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8/13/2019 EDP8 Manual Version1.0
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Autocom Diagnostic Partner AB - EDP8 Manual
1
This guide handle the most important functions in EDP8,
you can nd more info under the directhelp.
EDP8 - Engine diagnostic partner
Autocom Diagnostic Partner AB
EDP8 Reference Guide, Version 1.0
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1. Content EDP8
With the aid of EDP8 the user can check:
1. Content EDP8 Page 2
2. Check before measurement Page 2
3. Check the following before starting measurement Page 3
4. Engine temperature Page 3
5. Relative compression Page 4
6. Checking the fuel pressure Page 8
6.1 Checking the fuel pressure (K-Jetronic) Page 96.2 Checking the fuel pressure (L-H Motronic) Page 12
6.3 Checking the fuel pressure (Mono-Jetronic) Page 15
7. Fuel Pressure/Vaccum Page 16
8. Flow Page 17
9. generall measurement (vaccum, current, voltage) Page 19
10. Ignition voltage, Secondary (limited) Page 25
11. File, save and print result Page 26
12. Technical data Page 27
2. Introduction to EDP8There is a great deal of electronics in today’s cars, and this has led to changes in troubleshooting
techniques. Nowadays, this change makes quite different demands on the troubleshooting equipment,
information, training and on the technician whose job it is to do the troubleshooting. Making a quick and
accurate diagnosis means having access to the right diagnosis equipment.
How is a modern car engine designed? The basic principle of a modern engine is more or less the same
as that of the rst engines ever made. This is true of the working principle (two-stroke, four-stroke) and the
mechanical parts of the motor. The mechanical parts have of course been developed and improved over
the years, but the principle is still the same. The areas where development has progressed furthest are
the fuel and ignition systems. Here, the mechanical parts have been replaced by electronics. As far as the
troubleshooting procedure is concerned, it is very important to begin by thoroughly checking all the visible
parts of the engine, such as vacuum hoses, cables, sensors and so on. When you have checked theseitems, the time has come to connect the diagnosis equipment.
What should you check with the diagnosis equipment? The equipment must be able to tell the user how the
electronics are working. This can be achieved with the DIAGNOSIS INSTRUMENT, which allows serial and
parallel measurement of the electronics. For a correct diagnosis it is also important to check the ignition
voltage, fuel pressure, vacuum, compression, currents and the vehicle’s exhaust readings. Using the EDP 8
and a 4(5) gas meter you can now perform a more complete diagnosis.
Before beginning the work of making a diagnosis, the user must always refer to test methods and technical
data recommended by the vehicle manufacturer. This enables the user to draw the correct conclusions.
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3. Check the following before starting measurement:
- Battery condition.
- If the starting voltage of the battery is low (below about 10 V) it must be charged or replaced.
- When testing with the EDP8 it may be a good idea to connect an extra power source to the
vehicle.
- To give reliable results, EDP8 requires a continuous power supply
- A power failure may result in the test giving incorrect readings or being aborted.
- The battery terminals on the DIAGNOSIS INSTRUMENT must be connected to the battery poles, red to
plus (+) and black to minus (–).- Connect the EDP 8 to the “ABS” and “PROBE” terminals on the DIAGNOSIS INSTRUMENT.
4. Engine temperature - EDP8
General
The temperature sensor delivers information about the temperature of the engine. Having the sensor
connected all the time means that the engine temperature is displayed throughout all the tests performed
with the EDP8. This information is highly important for ensuring that the test results are as correct as
possible.
Preparation
Make sure that the ignition is disconnected. Connect the EDP8 to the diagnosis instrument. Take out the
engine oil dipstick. Adjust the length of the probe (A) by moving the adjuster (B) so that the length is thesame as that of the dipstick. Now insert the probe in the dipstick hole of the engine. Connect the 3.5 mm jack
of the temperature sensor to the “Temperature“ socket (9) on the EDP8.
Start measurement
The reading is automatically displayed on the screen during all the tests performed with the EDP8.
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Program functions
Close Closes the program.
Help Help les.
Print Printout.
Car data Choose cylinders, ignition sequence and fuel type here.
