Terminals Of Ecu [03/2017 - 05/2023]

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Remove the main body ECU (multiplex network body ECU).

   Refer to REMOVAL [03/2017 - 05/2023]

2. Connect the driver side junction block assembly connectors.
3. Measure the resistance and voltage according to the value(s) in the table below.

   Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
   A-11 (GND1) - Body ground	None - Body ground	Ground	Always	Below 1 Ω
   A-30 (ACC) - Body ground	None - Body ground	ACC power supply	Engine switch on (ACC)	11 to 14 V
   	None - Body ground		Engine switch off	Below 1 V
   A-31 (BECU) - Body ground	None - Body ground	Battery power supply	Always	11 to 14 V
   A-32 (IG) - Body ground	None - Body ground	IG power supply	Engine switch on (IG)	11 to 14 V
   	None - Body ground		Engine switch off	Below 1 V

4. Install the main body ECU (multiplex network body ECU) to the driver side junction block assembly.

   Refer to INSTALLATION [03/2017 - 05/2023]

5. Measure the voltage and check for pulses according to the value(s) in the table below.

   Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
   P9-4 (TSW) - Body ground	W - Body ground	No. 3 combination switch assembly (luggage door opening switch) signal	No. 3 combination switch assembly (luggage door opening switch) on	Below 1 V
   			Engine switch off, all doors closed and No. 3 combination switch assembly (luggage door opening switch) off	Pulse generation
   P7-27 (TMSW) - Body ground	B - Body ground	Luggage door opening cancel switch assembly signal	Luggage door opening cancel switch on	Below 1 V
   			Engine switch off, all doors closed and luggage door opening cancel switch off	11 to 14 V
   3D-27 (LGCY) - Body ground	G - Body ground	Luggage compartment door courtesy switch input signal	Luggage compartment door open	Below 1 V
   			Luggage compartment door closed	11 to 14 V
   3C-32 (TR+) - Body ground	Y - Body ground	Luggage opening relay (TRUNK OPN) output signal	Luggage compartment door lock assembly is operating	Below 1 V
   			Luggage compartment door lock assembly is not operating	11 to 14 V

Refer to TERMINALS OF ECU [03/2017 - 05/2023]