IG Power Source Circuit: Procedure

1. Remove the D-IG1-1 fuse from the main body ECU.
2. Measure the resistance of the fuse.

   Standard resistance

   Tester Connection	Condition	Specified Condition
   D-IG1-1 fuse	Always	Below 1 Ω

NG → REPLACE FUSE 

OK: Go to next step 

1. Disconnect the L34 connector from the multiplex tilt and telescopic ECU.

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

   Standard voltage

   Tester Connection	Switch Condition	Specified Condition
   L34-8 (IG) - L34-11 (GND)	Engine switch on (IG)	11 to 14 V

OK → See step   5 

NG: Go to next step 

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

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   Standard resistance

   Tester Connection	Condition	Specified Condition
   L34-11 (GND) - Body ground	Always	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard voltage

   Tester Connection	Switch Condition	Specified Condition
   DA-21 - Body ground	Engine switch on (IG)	11 to 14 V

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (MAIN BODY ECU - BATTERY) 

OK → REPAIR OR REPLACE HARNESS OR CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - MAIN BODY ECU)