Inspection Procedure

1. Turn the ignition switch to ON.
2. Measure the voltage according to the value(s) in the table below.

   Standard voltage 

   VOLTAGE SPECIFICATION
   
   

   Tester Connection	Switch Condition	Specified Condition
   F16-12 (TS) - F16-4 (CG)	Ignition switch ON	11 to 14 V

NG: Go to step 2 

Fig 1: Identifying F16 Connector Terminal

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

1. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   RESISTANCE REFERENCE
   
   

   Tester Connection	Condition	Specified Condition
   F16-4 (CG) - Body ground	Always	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

Fig 2: Identifying F16 Connector Terminal

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to Next Step 

1. Disconnect the connector from the power steering ECU.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   RESISTANCE REFERENCE
   
   

   Tester Connection	Condition	Specified Condition
   F30-11 (TS) - F16-12 (TS)	Always	Below 1 Ω
   F30-11 (TS) - Body ground	Always	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

Fig 3: Identifying F16 And F30 Connector Terminal

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK : REPLACE POWER STEERING ECU  (See REMOVAL  )