Inspection 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 

   DATA LIST REFERENCE
   
   

   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: Go to step 2 

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE  (See PROBLEM SYMPTOMS TABLE  )

1. Remove the seat memory switch LH (See REMOVAL  ).
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance 

   STANDARD RESISTANCE
   
   

   Tester Connection	Switch Condition	Specified Condition
   M6-1 (MRY) - M6-S (E)	SET switch is pressed	Below 1 Ω
   M6-2 (M1) - M6-S (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

Fig 1: Identifying Seat Memory Switch LH
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE SEAT MEMORY SWITCH LH  (See REMOVAL  )

OK: Go to next step 

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

   Standard Resistance 

   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

Fig 2: Identifying Outer Mirror Control ECU LH Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE OUTER MIRROR CONTROL ECU LH  (See OUTER MIRROR CONTROL ECU )