Tilt and Telescopic Manual Switch Circuit [12/2017 - ]: Procedure

1. Turn the engine switch off.
2. Connect the Techstream to the DLC3.
3. Turn the engine switch on (IG).
4. Turn the Techstream on.
5. Check the tilt and telescopic switch.
6. Enter the following menus: Body Electrical / Tilt & Telescopic / Data List.

   Body Electrical > Tilt&Telescopic > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Tilt Manual Switch Up	Input state of tilt up switch	ON or OFF	-	-
   Tilt Manual Switch Down	Input state of tilt down switch	ON or OFF	-	-
   Telescopic Manual Switch Short	Input state of telescopic contract switch	ON or OFF	-	-
   Telescopic Manual Switch Long	Input state of telescopic extend switch	ON or OFF	-	-

   Body Electrical > Tilt&Telescopic > Data List 

   Tester Display
   Tilt Manual Switch Up
   Tilt Manual Switch Down
   Telescopic Manual Switch Short
   Telescopic Manual Switch Long

   OK

   "ON" is displayed on the Techstream screen when each switch is turned on.

   "OFF" is displayed on the Techstream screen when each switch is turned off.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE MULTIPLEX TILT AND TELESCOPIC ECU. Refer to  REMOVAL [12/2017 - 09/2018]  , or refer to  REMOVAL [09/2018 - 10/2020]  , or refer to  REMOVAL [10/2020 - 10/2022]  , or refer to  REMOVAL [10/2022 - 10/2023]  , or refer to  REMOVAL [10/2023 - ] 

Result: 

NG 

See step  2

1. Disconnect the G21 multiplex tilt and telescopic ECU connector.
2. Disconnect the G25 tilt and telescopic switch connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   G21-5 (VC) - G25-1 (VC)	Always	Below 1 Ω
   G21-18 (MSW) - G25-3 (MSW)	Always	Below 1 Ω
   G21-5 (VC) or G25-1 (VC) - Body ground	Always	10 kΩ or higher
   G21-18 (MSW) or G25-3 (MSW) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  3

1. Reconnect the G21 multiplex tilt and telescopic ECU connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component with harness connected (Multiplex Tilt and Telescopic ECU)

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   G21-5 (VC) - G21-18 (MSW)	Engine switch on (IG)	4.9 to 5.1 V

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE MULTIPLEX TILT AND TELESCOPIC ECU. Refer to  REMOVAL [12/2017 - 09/2018]  , or refer to  REMOVAL [09/2018 - 10/2020]  , or refer to  REMOVAL [10/2020 - 10/2022]  , or refer to  REMOVAL [10/2022 - 10/2023]  , or refer to  REMOVAL [10/2023 - ] 

Result: 

OK 

See step  4

1. Inspect the tilt and telescopic switch.

   Refer to INSPECTION [12/2017 - ]

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE MULTIPLEX TILT & TELESCOPIC ECU. Refer to  REMOVAL [12/2017 - 09/2018]  , or refer to  REMOVAL [09/2018 - 10/2020]  , or refer to  REMOVAL [10/2020 - 10/2022]  , or refer to  REMOVAL [10/2022 - 10/2023]  , or refer to  REMOVAL [10/2023 - ] 

Result: 

NG 

REPLACE TILT AND TELESCOPIC SWITCH. Refer to  REMOVAL [12/2017 - 09/2018]  , or refer to  REMOVAL [09/2018 - 10/2020]  , or refer to  REMOVAL [10/2020 - 10/2022]  , or refer to  REMOVAL [10/2022 - 10/2023]  , or refer to  REMOVAL [10/2023 - ]