Inspection Procedure: Procedure

1. Turn the ignition switch off.
2. Disconnect the power steering ECU connector.
   Fig 1: Power Steering ECU Connector Terminal Identification

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Power Steering ECU)

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

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   E32-1 (CANH) - E32-7 (CANL)	Ignition switch off	54 to 69 Ω

NG → REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR (POWER STEERING ECU BRANCH WIRE) 

OK: Go to next step 

1. Disconnect the power steering ECU connectors.
   Fig 2: Power Steering ECU - Battery And Body Ground Connector Terminal Identification

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Power Steering ECU)

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A75-2 (PGND) - Body ground	Always	Below 1 Ω

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   A75-1 (PIG) - Body ground	Always	10 to 14 V
   E32-6 (IG) - Body ground	Ignition switch ON	10 to 14 V

   Result

   Result	Proceed to
   OK (for 2AZ-FE)	A
   OK (for 2ZR-FE)	B
   NG	C

C → REPAIR OR REPLACE HARNESS OR CONNECTOR 

B → See step   4 

A → See step   3