Terminals Of Ecu [10/2018 - 07/2022]

Fig 1: Main BODY ECU (Multiplex Network Body ECU) And Instrument Panel Junction Block Assembly Connector End View

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)	Wiring Color	Terminal Description	Condition	Specified Condition
   4B-3 - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
   4C-1 - Body ground	W - Body ground	Auxiliary battery power supply	Ignition switch off	11 to 14 V
   4F-1 - Body ground	B-R - Body ground	Auxiliary battery power supply	Ignition switch off	11 to 14 V

3. Connect the instrument panel junction block assembly and main body ECU (multiplex network body ECU) connectors.
4. Measure the voltage and resistance, and check for pulses according to the value(s) in the table below.

   Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
   4A-30 - Body ground*1	R - Body ground	ACC relay drive input	Ignition switch off	Below 1 V
   			Ignition switch ACC	11 to 14 V
   4B-23 - Body ground*1	GR - Body ground	BKUP LP relay drive output	Ignition switch off	Below 1 V
   			Ignition switch ON	11 to 14 V
   4C-19 - Body ground	SB - Body ground*1 LA-SB - Body ground*2	BKUP LP relay drive input	Ignition switch off, reverse (R) not selected	Below 1 V
   			Ignition switch ON, reverse (R) selected	11 to 14 V
   4C-25 - Body ground*3	LA-BE - Body ground	Front fog light drive output	Taillights on, fog light switch in front position	11 to 14 V
   			Taillights on, fog light switch in off position	Below 1 V
   4C-31 - Body ground	LA-G - 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	B - Body ground	TAIL relay drive output	Taillights on	11 to 14 V
   			Taillights off	Below 1 V
   4D-10 - Body ground	R - 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	G - Body ground	Taillights, rear side marker lights and license plate lights drive output	Taillights on	11 to 14 V
   			Taillights off	Below 1 V
   F41-19 (GND2) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
   F40-12 (HRY2) - Body ground	BE - 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
   F40-16 (HEAD) - Body ground	P - 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
   F40-23 (CLTB) - F40-25 (CLTE)	LG - G	Automatic light control sensor power supply output	Ignition switch off	Below 1 V
   			Ignition switch ON	11 to 14 V
   F40-24 (CLTS) - Body ground	R - Body ground	Automatic light control sensor signal input	Ignition switch off	Below 1 V
   			Ignition switch ON	Pulse generation (See waveform 1)
   F39-2 (OHIL) - Body ground*4	LG - Body ground	Outside handle foot lights drive output	Outside handle foot light illuminates	11 to 14 V
   			Outside handle foot light off	Below 3 V

   1. *1: for Gasoline Model
   2. *2: for HV Model
   3. *3: w/ Front Fog Light
   4. *4: w/ Foot Light
   1. Waveform 1
      Fig 2: Waveform 1

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Item	Content
      Tester Connection	F40-24 (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.

Fig 3: No. 1 Headlight ECU Sub-Assembly LH (For Triple Beam Headlight) Connector End View

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the A15 No. 1 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)	Wiring Color	Terminal Description	Condition	Specified Condition
   A15-4 (IG) - Body ground	V - Body ground	Ignition power supply	Ignition switch off	Below 1 V
   			Ignition switch ON	11 to 14 V
   A15-12 (GND) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
   A15-13 (ECUB) - Body ground	V - 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	9.5 to 14 V

3. Connect the A15 No. 1 headlight ECU sub-assembly LH connector.

   HINT: 

