Terminals Of Ecu [12/2019 - 10/2022]

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the instrument panel junction block 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
   4B-3 - Body ground	Ground	Always	Below 1 Ω
   4C-1 - Body ground	Auxiliary battery power supply	Ignition switch off*1 Always*2	11 to 14 V
   4F-1 - Body ground	Auxiliary battery power supply	Ignition switch off*1 Always*2	11 to 14 V
   H42-19 (GND2) - Body ground	Ground	Always	Below 1 Ω

   1. *1: for HV Model
   2. *2: for Gasoline Model
3. Connect the instrument panel junction block 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
   4A-40 - Body ground*	ACC power supply	Ignition switch off	Below 1 V
   		Ignition switch ACC	11 to 14 V
   4B-11 - Body ground	Taillight and rear side marker light drive output	Taillights on	11 to 14 V
   		Taillights off	Below 1 V
   4C-19 - Body ground	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
   4C-23 - Body ground*	IG power supply	Ignition switch off	Below 1 V
   		Ignition switch ON	11 to 14 V
   4C-25 - Body ground	FOG FR relay drive output	Taillights on, fog light switch in front position	Below 1 V
   		Taillights on, fog light switch in off position	11 to 14 V
   4C-31 - Body ground	H-LP LH relay drive output	Ignition switch ON or within 15 seconds after ignition switch turned off Taillights on	Below 1 V
   		15 seconds or more after ignition switch turned off Taillights off	11 to 14 V
   4C-32 - Body ground	Front side marker lights drive output	Taillights on	11 to 14 V
   		Taillights off	Below 1 V
   4D-10 - Body ground	Back-up lights drive output	Ignition switch off, reverse (R) not selected	Below 1 V
   		Ignition switch ON, reverse (R) selected	11 to 14 V
   4D-30 - Body ground	Taillight, rear side marker light and license plate lights drive output	Taillights on	11 to 14 V
   		Taillights off	Below 1 V
   H43-12 (HRY2) - Body ground	H-LP RH relay drive output	Ignition switch ON or within 15 seconds after ignition switch turned off Taillights on	Below 1 V
   		15 seconds or more after ignition switch turned off Taillights off	11 to 14 V
   H43-16 (HEAD) - Body ground	Light control switch head position input	Light control switch in head position	Below 1 V
   		Light control switch not in head position	11 to 14 V
   H43-23 (CLTB) - H43-25 (CLTE)	Automatic light control sensor power supply output	Ignition switch ON	11 to 14 V
   H43-24 (CLTS) - Body ground	Automatic light control sensor signal input	Ignition switch off	Below 1 V
   		Ignition switch ON	Pulse generation (See waveform 1)
   H43-26 (AHBI) - Body ground	Auto high beam switch signal input	Auto high beam switch on	Below 1 V
   		Auto high beam switch off	11 to 14 V
   H44-21 (AHID) - Body ground	Auto high beam switch indicator drive output	Ignition switch ON, auto high beam switch on	Below 1 V
   		Ignition switch ON, auto high beam switch off	11 to 14 V

   1. *: for Gasoline Model
   1. Waveform 1

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Item	Content
      Tester Connection	H43-24 (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.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the A15 headlight ECU sub-assembly LH connector.
2. Measure the voltage and resistance on the wire harness side connector according to the value(s) in the table below.

   Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition
   A15-4 (IG) - Body ground	Ignition power supply	Ignition switch off	Below 1 V
   		Ignition switch ON	11 to 14 V
   A15-12 (GND) - Body ground	Ground	Always	Below 1 Ω
   A15-13 (ECUB) - Body ground	Auxiliary battery power supply	15 seconds or more after ignition switch turned off Taillights off	Below 1 V
   		Ignition switch ON or within 15 seconds after ignition switch turned off Taillights on	11 to 14 V

3. Connect the A15 headlight ECU sub-assembly LH connector.

   HINT: 

   • Since the A headlight ECU sub-assembly LH connector is a waterproof type connector, the voltage and pulses cannot be checked directly. The values listed are for reference only.
   • Since the B and C headlight ECU sub-assembly LH connectors are connected inside the headlight assembly, the voltage and pulses cannot be checked directly. The values listed are for reference only.
4. Measure the voltage and check of pulses according to the value(s) in the table below.

   Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition
   A15-11 (TNS) - Body ground	Front turn signal light signal input	Ignition switch ON, front turn signal light off	Below 1 V
   		Ignition switch ON, front turn signal light blinking	11 to 14 V ←→ Below 1 V
   A15-16 (SBR) - A15-15 (SGR)	Rear height control sensor sub-assembly LH power supply	Ignition switch ON	4.75 to 5.25 V
   A15-17 (SHRL) - A15-15 (SGR)	Rear height control sensor sub-assembly LH signal input	Ignition switch ON, vehicle unloaded, vehicle stopped	Approximately 2.5 V (value decreases as the front of the vehicle is raised)
   A15-19 (LINS) - Body ground	LIN communication line	Ignition switch off	Below 1 V
   		Ignition switch ON	Pulse generation
   A15-20 (LINL) - Body ground	LIN communication line	Ignition switch off	Below 1 V
   		Ignition switch ON	Pulse generation
   A15-23 (CANL) - Body ground	CAN communication line	Ignition switch off	Below 1 V
   		Ignition switch ON	Pulse generation
   A15-24 (CANH) - Body ground	CAN communication line	Ignition switch off	Below 1 V
   		Ignition switch ON	Pulse generation
   B-2 (LOLED2) - B-3 (LOLED1)	Low beam headlights drive output	Low beam headlights off	Below 1 V
   		Low beam headlights on	10 to 20 V
   B-9 (ACTBI) - B-17 (ACTGI)	Headlight swivel and leveling motor power source	Ignition switch off	Below 1 V
   		Ignition switch ON	11 to 14 V
   B-10 (DRL/CLL+) - B-1 (DRL/CLL-)	Parking lights/daytime running lights power source	Parking lights and daytime running lights off	Below 1 V
   		Parking lights and daytime running lights on	11 to 14 V
   B-16 (PWM1) - B-1 (DRL/CLL-)	Parking lights/daytime running lights control signal output	Parking lights and daytime running lights off	Below 1 V
   		Parking lights and daytime running lights on	Pulse generation
   B-19 (HI_SOL+) - B-11 (HI_SOL-)	High beam headlights drive output	High beam headlights off	Below 1 V
   		High beam headlights on	11 to 14 V
   B-20 (TURN+) - B-1 (DRL/CLL-)	Front turn signal light signal output	Ignition switch ON, front turn signal light off	Below 1 V
   		Ignition switch ON, front turn signal light blinking	11 to 14 V ←→ Below 1 V
   C-4 (LINSI) - Body ground	LIN communication line	Ignition switch off	Below 1 V
   		Ignition switch ON	Pulse generation
   C-7 (CLL+) - B-1 (DRL/CLL-)	Parking lights drive output	Parking lights off	Below 1 V
   		Parking lights on	11 to 14 V
   C-13 (LINLI) - Body ground	LIN communication line	Ignition switch off	Below 1 V
   		Ignition switch ON	Pulse generation

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the A16 headlight ECU sub-assembly RH connector.
2. Measure the voltage and resistance on the wire harness side connector according to the value(s) in the table below.

   Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition
   A16-4 (IG) - Body ground	Ignition power supply	Ignition switch off	Below 1 V
   		Ignition switch ON	11 to 14 V
   A16-12 (GND) - Body ground	Ground	Always	Below 1 Ω
   A16-13 (ECUB) - Body ground	Auxiliary battery power supply	15 seconds or more after ignition switch turned off Taillights off	Below 1 V
   		Ignition switch ON or within 15 seconds after ignition switch turned off Taillights on	11 to 14 V

3. Connect the A16 headlight ECU sub-assembly RH connector.

   HINT: 

   • Since the A16 headlight ECU sub-assembly RH connector is a waterproof type connector, the voltage and pulses cannot be checked directly. The values listed are for reference only.
   • Since the B and C headlight ECU sub-assembly RH connectors are connected inside the headlight assembly, the voltage and pulses cannot be checked directly. The values listed are for reference only.
4. Measure the voltage and check of pulses according to the value(s) in the table below.

   Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition
   A16-11 (TNS) - Body ground	Front turn signal light signal input	Ignition switch ON, front turn signal light off	Below 1 V
   		Ignition switch ON, front turn signal light blinking	11 to 14 V ←→ Below 1 V
   A16-19 (LINS) - Body ground	LIN communication line	Ignition switch off	Below 1 V
   		Ignition switch ON	Pulse generation
   A16-20 (LINL) - Body ground	LIN communication line	Ignition switch off	Below 1 V
   		Ignition switch ON	Pulse generation
   A16-23 (CANL) - Body ground	CAN communication line	Ignition switch off	Below 1 V
   		Ignition switch ON	Pulse generation
   A16-24 (CANH) - Body ground	CAN communication line	Ignition switch off	Below 1 V
   		Ignition switch ON	Pulse generation
   B-2 (LOLED2) - B-3 (LOLED1)	Low beam headlights drive output	Low beam headlights off	Below 1 V
   		Low beam headlights on	10 to 20 V
   B-9 (ACTBI) - B-17 (ACTGI)	Headlight swivel and leveling motor power source	Ignition switch off	Below 1 V
   		Ignition switch ON	11 to 14 V
   B-10 (DRL/CLL+) - B-1 (DRL/CLL-)	Parking lights/daytime running lights power source	Parking lights and daytime running lights off	Below 1 V
   		Parking lights and daytime running lights on	11 to 14 V
   B-16 (PWM1) - B-1 (DRL/CLL-)	Parking lights/daytime running lights control signal output	Parking lights and daytime running lights off	Below 1 V
   		Parking lights and daytime running lights on	Pulse generation
   B-19 (HI_SOL+) - B-11 (HI_SOL-)	High beam headlights drive output	High beam headlights off	Below 1 V
   		High beam headlights on	11 to 14 V
   B-20 (TURN+) - B-1 (DRL/CLL-)	Front turn signal light signal output	Ignition switch ON, front turn signal light off	Below 1 V
   		Ignition switch ON, front turn signal light blinking	11 to 14 V ←→ Below 1 V
   C-4 (LINSI) - Body ground	LIN communication line	Ignition switch off	Below 1 V
   		Ignition switch ON	Pulse generation
   C-7 (CLL+) - B-1 (DRL/CLL-)	Parking lights drive output	Parking lights off	Below 1 V
   		Parking lights on	11 to 14 V
   C-13 (LINLI) - Body ground	LIN communication line	Ignition switch off	Below 1 V
   		Ignition switch ON	Pulse generation

Refer to TERMINALS OF ECU [12/2019 - 11/2023]

Refer to TERMINALS OF ECU [12/2019 - ]

for HV Model: Refer to TERMINALS OF ECU [12/2019 - 10/2021] , or refer to TERMINALS OF ECU [10/2021 - 10/2022]

for Gasoline Model: Refer to TERMINALS OF ECU [12/2019 - 10/2022]