Terminals Of Ecu [11/2023 - ]

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the power distribution box assembly and main body ECU (multiplex network body ECU) connectors.
2. Measure the voltage and resistance according to the value(s) in the table below.

   Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition
   8B-36 - Body ground	Ground	Always	Below 1 Ω
   8B-44 - Body ground	Ground	Always	Below 1 Ω
   8C-41 - Body ground	Ground	Always	Below 1 Ω
   8C-25 - Body ground	Ground	Always	Below 1 Ω
   8E-13 - Body ground	Auxiliary battery power supply	Ignition switch off	11 to 14 V
   8E-23 - Body ground	Auxiliary battery power supply	Ignition switch off	11 to 14 V
   8K-1 - Body ground	Auxiliary battery power supply	Ignition switch off	11 to 14 V
   8H-1 - Body ground	Auxiliary battery power supply	Ignition switch off	11 to 14 V
   8J-1 - Body ground	Auxiliary battery power supply	Ignition switch off	11 to 14 V

3. Connect the power distribution box assembly and main body ECU (multiplex network body ECU) connectors.
4. Measure the voltage and check for pulses according to the value(s) in the table below.

   Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition
   8B-29 - Body ground*1	R shift position switch signal	Ignition switch off, reverse (R) not selected	Below 1 V
   		Ignition switch ON, reverse (R) selected	11 to 14 V
   8E-3 - Body ground	Daytime running light system drive output	Daytime running light system operating	Below 1 V
   		Daytime running light system not operating	11 to 14 V
   8E-6 - Body ground	H-LP LH relay drive output	15 seconds or more after ignition switch turned off Taillights off	9.5 to 14 V
   		Ignition switch ON or within 15 seconds after ignition switch turned off Taillights on	Below 1 V
   8E-10 - Body ground	H-LP RH relay drive output	15 seconds or more after ignition switch turned off Taillights off	9.5 to 14 V
   		Ignition switch ON or within 15 seconds after ignition switch turned off Taillights on	Below 1 V
   8E-18 - Body ground	Taillights drive output	Ignition switch off	Below 1 V
   		Ignition switch ON	11 to 14 V
   8G-30 - Body ground	Taillights drive output	Taillights off	Below 1 V
   		Taillights on	11 to 14 V
   8G-28 - Body ground*2	Front fog lights drive output	Taillights on, fog light switch in off position	Below 1 V
   		Taillights on, fog light switch in front position	11 to 14 V
   8G-38 - Body ground*1	Back-up lights drive output	Ignition switch ON, reverse (R) not selected	Below 1 V
   		Ignition switch ON, reverse (R) selected	11 to 14 V
   H135-8 (CLTB) - H135-21 (CLTE)	Automatic light control sensor power supply output	Ignition switch ON	11 to 14 V
   H135-14 (AHBI) - Body ground	Auto high beam switch signal input	Auto high beam switch off	11 to 14 V
   		Auto high beam switch on	Below 1 V
   H135-15 (AHID) - Body ground	Auto high beam switch indicator drive output	Ignition switch ON, auto high beam switch off	11 to 14 V
   		Ignition switch ON, auto high beam switch on	Below 1 V
   H135-20 (CLTS) - Body ground	Automatic light control sensor signal input	Ignition switch ON	Pulse generation (See waveform 1)
   H135-22 (DIM) - Body ground	High beam headlight drive output	Light control switch in head position and dimmer switch in high or high flash position	Below 1 V
   		Dimmer switch not in high or high flash position	11 to 14 V
   H135-26 (HEAD) - Body ground	Light control switch head position input	Light control switch not in head position	11 to 14 V
   		Light control switch in head position	Below 1 V

   1. *1: for HV Model
   2. *2: w/ Front Fog Light
   1. Waveform 1

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Item	Content
      Tester Connection	H135-20 (CLTS) - Body ground
      Tool setting	2 V/DIV., 10 ms./DIV.
      Condition	Ignition switch ON

      HINT: 

      The communication waveform changes according to the surrounding brightness.

for 12.3 Inch Display: Refer to TERMINALS OF ECU [11/2023 - ]

except 12.3 Inch Display: Refer to TERMINALS OF ECU [11/2023 - ]

Refer to TERMINALS OF ECU [12/2019 - ]

for HV Model: Refer to TERMINALS OF ECU [11/2023 - 11/2024] , or refer to TERMINALS OF ECU [11/2024 - ]

for Gasoline Model: Refer to TERMINALS OF ECU [11/2023 - ]