7 oscilloscope diagnostic optional lits

Tổng quan về bộ đo xung VMI dành cho G-Scan 2. bộ VMI là một option riêng dành cho máy chẩn đoán G-Scan 2. bộ này có chức năng đo xung của các cảm biến, mô phỏng xung của các cảm biến để gửi về ECU để kiểm tra chức năng điều khiển của ECU

METHOD OF DIAGNOSING VEHICLES WITH OSCILLOSCOPE AND OPTIONAL KITS.

VMI Pack plies.

Sup Scope Pin (Red & Black)

- Scope Clip (Red & Black)

- Spring Pin (Grey)

- Scope Cable A (Red)- Scope Cable B (Yellow)- Ground Cable

(Green)

-COP Quick Pick UP Probe

- Ignition Probe

(High Voltage Cable)

- Pressure Sensor

VMI Pack Optional Kits.

VMI Pack Optional Kits.

Rough & Unstable Idling.

SPARK PLUG

INJECTOR

O2

Injector oscilloscope analysis.

Battery V

Less than battery (V)(+)cable of injector prob-lem

Injector oscilloscope analysis.

Battery V

Surge voltage is low(+)(-) or injector

Less than battery (V)(+)cable of injector prob-lem

Injector oscilloscope analysis.

Surge voltage is low(+)(-) or injector

Injector oscilloscope analysis.

Battery V

Surge voltage is low(+)(-) or injector

Less than battery (V)(+)cable of injector prob-lem

TR OFF (APPROXIMATE LESS THAN 1V)

Injector oscilloscope analysis.

Battery V

Less than battery (V)(+)cable of injector problem

Surge voltage is low(+)(-) or injector

Ground (v) has be less than 0.5~0.8V

The line or connector is problem between injector and ECU

Injector oscilloscope analysis.

Injector oscilloscope analysis.

Injector oscilloscope analysis.

Pulsa-Manifold Absolute Pressure Sensor

Con-trol).

Con-trol).

Manifold Absolute Pressure Sensor

Air-Fuel Ratio (AFR) is the mass ratio of air to fuel

present in an internal combustion engine.If exactly enough air is provided to completely burn all of

the fuel

*14.7 : 1 => λ = 1 - λ > 1 => Lean Mix-ture

- λ < 1 => Rich ture

Con-trol).

Oxygen

Sen-sor(G + Signal)

Con-trol).

Sensor 1 : 0.1~0.9V

Con-trol).

Sensor 2Normal: 0.6~0.85V

Con-trol).

Air & Fuel ratio (Feedback trol).

Con-Sensor 2: Normal: 0.6~0.8VBad catalytic converter: 0.3 ~0.85V sine wave

Con-trol).

genSensor

Con-trol).

Throttle Position Sensor.

Reference (V)

Ground

5V DTC: Throttle Position

Sensor Malfunction.

Throttle Position Sensor.

Reference (V)

Ground

5V

Throttle Position Sensor.

No reacting !

Ω

TPS

MAP + TPS sis.

TPS

MAP + TPS sis.

Analy-Compressor Test.

Ignition Test.

Distributor Less IgnitionCoil On Plug Ignition

Distributor Less tion.

Distributor Less tion.

Igni-Dwell : 3~4ms

Distributor Less tion.

Igni-Earths netic field variation.TR On

mag-TR Off

(Induced electro motive force)

Peak Voltage : 7~15 kv

Comparing peak V : 3 kv

Distributor Less tion.

Igni-Spark voltage: 1.2~2.0kv

Spark time : 1~2ms

Distributor Less tion.

Igni-Coil On Plug Ignition.

Thank you.