Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Terminals Of Ecu

Toyota Corolla Cross (2022-2024) Service Manual / Engine & Hybrid System / Stop And Start / Stop And Start System / Terminals Of Ecu

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)

Terminal Description

Condition

Specified Condition

A168-1 (BIN2) - Body ground

Auxiliary battery

Always

9.5 to 14 V

A168-2 (GND2) - Body ground

Ground

Always

Below 1 Ω

A168-3 (BIN1) - Body ground

Auxiliary battery

Always

9.5 to 14 V

A168-8 (GND1) - Body ground

Ground

Always

Below 1 Ω

A169-1 (+B) - Body ground

Power source of engine stop and start ECU

Ignition switch ON

9.5 to 14 V

A169-6 (DGND) - Body ground

Ground

Always

Below 1 Ω

A169-10 (NE) - Body ground

Engine speed signal from ECM

Always

10 kΩ or higher

I230-13 (CANH) - Body ground

CAN communication

Always

200 Ω or higher

I230-14 (CANL) - Body ground

CAN communication

Always

200 Ω or higher

I230-15 (LC1H) - Body round

Local bus communication line

Always

200 Ω or higher

I230-16 (LC1L) - Body round

Local bus communication line

Always

200 Ω or higher

I230-18 (IGP) - Body ground

Ignition switch signal

Ignition switch ON

9.5 to 14 V

I230-19 (ACC) - Body ground

Ignition switch signal

Ignition switch ACC

9.5 to 14 V

I230-21 (IGR) - 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)

Terminal Description

Condition

Specified Condition

A168-6 (OP21) - A169-6 (DGND)

Oil pump with motor assembly drive power source signal

One of the following conditions is met:

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

10.5 to 16 V

A169-3 (BRE2) - Body ground

Ground (vacuum sensor assembly)

Always

Below 1 Ω

A169-7 (BNT1) - A169-6 (DGND)

Engine hood courtesy switch (hood lock with courtesy light switch 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

A169-9 (OPMI) - A169-6 (DGND)

Oil pump with motor assembly directions signal

One of the following conditions is met:

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

Pulse generation

(See waveform 1)

A169-10 (NE) - A169-6 (DGND)

Engine speed signal from ECM

Idling after engine warmed up

Pulse generation

(See waveform 2)

A169-13 (PB) - A169-3 (BRE2)

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

A169-14 (BRVC) - A169-6 (DGND)

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

4.5 to 5.5 V

A169-17 (CLL) - A169-6 (DGND)

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

A169-19 (DON2) - A169-6 (DGND)*1

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

Engine running

Pulse generation

(see waveform 3)

A169-21 (STA) - A169-6 (DGND)

Starter pinion operation signal

Cranking

6.0 V or more

A169-27 (NOPM) - A169-6 (DGND)

Oil pump with motor assembly speed signal

One of the following conditions is met:

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

Pulse generation

(See waveform 4)

I230-23 (IG31) - A169-6 (DGND)

Backup boost converter signal

Ignition switch ON

10.5 to 16 V

I230-2 (B41) - A169-6 (DGND)

Backup boost converter signal

Always

10.5 to 16 V

I230-3 (IG41) - A169-6 (DGND)

Backup boost converter signal

Ignition switch ON

10.5 to 16 V

I230-5 (ECAN) - A169-6 (DGND)

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

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

8 to 14 V

I230-10 (IG12) - A169-6 (DGND)

Backup boost converter signal

Ignition switch ON

10.5 to 16 V

I230-18 (IGP) - A169-6 (DGND)

Ignition switch signal

Ignition switch ACC

Below 1 V

Ignition switch ON

9.5 to 14 V

I230-19 (ACC) - A169-6 (DGND)

Ignition switch signal

Ignition switch off

Below 1 V

Ignition switch ACC

9.5 to 14 V

I230-21 (IGR) - A169-6 (DGND)

Ignition switch signal

Ignition switch ACC

Below 1 V

Ignition switch ON

9.5 to 14 V
  • *1: for 9 Speakers

(e) Waveform 1

Item

Content

Tester Connection

A169-9 (OPMI) - A169-6 (DGND)

Tool Setting

5 V/DIV., 5 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 "Oil Pump" being performed

(f) Waveform 2

Item

Content

Tester Connection

A169-10 (NE) - A169-6 (DGND)

Tool Setting

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

Condition

Idling after engine warmed up

(g) Waveform 3

Item

Content

Tester Connection

A169-19 (DON2) - A169-6 (DGND)

Tool Setting

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

Condition

Engine running

(h) Waveform 4

Item

Content

Tester Connection

A169-27 (NOPM) - A169-6 (DGND)

Tool Setting

5 V/DIV., 5 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 "Oil Pump" being performed

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