IG Power Source Circuit: Procedure

1. Remove the ECU-IG RH fuse from the main body ECU RH (cowl side J/B RH).
2. Measure the resistance of the ECU-IG RH fuse.

   Standard resistance

   Below 1 Ω

NG → REPLACE FUSE 

OK: Go to next step 

1. Disconnect the J28 connector from the multiplex tilt & 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 (Terminal No.)	Condition	Specified value
   IG (J28-8) - GND (J28-11)	Engine switch on (IG)	10 to 14 V

OK → PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE 

NG: Go to next step 

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard resistance

   Tester connection (Terminal No.)	Condition	Specified value
   GND (J28-11) - Body ground	Always	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard voltage

   Tester condition	Condition	Specified value
   RA-1 - Body ground	Engine switch on (IG)	10 to 14 V

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

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (MAIN BODY ECU RH (COWL SIDE J/B RH) - BATTERY)