Inspection Procedure

1. Disconnect the connector (S12) from the steering sensor.
2. Measure the resistance according to the value(s) in WIRE HARNESS (IG1, ESS)  .

   Standard resistance 

   WIRE HARNESS (IG1, ESS) (RESISTANCE)
   
   

   Tester Connection	Condition	Specified value
   S12-2 (ESS) - Body ground	Always	Below 1 Ω

3. Measure the voltage according to the value(s) in the table below.

   Standard voltage 

   WIRE HARNESS (IG1, ESS) (VOLTAGE)
   
   

   Tester Connection	Condition	Specified value
   S12-1 (IG1) - Body ground	IG switch ON	10 to 14 V

   Fig 1: Checking Wire Harness (IG1, ESS)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   NOTE: Perform the measurement from the back of the connector with the connector connected.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE STEERING SENSOR