Inspection Procedure

1. Select the ACTIVE TEST, use the intelligent tester or Techstream to generate a control command, and then check the power seat motor function.
   1. Intelligent tester

      D-SEAT 

      INTELLIGENT TESTER - D-SEAT REFERENCE
      
      

      Tester Display	Test Part	Control Range
      F VERTICAL	Seat front vertical operation	UP/DOWN

   2. Techstream

      Driver Seat 

      TECHSTREAM - DRIVER SEAT REFERENCE
      
      

      Tester Display	Test Part	Control Range
      Front Vertical Operation	Seat front vertical operation	UP/DOWN

      OK: Motor operates normally 

NG: Go to step   6 

OK: GO TO NEXT STEP 

Fig 1: Identifying e46 And e39 Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Disconnect the e46 switch connector.
2. Disconnect the e39 sensor connector.
3. Measure the resistance according to the values in the table below.

   Standard resistance 

   FRONT POWER SEAT SWITCH LH - FRONT POWER SEAT POSITION SENSOR LH AND BODY GROUND
   
   

   Tester Connection	Condition	Specified Condition
   e46-8 (PVCC) - e39-3 (VCC)	Always	Below 1 Ω
   e46-19(SSFV) - e39-1 (O/P)	Always	Below 1 Ω
   e46-18(SGND) - e39-2 (GND)	Always	Below 1 Ω
   e46-8 (PVCC) - Body ground	Always	10 kΩ or higher
   e46-19 (SSFV) - Body ground	Always	10 kΩ or higher
   e46-18(SGND) - Body ground	Always	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: GO TO NEXT STEP 

Fig 2: Identifying e39 Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Disconnect the e39 sensor connector.
2. Measure the voltage according to the values in the table below.

   Standard voltage 

   FRONT SEAT ADJUSTER ASSEMBLY LH (POSITION CONTROL SENSOR)
   
   

   Tester Connection	Switch Condition	Specified Condition
   e39-3 (VCC) - e39-2 (GND)	Front vertical switch signal ON	7.2 to 8.8 V

NG: REPLACE FRONT POWER SEAT SWITCH LH (See  REMOVAL  ) 

OK: GO TO NEXT STEP 

Fig 3: Identifying e39 Sensor Connector Terminal O/P
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Reconnect the e39 sensor connector.
2. Measure the voltage according to the value in the table below.

   Standard voltage 

   FRONT SEAT ADJUSTER ASSEMBLY LH (POSITION CONTROL SENSOR)
   
   

   Tester Connection	Switch Condition	Specified Condition
   e39-1 (O/P) - Body ground	Front vertical switch signal ON	0 to 8V

NG: REPLACE FRONT SEAT ADJUSTER ASSEMBLY LH (See  REMOVAL  ) 

OK: GO TO NEXT STEP 

1. Clear the DTC (see DTC CHECK / CLEAR  ).
2. Recheck the DTC.

   OK: DTC B2652 is not output. 

NG: REPLACE FRONT POWER SEAT SWITCH LH (See  REMOVAL  ) 

OK: END (SYSTEM RETURNS TO NORMAL) 

Fig 4: Identifying Power Seat Motor Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Check operation of the power seat motor (front vertical motor).
   1. Check if the seat adjuster moves smoothly when the battery is connected to the slide motor connector terminals.

      OK 

      FRONT SEAT ADJUSTER ASSEMBLY LH (POWER SEAT MOTOR)
      
      

      Measurement Condition	Operational Direction
      Battery positive (+) → 1 Battery negative (-) → 2	Upward
      Battery positive (+) → 2 Battery negative (-) → 1	Downward

NG: REPLACE FRONT SEAT ADJUSTER ASSEMBLY LH (See  REMOVAL  ) 

OK: GO TO NEXT STEP 

Fig 5: Identifying e45 And e46 Switch Connectors Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Disconnect the e45 and e46 switch connectors.
2. Disconnect the e38 motor connector.
3. Measure the resistance according to the values in the table below.

   Standard resistance 

   FRONT POWER SEAT SWITCH LH - POWER SEAT MOTOR
   
   

   Tester Connection	Condition	Specified Condition
   e46-1 (FRV+) - e38-1	Always	Below 1 Ω
   e45-12(FRV-) - e38-2	Always	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE FRONT POWER SEAT SWITCH LH (See  REMOVAL  )