Settings Here you choose the measuring range of the tong ammeter, and trigger for cylinder 1.
Cars with a type DI ignition system (Saab) must be run without trigger.
Measure During the measurement, Crank is displayed on the screen for about 10 seconds.value The readings are displayed her as percentages (best cylinder = 100%).
Graph This is the “normal” way to present the measurement.
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Checking engine compression - EDP8
WARNING! (for petrol-engined vehicles)
When testing the compression, always disconnect the ignition system connections to prevent the production
of hazardous voltages. In vehicles with electronic and transistorised ignition systems, hazardous voltages
may occur in both the high-voltage and the low-voltage circuits. Flashovers in the ignition system may also
damage the vehicle’s electronics. On vehicles tted with a catalytic converter and a lambda sond, the fuel
supply must also be disconnected. This is to prevent damage to the catalytic converter and the lambda sond.
Preparations (the description may vary slightly from one model to another)
Petrol (gasoline) - Make sure that the ignition is disconnected. Disconnect the lead from ignition coil pin 1.
On cars tted with a catalytic converter and a lambda sond, remove the fuel pump relay or disconnect the
connections to the injectors.
Diesel - On diesel-powered vehicles, disconnect the leads to the fuel shut-off valve (to prevent damage to
the catalytic converter).
Connecting the compression meter
Remove the spark plugs/glowplugs. Connect the correct spark plug adapter/glowplug adapter (C) to the
cylinder to be tested. Connect together the hose (B) and the spark plug adapter/glowplug adapter (C). Then
connect the hose (B) to the pressure sensor (A). Connect the 3.5 mm jack to the “Pressure” socket (7) onthe EDP unit.
Start measurement
Choose the test for checking engine compression. Under the “Car data“ button you choose cylinders,ignition sequence and fuel type. Under the “Settings“ button, choose measuring range for the pressure
sensor. Measuring range for petrol 0 – 1500 kPa or for diesel 0 – 4000 kPa. To activate the measurement,
press the “Measure“ button in the program. Before measurement begins, information about which cylinder
will be tested is displayed. When you choose OK, measurement starts and “Crank“ is displayed for about
10 seconds. During the measurement, keep the throttle fully open and crank the engine for about
ten seconds. If you want to repeat the measurement, you must rst release the pressure in the line. To do
this, turn the ball valve lever (B) to the on position. When you have nished measuring the compression of
cylinder 1, move the spark plug adapter to cylinder 2, and so on. Compare the reading with the technical
data for the vehicle (see workshop manual).
Normal compression
If the readings agree with the technical data for the engine, measurement is complete. Reinstate.
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Compression low
If the compression is low, check the following:
- Cylinder head gasket
- Valves
- Cracks in cylinder head, engine block, valve or piston
Warning! High pressure! (0-40 bar)
Note: Before you disconnect the hoses, you must release the pressure with valve D.
Program functions
Close - Closes the program.
Help - Help les.
Print - Printout.
Car data - Choose cylinders, ignition sequence and fuel type here.
Settings - Choose the measuring range for the pressure sensor here (1500 kPa for petrol / 4000 kPa for
diesel).
Here you can deselect the graphs you do not want to see.
Measure - Before measurement begins, information about which cylinder will be tested is displayed.
Crank - When you choose OK, measurement starts and “Crank” is displayed for about 10 seconds.
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6. Checking the fuel pressure - EDP8
Program functions
Close Closes the program.
Help Help les.
Print Printout.
Car data Choose cylinders, ignition sequence and fuel type here.
Settings Choose the measuring range for the pressure sensor here (400 kPa / 800 kPa).
Measure/Stop You start and stop the tests here.
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6.1 Checking the fuel pressure (K-Jetronic) - EDP8
Preparations
Make sure that the ignition is off. Release the pressure in the fuel system.
Connecting the pressure meter
Connect the pressure sensor (A) between the control pressure valve and the fuel quantity meter. Use a
three-way valve (B) with the associated hoses and nipples (the three-way valve is not included).
The three-way valve (B) has one input and two outputs as well as a valve that can be used to open or close
one of the outputs. The input marked A must be connected to the fuel quantity meter.
