21/09/2022 16:44 Electronically Controlled Brake System (HV Model) - Terminals Of ECU [01/2019 - ] (Antilock Brakes / Traction Control

Control Syste…
2022 Toyota Corolla Sedan L4-1.8L (2ZR-FXE) híbrido
Veículo > Freios e Controle de Tração > Freios Antibloqueio / Sistemas de Controle de Tração > Teste e Inspeção
> Valores de Pinagem e Parâmetros de Diagnóstico

SISTEMA DE FREIO CONTROLADO ELETRONICAMENTE (MODELO HV) -

TERMINAIS DA ECU [01/2019 - ]

CONTROLE DE FREIO / SISTEMAS DE CONTROLE DINÂMICO: SISTEMA DE

FREIO COM CONTROLE ELETRÔNICO (para modelo HV): TERMINAIS DA ECU ;
2020 - 2022 MY Corolla Corolla HV [01/2019 - ]
1. TERMINAIS DE ECU

Componente sem
chicote conectado
( ECU Skid Control (
*uma - -
Reforço de Freio com
Conjunto do Cilindro
Mestre ))

Terminal No. (Symbol) Descrição do Terminal

1 (MRO1) Saída de alimentação do motor 1

2 (RM1) Entrada de alimentação do motor 1

Saída da fonte de alimentação do sensor de

3 (FR+)
velocidade dianteiro RH (+)

Entrada de sinal do sensor de velocidade

4 (FR-)
dianteiro RH (-)
5 (+BI2) +BI2 entrada de fonte de alimentação
6 - (Not used)
7 (RR+) Rear speed sensor RH (+) power supply output
8 (RR-) Rear speed sensor RH (-) signal input

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21/09/2022 16:44 Electronically Controlled Brake System (HV Model) - Terminals Of ECU [01/2019 - ] (Antilock Brakes / Traction Control Syste…

Terminal No. (Symbol) Descrição do Terminal

9 (IG2) IG2 power source input
10 - (Not used)
11 (SP1) Speed sensor signal output
12 (STP) Stop light switch assembly input
13 (SKG1) Brake pedal stroke sensor assembly ground 1
14 (+BS) ABS solenoid drive power output
15 (+BI1) +BI1 power source input
Brake fluid level warning switch (Brake booster
16 (LBL)
with master cylinder assembly) input
Brake pedal stroke sensor assembly signal input
17 (SKS1)
1
VSC OFF switch (Combination switch assembly)
18 (CSW)
input
Brake pedal stroke sensor assembly signal input
19 (SKS2)
2
Brake hold switch (Electric parking brake switch
20 (CSW2)
assembly) input
Brake pedal stroke sensor assembly power supply
21 (VSK2)
output 2
Stop light control relay (Stop light switch
22 (STPO)
assembly) output
23 (IG1) IG1 power source input
Front door courtesy light switch assembly LH
24 (CTY)
input
Brake pedal stroke sensor assembly power supply
25 (VSK1)
output 1
Skid control ECU (Brake booster with master
26 (GND1)
cylinder assembly) ground 1
27 (MRO2) Motor power supply output 2
28 (MRI2) Motor power supply input 2
29 (CA2L) CAN communication line 2 (L)
30 (CA2H) CAN communication line 2 (H)
31 (FL+) Front speed sensor LH (+) power supply output
32 (FL-) Front speed sensor LH (-) signal input
33 (SKG2) Brake pedal stroke sensor assembly ground 2
34 (RL+) Rear speed sensor LH (+) power supply output
35 (RL-) Rear speed sensor LH (-) signal input
36 - (Not used)
Stop light control relay (Stop light switch
37 (STP2)
assembly) input
38 - (Not used)
Skid control ECU (Brake booster with master
39 (GND2)
cylinder assembly) ground 2
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21/09/2022 16:44 Electronically Controlled Brake System (HV Model) - Terminals Of ECU [01/2019 - ] (Antilock Brakes / Traction Control Syste…

Terminal No. (Symbol) Descrição do Terminal

40 (+BM) ABS motor drive power output
41 (BM) ABS motor relay power supply input
42 (CA1L) CAN communication line 1 (L)
43 (CA1H) CAN communication line 1 (H)
44 (SFRR) Front ABS reduction solenoid RH (-) output
45 (SFLR) Front ABS reduction solenoid LH (-) output
46 (SRRR) Rear ABS reduction solenoid RH (-) output
47 (SRLR) Rear ABS reduction solenoid LH (-) output
48 (SFRH) Front ABS holding solenoid RH (-) output
49 (SFLH) Front ABS holding solenoid LH (-) output
50 (SRRH) Rear ABS holding solenoid RH (-) output
51 (SRLH) Rear ABS holding solenoid LH (-) output
52 (BS) ABS solenoid relay power supply input

2. TERMINAL INSPECTION
a. Disconnect the connector and measure the voltage or resistance on the wire harness side.

Front view of wire

harness connector
(to Skid Control ECU
*a - -
(Brake Booster with
Master Cylinder
Assembly))

HINT:

The voltage cannot be measured with the connector connected to the skid control ECU (brake
booster with master cylinder assembly) as the connector is watertight.

Standard

Terminal No. (Sy Terminal Descripti Specified Conditio

Wiring Color Condition
mbol) on n
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21/09/2022 16:44 Electronically Controlled Brake System (HV Model) - Terminals Of ECU [01/2019 - ] (Antilock Brakes / Traction Control Syste…

Terminal No. (Sy Terminal Descripti Specified Conditio

Wiring Color Condition
mbol) on n
A48-2 (MRI1) - Motor power
B - Body ground Always 11 to 14 V
Body ground supply input 1
A48-5 (+BI2) - +BI2 power
B - Body ground Always 11 to 14 V
Body ground source input
A48-9 (IG2) - Body IG2 power source Power switch on
W - Body ground 11 to 14 V
ground input (IG)
Stop light switch
assembly on →
A48-12 (STP) - Stop light switch off 11 to 14 V → 1.5
LG - Body ground
Body ground assembly input (Brake pedal V or less
depressed →
released)
A48-15 (+BI1) - +BI1 power
V - Body ground Always 11 to 14 V
Body ground source input
Brake fluid level
warning switch
Brake fluid level
A48-16 (LBL) - (Brake booster 1.84 to 2.16 kΩ →
P - Body ground warning switch
Body ground with master Below 1 Ω
off → on
cylinder
assembly) input
VSC OFF switch
VSC OFF switch
(Combination
A48-18 (CSW) - (Combination Below 50 Ω → 10
BR - Body ground switch assembly)
Body ground switch assembly) kΩ or higher
held on → off
input
(Released)
Brake hold switch
Brake hold switch
(Electric parking
A48-20 (CSW2) - (Electric parking Below 50 Ω → 10
LG - Body ground brake switch
Body ground brake switch kΩ or higher
assembly) held on
assembly) input
→ off (Released)
Stop light control
A48-22 (STPO) - relay (Stop light
P - Body ground Always 11 to 14 V
Body ground switch assembly)
output
A48-23 (IG1) - IG1 power source Power switch on
B - Body ground 11 to 14 V
Body ground input (IG)
Front door
A48-24 (CTY) - courtesy light Driver door closed 11 to 14 V → 1.5
Y - Body ground
Body ground switch assembly → open V or less
LH input
1 minute or more
Skid control ECU
after
(Brake booster
disconnecting the
A48-26 (GND1) - W-B - Body with master
cable from the Below 1 Ω
Body ground ground cylinder
negative (-)
assembly) ground
auxiliary battery
1
terminal
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Terminal No. (Sy Terminal Descripti Specified Conditio

Wiring Color Condition
mbol) on n
A48-28 (MRI2) - Motor power
R - Body ground Always 11 to 14 V
Body ground supply input 2
Conjunto do
Entrada do relé de interruptor da luz
controle da luz de de freio ligado →
A48-37 (STP2) - GR - Terra da 11 a 14 V → 1,5 V
parada (conjunto desligado
Body ground carroceria ou menos
do interruptor da (pedal de freio
luz de parada) pressionado →
liberado)
Controle de skid 1 minuto ou mais
ECU (Aumentador após desconectar
A48-39 (GND2) -
WB - Terra do de freio com o cabo do
Terra da Abaixo de 1Ω
corpo conjunto do terminal negativo
carroceria
cilindro mestre) (-) da bateria
terra 2 auxiliar
A48-41 (BM) - Entrada de
W - Terra da
Terra da alimentação do Sempre 11 a 14 V
carroceria
carroceria relé do motor ABS
Entrada de
A48-52 (BS) -
W - Terra da alimentação do
Aterramento da Sempre 11 a 14 V
carroceria relé do solenóide
carroceria
ABS

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