMMUNICATION SYSTEM
SEAT: FRONT POWER SEAT CONTROL SYSTEM (w/ Memory): Pow...
OK
OK
OK
2.
CHECK FRONT POWER SEAT OPERATION
.
OK:
Go to PROBLEM SYMPTOMS TABLE
3.
CHECK SEAT POSITION MEMORY FUNCTION
.
NOTICE:
The seat position will not be recorded if the SET switch and 2 memory switches are pressed simultaneously.
If a memorizing operation has failed, release all switches. The seat memory function does not operate
unless the switches are released.
OK:
Seat position memory function operates normally.
NG
Go to OTHER FLOW CHART (Power Seat Position is
not Memorized)
4.
CHECK SEAT POSITION RESTORING FUNCTION
.
Turn the ignition switch is off.
Turn the ignition switch to ON, and shift lever in P.*1
Turn the ignition switch is off within 180 seconds after the driver door is closed and opened.*2
SEAT: FRONT POWER SEAT CONTROL SYSTEM (w/ Memory): Pow...
A
Turn the ignition switch is off within 60 seconds after the driver door is opened and closed.*3
Result
RESULT
PROCEED TO
Seat restoring function does not operate at all.
A
Seat restoring function does not operate when the condition is [*1].
B
Seat restoring function does not operate when the condition is [*2].
Seat restoring function does not operate when the condition is [*3].
C
B
GO TO STEP 10
C
GO TO STEP 11
5.
READ VALUE USING TECHSTREAM (SEAT MEMORY)
(a) Perform the seat position memorized function for the M1 switch and M2 switch
.
(b) Connect the Techstream to the DLC3.
(c) Turn the ignition switch to ON.
(d) Turn the Techstream on.
(e) Enter the following menus: Body Electrical / Driver Seat / Data List.
(f) Read the Data List according to the display on the Techstream.
Driver Seat
TESTER
DISPLAY
MEASUREMENT ITEM/RANGE
NORMAL CONDITION
DIAGNOSTIC
NOTE
Seat Memory
No1
Seat position memorized with M1 switch / Mem or
Not Mem
Mem: Memorized
Not Mem: Not
memorized
-
Seat Memory
No2
Seat position memorized with M2 switch / Mem or
Not Mem
Mem: Memorized
Not Mem: Not
memorized
-
OK:
Mem appears on the Techstream screen.
NG
Go to OTHER FLOW CHART (Power Seat Position is
SEAT: FRONT POWER SEAT CONTROL SYSTEM (w/ Memory): Pow...
OK
NEXT
NEXT
not Memorized)
6.
REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY
(a) Temporarily replace the outer mirror control ECU assembly with a new or normally functioning
one
.
7.
CHECK SEAT POSITION RESTORING FUNCTION
(a) Perform a seat position restoring function
.
(b) Check that the buzzer sounds for 0.1 seconds and the seat automatically moves to the memorized
position.
NOTICE:
The seat position will not return to the memorized position if 2 seat memory switches are pressed
simultaneously.
If a restoring operation has failed, release all switches. The seat memory restoring function does not
operate unless the switches are released.
OK:
Seat position restoring function operates normally.
NG
GO TO STEP 8
OK
END (OUTER MIRROR CONTROL ECU ASSEMBLY
WAS DEFECTIVE)
8.
REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY
(a) Temporarily replace the position control ECU and switch assembly with a new or normally
functioning one
.
SEAT: FRONT POWER SEAT CONTROL SYSTEM (w/ Memory): Pow...
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