Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM100000001HG84
Model Year Start: 2019 Model: RAV4 Prod Date Range: [02/2019 - 08/2020]
Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster): TERMINALS OF ECU; 2019 - 2020 MY RAV4 RAV4 HV [02/2019 - 08/2020]

TERMINALS OF ECU

TERMINALS OF ECU

*a

Component without harness connected

(Skid Control ECU (Brake Booster with Master Cylinder Assembly))

-

-

Terminal No. (Symbol)

Terminal Description

1 (MRI1)

Motor power supply input 1

2 (MRI2)

Motor power supply input 2

3 (STPO)

Stop light control relay (Stop light switch assembly) output

4

- (Not used)

5 (FR-)

Front speed sensor RH (-) signal input

6 (STP2)

Stop light control relay (Stop light switch assembly) input

7 (RL-)

Rear speed sensor LH (-) signal input

8 (CSW)

VSC OFF switch input

9 (RR-)

Rear speed sensor RH (-) signal input

10 (HZRI)

Brake hold switch (Integration control and panel assembly) input

11 (SP1)

Speed sensor signal output

12 (IG2)

IG2 power source input

13

- (Not used)

14 (BI)

+B power source input

15 (BS)

Solenoid power supply input

16 (IG1)

IG1 power source input

17

- (Not used)

18 (FR+)

Front speed sensor RH (+) power supply output

19 (CTY)

Front door courtesy light switch assembly input

20 (RL+)

Rear speed sensor LH (+) power supply output

21

- (Not used)

22 (RR+)

Rear speed sensor RH (+) power supply output

23 (GND6)

Skid control ECU (Brake booster with master cylinder assembly) ground 6

24 (GND5)

Skid control ECU (Brake booster with master cylinder assembly) ground 5

25 (GND4)

Skid control ECU (Brake booster with master cylinder assembly) ground 4

26 (GND3)

Skid control ECU (Brake booster with master cylinder assembly) ground 3

27 (GND2)

Skid control ECU (Brake booster with master cylinder assembly) ground 2

28 (GND)

Skid control ECU (Brake booster with master cylinder assembly) ground

29 (MRO1)

Motor power supply output 1

30 (MRO2)

Motor power supply output 2

31 (FL+)

Front speed sensor LH (+) power supply output

32 (FL-)

Front speed sensor LH (-) signal input

33 (STP)

Stop light switch assembly input

34 (CA2L)

CAN communication line 2 (L)

35 (CA2H)

CAN communication line 2 (H)

36 (LBL)

Brake fluid level warning switch input

37 (CA1H)

CAN communication line 1 (H)

38 (CA1L)

CAN communication line 1 (L)

39 (VCSK)

Brake pedal stroke sensor assembly power supply output

40 (SKS2)

Brake pedal stroke sensor assembly signal input 2

41 (SKG)

Brake pedal stroke sensor assembly ground

42 (SKS)

Brake pedal stroke sensor assembly signal input

TERMINAL INSPECTION

(a) Disconnect the connector and measure the voltage or resistance on the wire harness side.

*a

Front view of wire harness connector

(to Skid Control ECU (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. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

A42-1 (MRI1) - Body ground

B - Body ground

Motor power supply input 1

Always

11 to 14 V

A42-2 (MRI2) - Body ground

G - Body ground

Motor power supply input 2

Always

11 to 14 V

A42-3 (STPO) - Body ground

L - Body ground

Stop light control relay (Stop light switch assembly) output

Ignition switch ON

11 to 14 V

A42-6 (STP2) - Body ground

BE - Body ground

Stop light control relay (Stop light switch assembly) input

Brake pedal depressed → released

11 to 14 V → Below 1.5 V

A42-8 (CSW) - Body ground

L - Body ground

VSC OFF switch input

VSC OFF switch pressed and held → released

Below 1 Ω → 10 kΩ or higher

A42-10 (HZRI) - Body ground

LG - Body ground

Brake hold switch (Integration control and panel assembly) input

Brake hold switch (integration control and panel assembly) pressed and held → released

Below 1 Ω → 10 kΩ or higher

A42-12 (IG2) - Body ground

R - Body ground

IG2 power source input

Ignition switch ON

11 to 14 V

A42-14 (B1) - Body ground

SB - Body ground

+B power source input

Always

11 to 14 V

A42-15 (BS) - Body ground

BE - Body ground

Solenoid power supply input

Always

11 to 14 V

A42-16 (IG1) - Body ground

GR - Body ground

IG1 power source input

Ignition switch ON

11 to 14 V

A42-19 (CTY) - Body ground

V - Body ground

Front door courtesy light switch assembly input

Driver door closed → open

Pulse generation → Below 1.5 V

A42-23 (GND6) - Body ground

W-B - Body ground

Skid control ECU (Brake booster with master cylinder assembly) ground 6

Always

Below 1 Ω

A42-24 (GND5) - Body ground

W-B - Body ground

Skid control ECU (Brake booster with master cylinder assembly) ground 5

Always

Below 1 Ω

A42-25 (GND4) - Body ground

W-B - Body ground

Skid control ECU (Brake booster with master cylinder assembly) ground 4

Always

Below 1 Ω

A42-26 (GND3) - Body ground

W-B - Body ground

Skid control ECU (Brake booster with master cylinder assembly) ground 3

Always

Below 1 Ω

A42-27 (GND2) - Body ground

W-B - Body ground

Skid control ECU (Brake booster with master cylinder assembly) ground 2

Always

Below 1 Ω

A42-28 (GND) - Body ground

LA - Body ground

Skid control ECU (Brake booster with master cylinder assembly) ground

Always

Below 1 Ω

A42-33 (STP) - Body ground

G - Body ground

Stop light switch assembly input

Stop light switch assembly on → off

(Brake pedal depressed → released)

11 to 14 V → Below 1.5 V

A42-36 (LBL) - Body ground

R - Body ground

Brake fluid level warning switch input

Brake fluid level warning switch off → on

1.84 to 2.16 kΩ → Below 1 Ω