Inspection Procedure

1. Remove the D P/SEAT and D MPX-B 1 fuses from the main body ECU.
2. Remove the P P/SEAT1 P MPX-B fuses from the passenger side junction block.
3. Measure the resistance according to the values in the table below.

   Standard Resistance 

   RESISTANCE SPECIFIED CONDITION
   
   

   Tester Connection	Condition	Specified Condition
   D P/SEAT fuse	Always	Below 1 Ω
   P P/SEAT1 fuse	Always	Below 1 Ω

NG: REPLACE FUSE 

OK: Go to Next Step 

1. Disconnect the e45*1, e46*1, e20*2 and e18*2 switch connectors.
2. Measure the voltage according to the values in the table below.

   Standard Voltage 

   for Driver Side 

   VOLTAGE SPECIFIED CONDITIONS
   
   

   Tester Connection	Condition	Specified Condition
   e45-7 (+B) - Body ground	Always	11 to 14 V
   e46-4 (SYSB) - Body ground	Always	11 to 14 V

   for Passenger Side 

   VOLTAGE SPECIFIED CONDITIONS
   
   

   Tester Connection	Condition	Specified Condition
   e18-7 (+B) - Body ground	Always	11 to 14 V
   e20-4 (SYSB) - Body ground	Always	11 to 14 V

   Fig 1: Identifying e451, e46, e20 And e18 Power Seat Switch Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Measure the resistance according to the values in the table below.

   Standard Resistance 

   for Driver Side 

   RESISTANCE SPECIFIED CONDITION
   
   

   Tester Connection	Condition	Specified Condition
   e45-6 (GND) - Body ground	Always	Below 1 Ω

   for Passenger Side 

   RESISTANCE SPECIFIED CONDITION
   
   

   Tester Connection	Condition	Specified Condition
   e18-6 (GND) - Body ground	Always	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE FRONT POWER SEAT SWITCH  (See REMOVAL  )