Driver Side Seat Memory Switch Circuit: Procedure

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

   Driver seat

   Tester Display	Measurement Item / Range	Normal Condition	Diagnostic Note
   M3 Switch	M3 switch signal / ON or OFF	ON: M3 switch is ON OFF: M3 switch is OFF	-
   M2 Switch	M2 switch signal / ON or OFF	ON: M2 switch is ON OFF: M2 switch is OFF	-
   M1 Switch	M1 switch signal / ON or OFF	ON: M1 switch is ON OFF: M1 switch is OFF	-
   SET Switch	SET switch signal / ON or OFF	ON: SET switch is ON OFF: SET switch is OFF	-

   OK

   On the Techstream screen, each item changes between ON and OFF according to the above chart.

NG → See step   2 

OK → See step   5 

1. Remove the seat memory switch LH. Refer to REMOVAL .
2. Measure the resistance according to the value(s) in the table below.
   Fig 1: Identifying Seat Memory Switch LH

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   M6-1 (MRY) - M6-5 (E)	SET switch is pressed	Below 1 Ω
   M6-2 (M1) - M6-5 (E)	M1 switch is pressed	Below 1 Ω
   M6-3 (M2) - M6-5 (E)	M2 switch is pressed	Below 1 Ω
   M6-4 (M3) - M6-5 (E)	M3 switch is pressed	Below 1 Ω
   M6-1 (MRY) - M6-5 (E)	SET switch is not pressed	10 kΩ or higher
   M6-2 (M1) - M6-5 (E)	M1 switch is not pressed	10 kΩ or higher
   M6-3 (M2) - M6-5 (E)	M2 switch is not pressed	10 kΩ or higher
   M6-4 (M3) - M6-5 (E)	M3 switch is not pressed	10 kΩ or higher

NG → See step   6 

OK: Go to next step 

1. Disconnect the outer mirror control ECU LH connector.
   Fig 2: Identifying Outer Mirror Control ECU LH Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   M10-22 (M1) - M6-2 (M1)	Always	Below 1 Ω
   M10-23 (M2) - M6-3 (M2)	Always	Below 1 Ω
   M10-24 (M3) - M6-4 (M3)	Always	Below 1 Ω
   M10-25 (MM) - M6-1 (MRY)	Always	Below 1 Ω
   M10-26 (MSWE) - M6-5 (E)	Always	Below 1 Ω
   M10-22 (M1) - Body ground	Always	10 kΩ or higher
   M10-23 (M2) - Body ground	Always	10 kΩ or higher
   M10-24 (M3) - Body ground	Always	10 kΩ or higher
   M10-25 (MM) - Body ground	Always	10 kΩ or higher
   M10-26 (MSWE) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   4