Isuzu KB P190. Manual — part 553

6E–42

ENGINE DRIVEABILITY AND EMISSIONS

ECM CONNECTOR PIN ASSIGNMENT & OUTPUT SIGNAL

Connector J1 Port: View Looking Into ECM Case

1

17

16
32

PIN16

PIN1

PIN17

PIN32

Pin
No.

B/

Box

No.

Pin Function

Wire

Color

Signal or Continuity

ECM

Connection

Tester Position

Key SW

Off

Key SW

On

Engine

Idle

Engine

2000rpm

Range

(+)

(-)

J1-1

J1-1

Ground

BLK/

WHT

Continuity

with

ground

-

-

-

Disconnect

Ω

J1-1

GND

J1-2

J1-2

Ground

BLK/

WHT

Continuity

with

ground

-

-

-

Disconnect

Ω

J1-2

GND

J1-3

J1-3

Knock Sensor Signal

YEL

Less than

1V

-

-

-

-

-

-

-

J1-4

J1-4

No Connection

-

-

-

-

-

-

-

-

-

J1-5

J1-5

Canister Purge
Solenoid Valve

RED/

YEL

Less than

1V

Wave form G or 12-14V

Connect

DC V

J1-5

GND

J1-6

J1-6

Crankshaft Position
(CKP) Sensor (Ground)

RED Approx.

0.58kΩ

-

-

-

Disconnect

Ω

J1-6

J1-21

J1-7

J1-7

Throttle Position
Sensor (TPS) Output
Signal

BLU

Less than

1V

Approx 0.7V

Approx

0.8V

Connect

DC V

J1-7

J1-32

J1-8

J1-8

No. 3 Injector

GRN/

BLK

Less than

1V

Wave form E or 12-14V

Connect

DC V

J1-8

GND

J1-9

J1-9

No. 1 Injector

GRN/

WHT

Less than

1V

Wave form E or 12-14V

Connect

DC V

J1-9

GND

J1-10

J1-10

No Connection

-

-

-

-

-

-

-

-

-

J1-11

J1-11

No. 4 Injector

GRN

Less than

1V

Wave form E or 12-14V

Connect

DC V

J1-11

GND

J1-12

J1-12

No Connection

-

-

-

-

-

-

-

-

-

J1-13

J1-13

Idle Air Control Valve
(IACV) Coil B High

BLU/

RED

Less than

1V

Less than 1V / 10-14V

Connect

DC V

J1-13

GND

J1-14

J1-14

No Connection

-

-

-

-

-

-

-

-

-

J1-15

J1-15

Throttle Position
Sensor (TPS) Power
Supply

RED

Less than

1V

Approx. 5V

Connect

DC V

J1-15

J1-32

J1-16

J1-16

MAP Sensor Ground

GRN

Continuity

with

ground

-

-

-

Connect

Ω

J1-16

GND

J1-17

J1-17

Ground

BLK/

WHT

Continuity

with

ground

-

-

-

Connect

Ω

J1-17

GND

J1-18

J1-18

Coil Module 2 (No. 2 &
3 Cylinder)

BLU -

-

Wave

form

F

-

-

-

-

J1-19

J1-19

Coil Module 1 (No. 1 &
4 Cylinder)

GRN

-

-

Wave form F

-

-

-

-

J1-20

J1-20

No Connection

-

-

-

-

-

-

-

-

-

ENGINE DRIVEABILITY AND EMISSIONS

6E–43

J1-21

J1-21

Crankshaft Position
(CKP) Sensor Signal

WHT -

-

Wave

form

or approx.

3.7V

Wave form

A or

approx.

7.8V

Connect

AC V

J1-21

J1-6

J1-22

J1-22

No.2 Injector

GRN/

WHT

Less than

1V

Wave form E or 12-14V

Connect

DC V

J1-22

GND

J1-23

J1-23

No Connection

-

-

-

-

-

-

-

-

-

J1-24

J1-24

MAP Sensor Signal

GRY

Less than

1V

Approx.

4.8V

Approx.

1.3V

Approx.

0.9V

Connect

DC V

J1-24

J1-16

J1-25

J1-25

No Connection

-

-

-

-

-

-

-

-

-

J1-26

J1-26

No Connection

-

-

-

-

-

-

-

J1-26

-

J1-27

J1-27

Engine Coolant Temp.
(ECT) Sensor Signal

GRY

Less than

1V

20℃: Approx. 2.4V / 40℃: Approx. 1.4V or

4.1V / 60 ℃ : Approx. 3.3V / 80 ℃ : Approx.

2.5V

Connect

DC V

J1-27

J1-32

J1-28

J1-28

Idle Air Control Valve
(IACV) Coil A High

BLU

Less than

1V

Less than 1V / 10-14V

Connect

DC V

J1-28

GND

J1-29

J1-29

Idle Air Control Valve
(IACV) Coil B Low

BLU/

BLK

Less than

1V

Less than 1V / 10-14V

Connect

DC V

J1-29

GND

J1-30

J1-30

Idle Air Control Valve
(IACV) Coil A Low

BLU/
WHT

Less than

1V

Less than 1V / 10-14V

Connect

DC V

J1-30

GND

J1-31

J1-31

MAP Sensor Power
Supply

RED

Less than

1V

Approx.. 5V

Connect

DC V

J1-31

J1-16

J1-32

J1-32

ECT Sensor, Knock
Sensor, Throttle
Position Sensor Ground

GRN

Continuity

with

ground

-

-

-

Connect

Ω

J1-32

GND

Pin
No.

