Front Passenger Side Seat Memory Switch Circuit: Procedure

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

   Passenger 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 RH. Refer to REMOVAL .
2. Measure the resistance according to the value(s) in the table below.
   Fig 1: Identifying Seat Memory Switch RH

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   L7-1 (MMRY) - L7-5 (E)	SET switch is pressed	Below 1 Ω
   L7-2 (1) - L7-5 (E)	M1 switch is pressed	Below 1 Ω
   L7-3 (2) - L7-5 (E)	M2 switch is pressed	Below 1 Ω
   L7-4 (3) - L7-5 (E)	M3 switch is pressed	Below 1 Ω
   L7-1 (MMRY) - L7-5 (E)	SET switch is not pressed	10 kΩ or higher
   L7-2 (1) - L7-5 (E)	M1 switch is not pressed	10 kΩ or higher
   L7-3 (2) - L7-5 (E)	M2 switch is not pressed	10 kΩ or higher
   L7-4 (3) - L7-5 (E)	SET switch is not pressed	10 kΩ or higher

NG → See step   6 

OK: Go to next step 

1. Disconnect the outer mirror control ECU RH connector.
   Fig 2: Identifying Outer Mirror Control ECU RH 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
   L10-22 (M1) - L7-2 (1)	Always	Below 1 Ω
   L10-23 (M2) - L7-3 (2)	Always	Below 1 Ω
   L10-24 (M3) - L7-4 (3)	Always	Below 1 Ω
   L10-25 (MM) - L7-1 (MMRY)	Always	Below 1 Ω
   L10-26 (MSWE) - L7-5 (E)	Always	Below 1 Ω
   L10-22 (M1) - L7-2 (1)	Always	10 kΩ or higher
   L10-23 (M2) - L7-3 (2)	Always	10 kΩ or higher
   L10-25 (MM) - L7-1 (MMRY)	Always	10 kΩ or higher
   L10-26 (MSWE) - L7-5 (E)	Always	10 kΩ or higher
   L10-26 (MSWE) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   4