IG Power Source Circuit [09/2015 - ]: 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

Result:  NG

NG 

REPLACE FUSE 

Result:  OK

OK 

See step  2

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Result:  OK

OK 

REPLACE MULTIPLEX TILT AND TELESCOPIC ECU 

(Refer to REMOVAL [09/2015 - ] )

Result:  NG

NG 

See step  3

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard resistance

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

Result:  NG

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result:  OK

OK 

See step  4

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

Result:  OK

OK 

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

Result:  NG

NG 

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