The output marked B must be connected to the control pressure valve. The valve is also connected to this
output. The output with a pressure gauge symbol must be connected to the pressure sensor (A). Then
connect the 3.5 mm jack of the pressure sensor to the “Pressure“ socket (7) on the EDP8.
Starting the fuel pump
Start the engine. If the engine does not start, bridge the pins to the fuel pump relay (system relay) in the relay
holder (see electrical diagram). The fuel pump will now run continuously.
Measuring the system pressure
Note: The valve must be closed.Choose the test for checking fuel pressure. Under the “Car data“ button you choose cylinders, ignition
sequence and fuel type. Under the “Settings“ button, choose measuring range 0 – 800 kPa for the pressure
sensor.
To start measurement, press the “Measure“ button in the program. The system pressure is now measured.
Compare the pressure reading with the technical data for the system (see workshop manual).
To stop the test, press the “Stop“ button in the program.
Note: The three-way valve (B) is not included in article 425 807 pressure sensor.
Normal system pressure
If the system pressure agrees with the technical data, you can proceed to check the control pressure.
System pressure lowIf the system pressure is low, check the following:
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- Check for external leakage
- Check that the accumulator is not leaking
- Check that the pre-pump is working (on certain cars)
- Check lters, strainers on pre-pump and fuel lines for clogging
- Try a new fuel pump
System pressure high
If the system pressure is high, check the following:
- Check that the return line is not blocked
Note: The system pressure and the shutoff pressure can be adjusted (see the workshop manual).
Measuring the control pressure - cold engine
Note: The valve must be open.
The engine must be switched off and cold. The supply to the electric heating of the control pressure valve
must be disconnected (on cars with heating). Bridge the pins to the fuel pump relay (system relay) in the
relay holder (see electrical diagram). The fuel pump will now run continuously. Choose the test for checking
fuel pressure. Under the “Car data“ button you choose cylinders, ignition sequence and fuel type. Under
the “Settings“ button, choose measuring range 0 – 800 kPa for the pressure sensor. To start measurement,
press the “Measure“ button in the program. The system pressure can now be read. Compare the pressure
reading with the technical data for the system (see workshop manual). To stop the test, press the “Stop“button in the program.
Normal control pressure - cold engine
If the cold engine control pressure agrees with the technical data, you can proceed to check the warm engine
control pressure.
Control pressure low - cold engine
If the cold engine control pressure is low, try a new control pressure valve.
Control pressure high - cold engine
If the cold engine control pressure is high, check the following:
- Check that the return line is not blocked
Measuring the control pressure - warm engine
Note: The valve must be open.
Connect the supply to the control pressure valve heating (on cars with heating). Start the engine and warm
it up. Choose the test for checking fuel pressure. Under the “Car data“ button you choose cylinders, ignition
sequence and fuel type. Under the “Settings“ button, choose measuring range 0 – 800 kPa for the pressure
sensor. To start measurement, press the “Measure“ button in the program. The system pressure can now be
read. Compare the pressure reading with the technical data for the system (see workshop manual). To stop
the test, press the “Stop“ button in the program.
Note: Take the nal reading when the pressure has stopped rising.
Normal control pressure - warm engineIf the warm engine control pressure agrees with the technical data, you can proceed to check the full-load
enrichment. If the vehicle does not have this function, proceed to check the shutoff pressure.
Control pressure low - warm engine
If the warm engine control pressure is low, check the following:
- Check the voltage to the control pressure valve
- Check the resistance of the control pressure valve
- If the resistance is wrong or if the control pressure valve is open circuit, replace the valve.
Control pressure high - warm engine
If the warm engine control pressure is high, check the following:
- Check that the return line is not blocked
Measuring the full-load enrichment
Note: The valve must be open.
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Start the engine or bridge the pins to the fuel pump relay (system relay) in the relay holder (see electrical
diagram). Choose the test for checking fuel pressure. Under the “Car data“ button you choose cylinders,
ignition sequence and fuel type. Under the “Settings“ button, choose measuring range 0 – 800 kPa for the
pressure sensor. To start measurement, press the “Measure“ button in the program. Pump out the pressure
from the control pressure valve. Important: Do not pump too strongly, as this might damage the control
pressure valve. The control pressure will now increase. Compare the reading with the technical data for the
system (see workshop manual). When the hose to the vacuum pump is disconnected, the control pressure
must return to the original value. To stop the test, press the “Stop“ button in the program.