   • Since the A15 No. 1 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 No. 1 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)	Wiring Color	Terminal Description	Condition	Specified Condition
   A15-9 (CRSL) - Body ground	SB - Body ground	Cornering lights drive output	Cornering lights off	Below 1 V
   			Cornering lights on	8.05 to 11.8 V
   A15-11 (TNS) - Body ground	V - 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)	G - R	Rear height control sensor sub-assembly LH power supply	Ignition switch ON	4.75 to 5.25 V
   A15-17 (SHRL) - A15-15 (SGR)	W - R	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*	LG - Body ground	LIN communication line	Ignition switch off	Below 1 V
   			Ignition switch ON	Pulse generation
   A15-20 (LINL) - Body ground	R - Body ground	LIN communication line	Ignition switch off	Below 1 V
   			Ignition switch ON	Pulse generation
   A15-23 (CANL) - Body ground	W - Body ground	CAN communication line	Ignition switch off	Below 1 V
   			Ignition switch ON	Pulse generation
   A15-24 (CANH) - Body ground	G - 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	24.2 to 35.4 V
   B-4 (FANB) - B-14 (FANG)	-	Headlight fan power source	Low beam headlights off	Below 1 V
   			Low beam headlights on	4.75 to 5.25 V
   B-9 (ACTBI) - B-17 (ACTGI)	-	Headlight swivel motor and headlight 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-15 (FANP) - B-14 (FANG)	-	Headlight fan control signal input	Low beam headlights off	Below 1 V
   			Low beam headlights on	Pulse generation
   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-18 (FSML+) - B-12 (FSML-)	-	Front side marker lights drive output	Front side marker lights off	Below 1 V
   			Front side marker lights on	11 to 14 V
   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-13 (TURN-)	-	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-13 (LINLI) - Body ground	-	LIN communication line	Ignition switch off	Below 1 V
   			Ignition switch ON	Pulse generation

   1. *: w/ AFS

Fig 4: No. 1 Headlight ECU Sub-Assembly LH (For Single Beam Headlight) Connector End View

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the A15 No. 1 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)	Wiring Color	Terminal Description	Condition	Specified Condition
   A15-4 (IG) - Body ground	V - Body ground	Ignition power supply	Ignition switch off	Below 1 V
   			Ignition switch ON	11 to 14 V
   A15-12 (GND) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
   A15-13 (ECUB) - Body ground	V - 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	9.5 to 14 V

3. Connect the A15 No. 1 headlight ECU sub-assembly LH connector.

   HINT: 

   • Since the A15 No. 1 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 No. 1 headlight ECU sub-assembly LH connector 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)	Wiring Color	Terminal Description	Condition	Specified Condition
   A15-9 (CRSL) - Body ground	SB - Body ground	Cornering lights drive output	Cornering lights off	Below 1 V
   			Cornering lights on	8.05 to 11.8 V
   A15-11 (TNS) - Body ground	V - 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)	G - R	Rear height control sensor sub-assembly LH power supply	Ignition switch ON	4.75 to 5.25 V
   A15-17 (SHRL) - A15-15 (SGR)	W - R	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)
   A15-23 (CANL) - Body ground	W - Body ground	CAN communication line	Ignition switch off	Below 1 V
   			Ignition switch ON	Pulse generation
   A15-24 (CANH) - Body ground	G - Body ground	CAN communication line	Ignition switch off	Below 1 V
   			Ignition switch ON	Pulse generation
   B-4 (LOLED2) - B-5 (LOLED1)	-	Low beam headlights drive output	Low beam headlights off	Below 1 V
   			Low beam headlights on	10 to 19 V
   B-8 (ACTSI) - B-17 (ACTGI)	-	Headlight leveling motor signal output	Ignition switch ON, low beam headlights on, vehicle height not changed	Below 1 V
   			Ignition switch ON, low beam headlights on, vehicle height changed and maintained for more than 3 seconds	1.0 to 14 V
   B-7 (ACTBI) - B-17 (ACTGI)	-	Headlight 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-18 (FSML+) - B-1 (DRL/CLL-)	-	Front side marker lights drive output	Front side marker lights off	Below 1 V
   			Front side marker lights on	11 to 14 V
   B-20 (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-9 (TURN+) - B-13 (TURN-)	-	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

Fig 5: No. 1 Headlight ECU Sub-Assembly RH (For Triple Beam Headlight) Connector End View

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the A16 No. 1 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)	Wiring Color	Terminal Description	Condition	Specified Condition
   A16-4 (IG) - Body ground	W - Body ground	Ignition power supply	Ignition switch off	Below 1 V
   			Ignition switch ON	11 to 14 V
   A16-12 (GND) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
   A16-13 (ECUB) - Body ground	R - 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	9.5 to 14 V

3. Connect the A16 No. 1 headlight ECU sub-assembly RH connector.

   HINT: 

