Inspection Procedure

PREPARATION: 

Disconnect the connector of the sensor and the connector of the motor leading to the sensor.

CHECK: 

1. Connect positive (+) lead to terminal 3 of sensor and negative (+) lead to terminal 2.
2. Measure voltage between terminal 1 of sensor and body ground when battery positive voltage is applied between terminals 1 and 2 of motor connector.
   Fig 1: Checking Position Sensor

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   HINT:

   When the battery positive voltage is applied to the motor connector terminals, (+) and (-) are interchangeable.

   OK: 

   VOLTAGE REFERENCE
   
   

   Condition	Voltage
   Motor stopped (Check several times with the motor in a different position each time.)	0 V or battery positive voltage according to stop position.
   with motor turning	half of battery positive voltage

   1. NG: Replace position sensor. 
   2. OK: Go to next step. 

1. NG: Repair or replace harness or connectors. 
2. OK: Check and replace Seat Position Control ECU.