Tilt and Telescopic ECU Communication Stop Mode [10/2018 - 07/2022]: Procedure

1. Disconnect the cable from the negative (-) auxiliary battery terminal.
2. Disconnect the multiplex tilt and telescopic ECU connector.
3. Measure the resistance according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Multiplex Tilt and Telescopic ECU)

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   F54-3 (CANP) - F54-11 (CANN)	Cable disconnected from negative (-) auxiliary battery terminal	54 to 69 Ω

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU) 

Result: 

OK 

See step  2

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Multiplex Tilt and Telescopic ECU)

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   F54-1 (GND) - Body ground	Cable disconnected from negative (-) auxiliary battery terminal	Below 1 Ω
   F54-8 (GND2) - Body ground	Cable disconnected from negative (-) auxiliary battery terminal	Below 1 Ω

2. Reconnect the cable to the negative (-) auxiliary battery terminal.
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   F54-9 (ECUB) - Body ground	Engine switch off	11 to 14 V
   F54-10 (IG) - Body ground	Engine switch on (IG)	11 to 14 V

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE MULTIPLEX TILT AND TELESCOPIC ECU. Refer to  REMOVAL [10/2018 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)