   • Since the A16 No. 1 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 No. 1 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)	Wiring Color	Terminal Description	Condition	Specified Condition
   A16-9 (CRSR) - Body ground	L - Body ground	Cornering lights drive output	Cornering lights off	Below 1 V
   			Cornering lights on	8.05 to 11.8 V
   A16-11 (TNS) - Body ground	G - 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*	V - Body ground	LIN communication line	Ignition switch off	Below 1 V
   			Ignition switch ON	Pulse generation
   A16-20 (LINL) - Body ground	SB - Body ground	LIN communication line	Ignition switch off	Below 1 V
   			Ignition switch ON	Pulse generation
   A16-23 (CANL) - Body ground	W - Body ground	CAN communication line	Ignition switch off	Below 1 V
   			Ignition switch ON	Pulse generation
   A16-24 (CANH) - Body ground	B - 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	24.2 to 35.4 V
   B-4 (FANB) - B-14 (FANG)	-	Headlight fan power source	Low beam headlights off	Below 1 V
   			Low beam headlights on	4.75 to 5.25 V
   B-9 (ACTBI) - B-17 (ACTGI)	-	Headlight swivel motor and headlight 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-15 (FANP) - B-14 (FANG)	-	Headlight fan control signal input	Low beam headlights off	Below 1 V
   			Low beam headlights on	Pulse generation
   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-18 (FSML+) - B-12 (FSML-)	-	Front side marker lights drive output	Front side marker lights off	Below 1 V
   			Front side marker lights on	11 to 14 V
   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-13 (TURN-)	-	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-13 (LINLI) - Body ground	-	LIN communication line	Ignition switch off	Below 1 V
   			Ignition switch ON	Pulse generation

   1. *: w/ AFS

Fig 6: No. 1 Headlight ECU Sub-Assembly RH (For Single Beam Headlight) Connector End View

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the A16 No. 1 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)	Wiring Color	Terminal Description	Condition	Specified Condition
   A16-4 (IG) - Body ground	W - Body ground	Ignition power supply	Ignition switch off	Below 1 V
   			Ignition switch ON	11 to 14 V
   A16-12 (GND) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
   A16-13 (ECUB) - Body ground	R - 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	9.5 to 14 V

3. Connect the A16 No. 1 headlight ECU sub-assembly RH connector.

   HINT: 

   • Since the A16 No. 1 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 No. 1 headlight ECU sub-assembly RH connector 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)	Wiring Color	Terminal Description	Condition	Specified Condition
   A16-9 (CRSR) - Body ground	L - Body ground	Cornering lights drive output	Cornering lights off	Below 1 V
   			Cornering lights on	8.05 to 11.8 V
   A16-11 (TNS) - Body ground	G - 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
   A16-23 (CANL) - Body ground	W - Body ground	CAN communication line	Ignition switch off	Below 1 V
   			Ignition switch ON	Pulse generation
   A16-24 (CANH) - Body ground	B - Body ground	CAN communication line	Ignition switch off	Below 1 V
   			Ignition switch ON	Pulse generation
   B-4 (LOLED2) - B-5 (LOLED1)	-	Low beam headlights drive output	Low beam headlights off	Below 1 V
   			Low beam headlights on	10 to 19 V
   B-8 (ACTSI) - B-17 (ACTGI)	-	Headlight leveling motor signal output	Ignition switch ON, low beam headlights on, vehicle height not changed	Below 1 V
   			Ignition switch ON, low beam headlights on, vehicle height changed and maintained for more than 3 seconds	1.0 to 14 V
   B-7 (ACTBI) - B-17 (ACTGI)	-	Headlight 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-18 (FSML+) - B-1 (DRL/CLL-)	-	Front side marker lights drive output	Front side marker lights off	Below 1 V
   			Front side marker lights on	11 to 14 V
   B-20 (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-9 (TURN+) - B-13 (TURN-)	-	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

Refer to TERMINALS OF ECU [10/2018 - 10/2019] Refer to TERMINALS OF ECU [10/2019 - 07/2022]

Refer to TERMINALS OF ECU [10/2018 - 07/2022]

Refer to TERMINALS OF ECU [10/2018 - 07/2022]