Normal full-load enrichment
If the full-load enrichment agrees with the technical data, you can proceed to check the shut-off pressure.
Incorrect full-load enrichment
If the full-load enrichment is incorrect, check the following:
- Check that the vacuum hose is sound and properly connected
- Replace the control pressure valve
Measuring the shut-off pressure
Note: The valve must be open.
Start the engine or bridge the pins to the fuel pump relay (system relay) in the relay holder (see electrical
diagram). This is in order to build up a pressure in the system. Switch off the engine and note the pressurewhen it has stabilised and for about one minute after that.
Reading the pressure: Choose the test for checking fuel pressure. Under the “Car data“ button you choose
cylinders, ignition sequence and fuel type. Under the “Settings“ button, choose measuring range 0 – 800 kPa
for the pressure sensor. To start measurement, press the “Measure“ button in the program. Compare the
shut-off pressure reading with the technical data for the vehicle (see workshop manual).
Normal shut-off pressure
If the shut-off pressure is normal, proceed to the check “Shut-off pressure after about 20 minutes”.
Incorrect shut-off pressure
If the pressure is incorrect, but does not fall, the system pressure and the shut-off pressure must be adjusted.
Falling shut-off pressure
Note: Switch on the ignition for a short time to allow the pressure to build up again.
Close the valves and note the pressure reading after about ve minutes. As long as there is pressure in the
system, the accumulator will compensate for any leakage.
If the pressure stops falling, check the following:
- Leakage on the fuel line from the control pressure valve
- The control pressure valve is passing too much fuel (on certain models). Try a new valve.
- The system pressure valve is not tight (on certain models). Clean or replace the needle valve.
If the pressure continues to fall, check the following:
- Check for external leakage- Check that the system pressure valve is tight
- Check the non-return valve in the fuel pump
Shut-off pressure after about 20 minutes
Note the pressure after about 20 minutes. Compare the shut-off pressure reading with the technical data for
the vehicle (see workshop manual). If the pressure is incorrect, there may be problems starting the engine
when warm.
Normal shut-off pressure after about 20 minutes
Reinstate. Collect any fuel that escapes when the pressure gauge is removed.
Low shut-off pressure after about 20 minutes
If the shut-off pressure is low after about 20 minutes, carry out the “Falling shut-off pressure” test (see
above).
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6.2 Checking the fuel pressure (L. LH. Motronic etc.) - EDP8
Preparations
Make sure that the ignition is off. Release the pressure in the fuel system.
CheckingStart by check that the vacuum hose from the pressure regulator is sound and is not blocked. If the hose is
sound, re-connect it to the pressure regulator.
Connecting the pressure meter
Connect the pressure sensor (A) between the fuel line (from the pump) and the distribution pipe (the pipe
with the injectors). Use the three-way valve (B) with the associated hoses and nipples (for the correct choice
of nipple, see the table).
The three-way valve (B) has one input and two outputs as well as a valve that can be used to open or close
one of the outputs. The input marked A must be connected to the fuel line coming from the pump.
The output marked B must be connected to the distribution pipe. The valve is also connected to this output.
The output with a pressure gauge symbol must be connected to the pressure sensor (A).
Then connect the 3.5 mm jack of the pressure sensor to the “Pressure“ socket (7) on the EDP8.
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Starting the fuel pump
Start the engine. If the engine does not start, bridge the pins to the fuel pump relay (system relay) in the relay
holder (see electrical diagram). The fuel pump will now run continuously.
Measuring the system pressure
Note: The valve must be open.
Choose the test for checking fuel pressure. Under the “Car data“ button you choose cylinders, ignition
sequence and fuel type. Under the “Settings“ button, choose measuring range 0 – 400 kPa for the pressure
sensor. To start measurement, press the “Measure“ button in the program. The system pressure is now
measured. Compare the pressure reading with the technical data for the system (see workshop manual).
To stop the test, press the “Stop“ button in the program.