B/

Box

No.

Pin Function

Wire

Color

Signal or Continuity

ECM

Connection

Tester Position

Key SW

Off

Key SW

On

Engine

Idle

Engine

2000rpm

Range

(+)

(-)

6E–44

ENGINE DRIVEABILITY AND EMISSIONS

Connector J2 Port: View Looking Into ECM Case

1

17

16

32

PIN32

PIN1

PIN17

PIN16

Pin
No.

B/

Box

No.

Pin Function

Wire

Color

Signal or Continuity

ECM

Connection

Tester Position

Key SW

Off

Key SW

On

Engine

Idle

Engine

2000rpm

Range

(+)

(-)

J2-1

J2-1

Intake Air Temp. (IAT)
Sensor Ground

GRN

Continuity

with

ground

-

-

-

Disconnect

Ω

J2-1

GND

J2-2

J2-2

Battery Power Supply

RED/

WHT

10-14V

Connect

DC V

J2-2

GND

J2-3

J2-3

Ignition Power Supply

BLU/

YEL

Less than

1V

10-14V

Connect

DC V

J2-3

GND

J2-4

J2-4

To Data Link
Connector No. 6

BLU -

-

-

-

-

-

-

-

J2-5

J2-5

No Connection

-

-

-

-

-

-

-

-

-

J2-6

J2-6

Oxygen Sensor
(Ground)

PNK

Continuity

with

ground

-

-

-

Connect

Ω

J2-6

GND

J2-7

J2-7

No Connection

-

-

-

-

-

-

-

-

-

J2-8

J2-8

No Connection

-

-

-

-

-

-

-

-

-

J2-9

J2-9

No Connection

-

-

-

-

-

-

-

-

-

J2-10

J2-10

CO Adjust Signal
(W/O Catalystic
Converter)

YEL

-

-

-

-

-

-

-

-

J2-11

J2-11

Fuel Pump Relay

GRN/

WHT

10-14V

While relay

is activated;

10-14V

Relay is not

activated;
Less than

1V

10-14V

Connect

DC V

J2-11

GND

J2-12

J2-12

No Connection

-

-

-

-

-

-

-

-

-

J2-13

J2-13

A/C Compressor
Relay

GRY/

RED

Less than

1V

A/C comp. is operated: Less than 1V

A/C comp. is not operated: 10-14V

Connect

DC V

J2-13

GND

J2-14

J2-14

No Connection

-

-

-

-

-

-

-

-

-

J2-15

J2-15

No Connection

-

-

-

-

-

-

-

-

-

J2-16

J2-16

No Connection

-

-

-

-

-

-

-

-

-

J2-17

J2-17

CO Adjust (W/O
Catalystic Converter)

RED

-

-

-

-

-

-

-

-

J2-18

J2-18

Battery Power Supply

RED/

WHT

10-14V

Connect

DC V

J2-18

GND

J2-19

J2-19

No Connection

-

-

-

-

-

-

-

-

-

J2-20

J2-20

Power Steering
Pressure Switch

GRN/

YEL

Less than

1V

Pressure switch is turned on: Less than 1V

Pressure switch is turned off: 10-14V

Connect

DC V

J2-20

GND

J2-21

J2-21

Oxygen Sensor

BLU

Less than

1V

Approx.

0.4V

Wave form D or 0.1 -

0.9V

Connect

DC V

J2-21

J2-6

J2-22

J2-22

Intake Air Temp. (IAT)
Sensor (Signal)

YEL/
GRN

Less than

1V

20℃: Approx. 2.9V / 40℃: Approx. 1.8V V

/ 60 ℃ : Approx. 1.1V / 80 ℃ : Approx. 0.6V

Connect

DC V

J2-22

33

ENGINE DRIVEABILITY AND EMISSIONS

6E–45

J2-23

J2-23

Vehicle Speed Sensor
(VSS) Signal
(Immobilizer Control
Unit Terminal B8)

WHT

-

-

Wave form C or Approx.

6.5V at 20km/h

Connect

AC V

J2-23

GND

J2-24

J2-24

No Connection

-

-

-

-

-

-

-

-

-

J2-25

J2-25

Tachometer Output
Signal

BLK/
RED

-

-

Wave form

Wave form

B or

Approx.

4.5V

Connect

AC V

J2-25

GND

J2-26

J2-26

Thermo Relay

GRN/

BLK

Less than

1V

A/C request is activated: 10-14V

A/C request is not activated: Less than 1V

Connect

DC V

J2-26

GND

J2-27

J2-27

No Connection

-

-

-

-

-

-

-

-

-

J2-28

J2-28

No Connection

-

-

-

-

-

-

-

-

-

J2-29

J2-29

No Connection

-

-

-

-

-

-

-

-

-

J2-30

J2-30

To Data Link
Connector No. 2

GRN

-

-

-

-

-

-

-

-

J2-31

J2-31

Oxygen Sensor Heater

BLU/
WHT

Continuity

with

ground

-

Wave

Form

Wave

Form D

Connect

Ω

J2-31

GND

J2-32

J2-32

Check Engine Lamp
(Immobilizer Control
Unit Terminal B7)

BRN/

YEL

Less than

1V

Less than

1V

Lamp is turned on: Less

than 1V

Lamp is turned off: 10-

14V

Connect

DC V

J2-32

GND

Pin
No.

B/

Box

No.

Pin Function

Wire

Color

Signal or Continuity

ECM

Connection

Tester Position

Key SW

Off

Key SW

On

Engine

Idle

Engine

2000rpm

Range

(+)

(-)