Terminals Of Ecu [11/2020 - 12/2022]

CHECK REAR WINDOW SHADE ASSEMBLY

Disconnect the G16 rear window shade assembly connector.

Fig 1: Interior Panels / Trim Of Rear Sunshade System Terminals Of ECU
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition
G16-8 (B) - Body ground	Auxiliary battery power supply	Within 60 seconds after ignition switch turned off, or ignition switch turned to ON again after 60 seconds have elapsed from time ignition switch turned off	11 to 14 V
G16-7 (IG) - Body ground	IG power supply	Ignition switch off	Below 1 V
G16-7 (IG) - Body ground	IG power supply	Ignition switch ON	11 to 14 V
G16-1 (E) - Body ground	Ground	Always	Below 1 Ω

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

Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition
G16-4 (RSW) - Body ground	Rear sunshade operation signal	Within 60 seconds after ignition switch turned off or ignition switch turned to ON again after 60 seconds have elapsed from time ignition switch turned off Cooler control switch assembly (rear sunshade switch) pushed	Below 1 V
G16-4 (RSW) - Body ground	Rear sunshade operation signal	Within 60 seconds after ignition switch turned off, or ignition switch turned to ON again after 60 seconds have elapsed from time ignition switch turned off cooler control switch assembly (rear sunshade switch) not pushed	11 to 14 V
G16-3 (REV) - Body ground	Reverse position signal	Start the hybrid control system, shift lever in not R	11 to 14 V
G16-3 (REV) - Body ground	Reverse position signal	Start the hybrid control system, shift lever in R	Below 1 V
G16-5 (SW) - Body ground	Rear sunshade operation signal	Within 60 seconds after ignition switch turned off, or ignition switch turned to ON again after 60 seconds have elapsed from time ignition switch turned off Multi-display assembly (rear sunshade switch) pushed	Below 1 V
G16-5 (SW) - Body ground	Rear sunshade operation signal	Within 60 seconds after ignition switch turned off, or ignition switch turned to ON again after 60 seconds have elapsed from time ignition switch turned off Multi-display assembly (rear sunshade switch) not pushed	11 to 14 V

CHECK DRIVER SIDE JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Main Body ECU (Multiplex Network Body ECU)

Remove the main body ECU (multiplex network body ECU).
Refer to REMOVAL [11/2020 - 11/2021] , or refer to REMOVAL [11/2021 - 12/2022]
Connect the driver side junction block assembly connectors.

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

Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition
A-11 (GND1) - Body ground	Ground	Always	Below 1 Ω
A-30 (ACC) - Body ground	ACC power supply	Ignition switch ACC	11 to 14 V
A-30 (ACC) - Body ground	ACC power supply	Ignition switch off	Below 1 V
A-31 (BECU) - Body ground	Auxiliary battery power supply	Ignition switch off	11 to 14 V
A-32 (IG) - Body ground	IG power supply	Ignition switch ON	11 to 14 V
A-32 (IG) - Body ground	IG power supply	Ignition switch off	Below 1 V

Install the main body ECU (multiplex network body ECU) to the driver side junction block assembly.
Refer to INSTALLATION [11/2020 - 12/2023]

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

Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition
D12-6 (REV) - Body ground	Reverse position signal	Start the Hybrid control system, shift lever in not R	11 to 14 V
D12-6 (REV) - Body ground	Reverse position signal	Start the Hybrid control system, shift lever in R	Below 1 V