Normal system pressure
If the system pressure agrees with the technical data, you can proceed to check the pressure regulator.
System pressure low
Squeeze the return line and check whether the pressure rises. Note: The pressure must not go above 6.0
bar.
If the pressure rises rapidly, check the following:
- Pressure regulator (replace if necessary)
- Check whether the system pressure is normal
If the pressure rises slowly:
- Check lters, strainers on pre-pump and fuel lines for clogging
- Check that the system pressure is normal
If the pressure does not rise:
- Try a new fuel pump
- Check that the system pressure is normal
System pressure high
Switch off the ignition and remove the bridging (if any) from the fuel pump relay. Disconnect the return line
from the pressure regulator and blow into the line.
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If the line is OK:
- Try a new pressure regulator
- Check that the system pressure is normal
If the line is blocked:
- Check whether the line has been crushed or is blocked
Checking the pressure regulator
Note: The valve must be open.Connect a vacuum pump to the pressure regulator and pump the air out of the regulator. Choose the test
for checking fuel pressure. Under the “Cardata” button you choose cylinders, ignition sequence and fuel
type. Under the “Settings“ button, choose measuring range 0 – 400 kPa for the pressure sensor. To start
measurement, press the “Measure“ button in the program. The system pressure is now measured. The new
reading must be lower than the previous one. Compare the reading with the technical data for the system
(see workshop manual). When the hose to the vacuum pump is disconnected, the system pressure must
increase again. To stop the test, press the “Stop“ button in the program.
If the system pressure does not change:
- Try a new pressure regulator
Checking the shut-off pressure regulator Note: The valve must be open.
Check after at least 20 minutes that the pressure has not fallen below 2 bar. Choose the test for checking
fuel pressure. Under the “Car data“ button you choose cylinders, ignition sequence and fuel type. Under
the “Settings“ button, choose measuring range 0 – 400 kPa for the pressure sensor. To start measurement,
press the “Measure“ button in the program. The shutoff pressure will now be read. Compare the pressure
reading with the technical data for the system (see workshop manual). To stop the test, press the “Stop“
button in the program.
If the shut-off pressure is OK:
- Finish the measurement procedure
If the pressure falls too rapidly:
- Check that the injection and cold start valve is not leaking- Check that the non-return valve in the fuel pump is not leaking
- Check that the fuel lines are not leaking
- Try a new pressure regulator
Finishing the measurement procedure
Collect any fuel that escapes when the pressure gauge is removed. Reinstate.
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6.3 Checking the fuel pressure (Mono-Jetronic) - EDP8
Preparations
Make sure that the ignition is off. Release the pressure in the fuel system.
Connecting the pressure meter
Connect the pressure sensor (A) between the fuel line (from the pump) and the fuel inlet of the throttle
housing. Use a three-way valve (B) with the associated hoses and nipples (the three-way valve is not
included).The three-way valve (B) has one input and two outputs as well as a valve that can be used to open
or close one of the outputs. The input marked A must be connected to the fuel line coming from the pump.The output marked B must be connected to the fuel inlet of the throttle housing. The valve is also connected
to this output. The output with a pressure gauge symbol must be connected to the pressure sensor (A). Then
connect the 3.5 mm jack of the pressure sensor to the “Pressure“ socket (7) on the EDP8.
Starting the fuel pump
Start the engine. If the engine does not start, bridge the pins to the fuel pump relay (system relay) in the relay
holder (see electrical diagram). The fuel pump will now run continuously.
Measuring the system pressure
Note: The valve must be open.
Choose the test for checking fuel pressure. Under the “Car data“ button you choose cylinders, ignition
sequence and fuel type. Under the “Settings“ button, choose measuring range 0 – 400 kPa for the pressuresensor. To start measurement, press the Measure button in the program. The system pressure is now
measured. Compare the pressure reading with the technical data for the system (see workshop manual).
To stop the test, press the “Stop“ button in the program.
Normal system pressure
If the system pressure agrees with the technical data, you can proceed to check the holding pressure.
System pressure low
If the system pressure is low, replace the upper part of the injection unit:
System pressure high
If the system pressure is high, the following should be checked:
- Check that the return line is clear - Check the upper part of the injection unit and replace it if necessary.
