IG Power Source Circuit [08/2017 - 08/2019]: Procedure

1. Disconnect the H146 multiplex tilt and telescopic ECU connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Multiplex Tilt and Telescopic ECU)

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   H146-10 (IG) - Body ground	Ignition switch ON	11 to 14 V

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  2

1. Disconnect the H146 multiplex tilt and telescopic ECU connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Multiplex Tilt and Telescopic ECU)

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   H146-1 (GND) - Body ground	Always	Below 1 Ω
   H146-8 (GND2) - Body ground	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. 

Refer to

PROBLEM SYMPTOMS TABLE [08/2017 - 08/2018] , or refer to

PROBLEM SYMPTOMS TABLE [08/2018 - 08/2019]

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR