Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM100000001KZ73
Model Year Start: 2020 Model: RAV4 Prod Date Range: [10/2019 - 12/2021]
Title: STOP AND START: STOP AND START SYSTEM: TERMINALS OF ECU; 2020 - 2021 MY RAV4 [10/2019 - 12/2021]

TERMINALS OF ECU

ENGINE STOP AND START ECU

(a) Disconnect the engine stop and start ECU connectors.

(b) Measure the resistance and voltage according to the value(s) in the table below.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

A33-1 (BIN2) - Body ground

W - Body ground

Battery

Always

9.5 to 14 V

A33-2 (GND2) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

A33-3 (BIN1) - Body ground

B - Body ground

Battery

Always

9.5 to 14 V

A33-8 (GND1) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

A34-1 (+B) - Body ground

R - Body ground

Power source of engine stop and start ECU

Ignition switch ON

9.5 to 14 V

A34-6 (DGND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

A34-10 (NE) - Body ground

BR - Body ground

Engine speed signal from ECM

Always

10 kΩ or higher

A32-13 (CANH) - Body ground

R - Body ground

CAN communication

Always

200 Ω or higher

A32-14 (CANL) - Body ground

W - Body ground

CAN communication

Always

200 Ω or higher

A32-18 (IG2) - Body ground

R - Body ground

Ignition switch signal

Ignition switch ON

9.5 to 14 V

A32-19 (ACC) - Body ground

G - Body ground

Ignition switch signal

Ignition switch ACC

9.5 to 14 V

A32-21 (IG1) - Body ground

LG - Body ground

Ignition switch signal

Ignition switch ON

9.5 to 14 V

(c) Reconnect the engine stop and start ECU connectors.

(d) Measure the resistance, voltage and pulse according to the value(s) in the table below.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

A34-3 (BRE2) - Body ground

V - Body ground

Ground (vacuum sensor assembly)

Always

Below 1 Ω

A34-7 (BNT1) - A34-6 (DGND)

Y - W-B

Engine hood courtesy switch (hood lock assembly) signal
  • Ignition switch ON
  • Engine stopped
  • Engine hood closed

Below 1.5 V
  • Ignition switch ON
  • Engine stopped
  • Engine hood open

8 to 14 V

A34-10 (NE) - A34-6 (DGND)

BR - W-B

Engine speed signal from ECM

Idling after engine warmed up

Pulse generation

(See waveform 1)

A34-13 (PB) - A34-3 (BRE2)

SB - V

Vacuum sensor assembly signal
  • Ignition switch ON
  • Absolute pressure of 40 kPa (300 mmHg, 11.8 in.Hg) applied to vacuum sensor assembly

1.6 to 2.0 V
  • Ignition switch ON
  • Absolute pressure of 60 kPa (450 mmHg, 17.7 in.Hg) applied to vacuum sensor assembly

2.2 to 2.6 V
  • Ignition switch ON
  • Atmospheric pressure applied to vacuum sensor assembly

3.4 to 3.8 V

A34-14 (BRVC) - A34-6 (DGND)

W - W-B

Vacuum sensor assembly power supply
  • Ignition switch ON
  • Engine stopped

4.5 to 5.5 V

A34-17 (CLL) - A34-6 (DGND)

R - W-B

Park/Neutral position switch assembly signal
  • Ignition switch ON
  • Shift lever not in P or N

8 to 14 V
  • Ignition switch ON
  • Shift lever in P or N

Below 3.0 V

A34-19 (DON2)*1 - A34-6 (DGND)

L - W-B

External backup boost converter (eco run vehicle converter assembly) signal

Engine running

Pulse generation

(See waveform 2)

A34-21 (STA) - A34-6 (DGND)

LG - W-B

Starter pinion operation signal

Cranking

6.0 V or more

A34-23 (STA2) - A34-6 (DGND)