Note: The upper part and the components of the fuel pressure regulator are matched to each other.
Measuring the holding pressure
Note: The valve must be open.
Switch off the engine or remove the bridging. Check the holding pressure for ve minutes. Choose the test
for checking fuel pressure. Under the “Car data“ button you choose cylinders, ignition sequence and fuel
type. Under the “Settings“ button, choose measuring range 0 – 400 kPa for the pressure sensor. To start
measurement, press the Measure button in the program. The holding pressure can now be read. Compare
the pressure reading with the technical data for the system (see workshop manual).
To stop the test, press the “Stop“ button in the program.
Normal holding pressure
Finish the measurement procedure.
Holding pressure low
If the holding pressure falls below the prescribed value, the following should be checked:
- Lines and connections for leaks
- Fuel pump non-return valve
- O-rings around the injection valve
- Whether there is a leak at the injection valve
- Whether the fuel pressure regulator is faulty
Finishing the measurement procedure
Collect any fuel that escapes when the pressure gauge is removed. Reinstate.
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7. Fuel pressure/vacuum - EDP8
The “Fuel pressure/vacuum” test checks the operation of the fuel pressure regulator. The fuel pressure
regulator is usually located at one end of the distribution pipe. Its purpose is to regulate the fuel pressure in
the fuel system. The fuel pressure regulator is set to maintain a fuel pressure of about 2.5 to 3.0 bar (varies
from one model to another). One end of the fuel pressure regulator is connected to the induction manifold
and is subject to the engine vacuum. The vacuum is greatest when the engine is idling and the throttle is
closed. As a result of this, the fuel pressure falls by about 0.5 bar (varies from one model to another).
Preparation (for L. LH and Motronic type fuel systems )
Make sure that the ignition is disconnected. Release the pressure in the fuel system. Connect the pressure
sensor (A) between the fuel line (from the pump) and the distribution pipe (the pipe with the injectors). Use
the three-way valve (B) with the associated hoses and nipples (the three-way valve is not included). Connectthe T-piece of the vacuum sensor (C) between the fuel pressure regulator and its vacuum hose.
Then connect the 3.5 mm jack of the pressure sensor to the “Pressure“ socket (7) on the EDP8.
Connect the 3.5 mm jack of the vacuum sensor to the “Vaccum“ socket (8) on the EDP8.
Connect the EDP8 to the diagnosis instrument. Start the engine.
Note: The connection arrangement may vary slightly from one fuel injection system to another)
Starting measurement of the fuel pressure/vacuum
Note: The valve must be open.Choose the test for checking fuel pressure/vacuum. Under the “Car data“ button you choose cylinders,
ignition sequence and fuel type. Under the Settings button, choose the measuring range for the pressure
sensor here (400 kPa / 800 kPa). To activate the measurement, press the “Measure“ button in the program.
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The system pressure and the vacuum are now measured. Compare the pressure readings with the technical
data for the system (see workshop manual).
Program functions
Close Closes the program.
Help Help les.
Print Printout.
Car data Choose cylinders, ignition sequence and fuel type here.
Settings Choose the measuring range for the pressure sensor here (400 kPa / 800 kPa).Measure/Stop You start and stop the tests here.
8. Flow - EDP8
Preparations
Make sure that the ignition is off. Release the pressure in the fuel system.
Connecting the owmeter
Connect the owmeter (A) between the fuel line (from the lter) and the fuel distributor (observe the direction
of ow). Then connect the 3.5 mm jack of the owmeter to the “Flow“ socket (10) on the EDP8.
Start measurement
Choose the test for checking fuel ow. Under the “Car data“ button you choose cylinders, ignition sequence
and fuel type. Under the “Settings“ button, choose measuring range 5 or 20 litres/min for the ow sensor.
Start the engine and let it idle for a while to clear any air. To start measurement, press the “Measure“ button
in the program. The ow can now be read. Compare the pressure reading with the technical data for the
system (see workshop manual). To stop the test, press the “Stop“ button in the program.
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Vacuum, general measurement - EDP8
Preparation
Connect the 3.5 mm jack of the vacuum sensor to the “Vaccum“ socket (8) on the EDP8.
