Power Seat Position is not Memorized [06/2015 - ]: Procedure

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

   Refer to OPERATION CHECK [06/2015 - ]

   OK

   Each function of the power seat operates normally using the front power seat switch LH.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

GO TO PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [06/2015 - ] 

Result: 

OK 

See step  2

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Mirror L / Data List.
5. Read the Data List according to the display on the Techstream.

   Body Electrical > Mirror L > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Seat Memory Switch1	M1 switch	ON or OFF	ON: M1 switch on OFF: M1 switch off	-
   Seat Memory Switch2	M2 switch	ON or OFF	ON: M2 switch on OFF: M2 switch off	-
   Seat Memory Set SW	SET switch	ON or OFF	ON: SET switch on OFF: SET switch off	-

   Body Electrical > Mirror L > Data List 

   Tester Display
   Seat Memory Switch1
   Seat Memory Switch2
   Seat Memory Set SW

   OK

   ON or OFF is displayed on the Techstream according to the table above.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

See step  8

Result: 

OK 

See step  3

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Driver Seat / Active Test.
5. Read the Data List according to the display on the Techstream.

   Body Electrical > Driver Seat > Active Test 

   Tester Display	Measurement Item	Control Range	Diagnostic Note
   Buzzer	Buzzer operation	OFF/ON	-

   Body Electrical > Driver Seat > Active Test 

   Tester Display
   Buzzer

   OK

   Buzzer sounds normally.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE FRONT POWER SEAT SWITCH LH. Refer to  REMOVAL [06/2015 - 11/2018]  , or refer to  REMOVAL [11/2018 - ] 

Result: 

OK 

See step  4

1. Temporarily replace the outer mirror control ECU assembly (driver door) with a new or known good one.

   Refer to REMOVAL [06/2015 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  5

1. Check that the seat position memory and restoring function.

   Refer to OPERATION CHECK [06/2015 - ]

   OK

   Seat position memory and restoring function operate normally.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END (OUTER MIRROR CONTROL ECU ASSEMBLY (DRIVER DOOR) WAS DEFECTIVE) 

Result: 

NG 

See step  6

1. Temporarily replace the front power seat switch LH with a new or known good one.

   Refer to REMOVAL [06/2015 - 11/2018] , or refer to REMOVAL [11/2018 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  7

1. Check that the seat position memory and restoring function.

   Refer to OPERATION CHECK [06/2015 - ]

   OK

   Seat position memory and restoring function operate normally.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END (FRONT POWER SEAT SWITCH LH WAS DEFECTIVE) 

Result: 

NG 

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [06/2015 - 11/2018]  , or refer to  REMOVAL [11/2018 - ] 

1. Remove the seat memory switch LH.

   Refer to REMOVAL [06/2015 - ]

2. Inspect the seat memory switch LH.

   Refer to INSPECTION [06/2015 - ]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE SEAT MEMORY SWITCH LH. Refer to  REMOVAL [06/2015 - ] 

Result: 

OK 

See step  9

1. Disconnect the L10 outer mirror control ECU assembly (driver door) connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   L10-1 (MM) - N2-8 (MRY)	Always	Below 1 Ω
   L10-1 (MM) - Body ground	Always	10 kΩ or higher
   N2-8 (MRY) - Body ground	Always	10 kΩ or higher
   L10-2 (M1) - N2-4 (M1)	Always	Below 1 Ω
   L10-2 (M1) - Body ground	Always	10 kΩ or higher
   N2-4 (M1) - Body ground	Always	10 kΩ or higher
   L10-3 (M2) - N2-3 (M2)	Always	Below 1 Ω
   L10-3 (M2) - Body ground	Always	10 kΩ or higher
   N2-3 (M2) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (DRIVER DOOR). Refer to  REMOVAL [06/2015 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS AND CONNECTOR