Inspection Procedure

1. Remove the ECU-IG1 No. 1 fuse from the main body ECU.
2. Measure the resistance of the fuse.

   Standard Resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   ECU-IG1 No. 1 fuse	Always	Below 1 Ω

NG: REPLACE FUSE 

OK: Go to next step. 

1. Disconnect the E27 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
   E27-8 (IG) - E27-11 (GND)	Engine switch on (IG)	11 to 14 V

NG: Go to step 3 

Fig 1: Identifying Multiplex Tilt And Telescopic ECU E27 Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

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

   Standard Resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   E27-11 (GND) - Body ground	Always	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

Fig 2: Identifying Multiplex Tilt And Telescopic ECU E27 Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step. 

Fig 3: Identifying Multiplex Tilt And Telescopic ECU 2D 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
   2D-56 - 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)