Start measurement
Choose the test for checking vacuum. Under the”Car data” button you choose cylinders, ignition sequence
and fuel type. To start measurement, press the “Measure“ button in the program. The negative pressure willnow be measured. To stop the test, press the “Stop“ button in the program.
Program functions
Close Closes the program.
Help Help les.
Print Printout.
Car data Choose cylinders, ignition sequence and fuel type here.
Measure/Stop You start and stop the tests here.
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Current, general measurement - EDP8
Preparation
Connect the 3.5 mm jack of the tong ammeter to the “Current“ socket (6) on the EDP8.
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Start measurement
Choose the test for checking current. Under the “Car Data“ button you choose cylinders, ignition sequence
and fuel type. Under the “Settings“ button, choose a measuring range for the tong ammeter (200 – 2000 A).
To start measurement, press the “Measure“ button in the program. The current will now be read. To stop the
test, press the “Stop“ button in the program.
Program functions
Close Closes the program.Help Help les.
Print Printout.
Car data Choose cylinders, ignition sequence and fuel type here.
Settings Choose here the measuring range for the tong ammeter (200, 600, 1200 or 2000 A).
Measure/Stop You start and stop the tests here.
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Voltage, general measurement - EDP8
Preparation
Connect the 3.5 mm jack of the probe to the “Low voltage“ socket (5) on the EDP8.
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10. Ignition voltage, secondary side (limited) EDP8
Warning!
Avoid contact with the parts of the ignition system when the engine is running. Electronic ignition systems
operate with very high voltages on both the primary and the secondary side. Never disconnect connectors
and cables to any of the ignition system components when the ignition is on. Flashovers in the ignition
system may damage the vehicle’s electronics.
Preparations (the description may vary slightly from one model to another)
Make sure that the ignition is disconnected. Connect the EDP 8 to the diagnosis instrument. Connect the
inductive clip (A) to the ignition cable of cylinder 1. Then connect the 3.5 mm jack of the inductive clip to the
“Trigger“ socket (4) on the EDP8.
Start measurement
Start measurement by pressing the “Trig test“ button (1) on the side of the EDP8 (the engine must be
running). The LED (3) on the EDP8 must now start to ash green. This ashing indicates that the secondary
side of the ignition system is delivering an ignition voltage (this signal is also used as a trigger signal in other
measurements with the EDP8).
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General
This type of test is very limited when it comes to checking the secondary side of the ignition system.
But it does give the user a clear indication of whether or not the secondary side of the ignition system is
delivering an ignition voltage.
The engine does not start
If there is no signal at all, this may be due, among other things, to defective ignition coil or ignition output
stage, or absence of a signal from the control unit to the ignition coil or ignition output stage.
The engine starts but does not run smoothly
If there is no signal on one of the ignition cables this may be due to a defective distributor cap, ignition cable
or spark plug. You can also check for these faults by moving the inductive clip to the other ignition cables(switch off the engine rst).
11. Archive, save, and print result - EDP8
Archive - The Archive function is not activated in this version. It will be added later.
Save - The Save function is not activated in this version. It will be added later.
Print - By pressing the “Print“ button in the program you can print out the oscilloscope image displayed on
the screen.
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Example of printout
12. Technical data - EDP8
Measuring ranges
Voltage (low) … 0 - 36 V
Current ……….. 0 - 200 A
0 - 600 A
0 - 1200A
0 - 2000A
Vacuum ………… -1 - 0 bar
Pressure (comp.) …. 0 - 15 bar (0 - 1500 kPa)
0 - 40 bar (0 - 4000 kPa)
Pressure (fuel) ……. 0 - 4 bar
0 - 8 bar
Connections
A: To “PROBE” socket on ADP186 (Meko Tech diagnosis)
B: To “ABS” socket on ADP 186 (Meko Tech diagnosis)
1. Button for trigger
2. Extra
3. LED (green = trigger.
Red = voltage above 9 volts)
4. Inductive pick-up
5. Voltage probe
6. Current tong
7. Pressure sensor 8. Vacuum sensor
9. Temperature sensor
10. Flow sensor
11. Extra