G - W-B

Starter motor operation signal

Cranking

6.0 V or more

A32-1 (IG31) - A34-6 (DGND)

LA-V - W-B

Backup boost converter signal

Ignition switch ON

10.5 to 16 V

A32-2 (B41) - A34-6 (DGND)

LA-L - W-B

Backup boost converter signal

Always

10.5 to 16 V

A32-3 (IG41) - A34-6 (DGND)

L - W-B

Backup boost converter signal

Ignition switch ON

10.5 to 16 V

A32-5 (ECAN) - A34-6 (DGND)

V - W-B

Stop and start system cancel switch (eco run cancel switch assembly) signal
  • Ignition switch ON
  • Stop and start system cancel switch (eco run cancel switch assembly) pressed

Below 1.5 V
  • Ignition switch ON
  • Stop and start system cancel switch (eco run cancel switch assembly) not pressed

8 to 14 V

A32-6 (IG11) - A34-6 (DGND)

SB - W-B

Backup boost converter signal

Ignition switch ON

10.5 to 16 V

A32-8 (EGND) - A33-8 (GND1)

G - W-B

Oil pump with solenoid assembly directions signal

One of the following conditions is met:

  • Engine stopped by stop and start control
  • Ignition switch ON (engine not running) and Active Test "Electromagnetic Oil Pump" being performed

Pulse generation

(See waveform 3)

A32-9 (EMOP) - A33-8 (GND1)

R - W-B

Oil pump with solenoid assembly directions signal

One of the following conditions is met:

  • Engine stopped by stop and start control
  • Ignition switch ON (engine not running) and Active Test "Electromagnetic Oil Pump" being performed

10.5 to 16 V

A32-10 (IG12) - A34-6 (DGND)

W - W-B

Backup boost converter signal

Ignition switch ON

10.5 to 16 V

A32-12 (B42) - A34-6 (DGND)

LA-B - W-B

Backup boost converter signal

Always

10.5 to 16 V

A32-16 (B12) - A34-6 (DGND)

BR - W-B

Backup boost converter signal

Always

10.5 to 16 V

A32-18 (IG2) - A34-6 (DGND)

R - W-B

Ignition switch signal

Ignition switch ACC

Below 1 V

Ignition switch ON

9.5 to 14 V

A32-19 (ACC) - A34-6 (DGND)

G - W-B

Ignition switch signal

Ignition switch off

Below 1 V

Ignition switch ACC

9.5 to 14 V

A32-21 (IG1) - A34-6 (DGND)

LG - W-B

Ignition switch signal

Ignition switch ACC

Below 1 V

Ignition switch ON

9.5 to 14 V

A32-24 (AC41) - A34-6 (DGND)

BE - W-B

Backup boost converter signal

Ignition switch ACC

10.5 to 16 V

A32-26 (IG13) - A34-6 (DGND)

GR - W-B

Backup boost converter signal

Ignition switch ON

10.5 to 16 V

A32-25 (IL41) - A34-6 (DGND)

Y - W-B

Backup boost converter signal

Headlight dimmer switch (light control switch) in tail or head position

10.5 to 16 V
  • *1: w/ Stereo Component Amplifier Assembly

(e) Waveform 1

Item

Content

Tester Connection

A34-10 (NE) - A34-6 (DGND)

Tool Setting

5 V/DIV., 2 ms./DIV.

Condition

Idling after engine warmed up

(f) Waveform 2

Item

Content

Tester Connection

A34-19 (DON2) - A34-6 (DGND)

Tool Setting

5 V/DIV., 2 ms./DIV.

Condition

Engine running

(g) Waveform 3

Item

Content

Tester Connection

A32-8 (EGND) - A33-8 (GND1)

Tool Setting

10 V/DIV., 20 ms./DIV.

Condition

One of the following conditions is met:

  • Engine stopped by stop and start control
  • Ignition switch ON (engine not running) and Active Test "Electromagnetic Oil Pump" being performed