Inspection Procedure

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

   Standard Resistance 

   RESISTANCE SPECIFICATION
   
   

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

   Standard Voltage 

   VOLTAGE SPECIFICATION
   
   

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

   Fig 1: Identifying L34 Multiplex Tilt And Telescopic ECU Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: REPLACE MULTIPLEX TILT AND TELESCOPIC ECU  (See REMOVAL  )

NG: Go to next step 

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

   Standard Resistance 

   RESISTANCE SPECIFICATION
   
   

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

   Fig 2: Identifying L34 Multiplex Tilt And Telescopic ECU Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

Fig 3: Identifying Multiplex Tilt And Telescopic ECU - Main Body ECU Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Voltage 

   VOLTAGE SPECIFICATION
   
   

   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)