Launch KES-200 - Relative Compression

LAUNCH KES-200 PC Link
H-1
Relative Compression
The relative compression of engine cylinder is a
parameter related to the sealing of valves and pistons.
It is not easy to measure this parameter without
disassembling the engine. However, we can measure
the starting current to find the variation of relative
compression and judge the equality of compression
of each cylinder.
Units and Parts Required
To perform the relative compression test, the following
parts or units are required:
z KES-200 main unit
z Engine analysis cartridge
z Main cable
z Cigarette lighter cable or battery cable
z Starting current adapter
z Ground cable
z Cylinder 1 signal cable
z Cylinder disabling cable
Connection
Refer to Fig.7-41 to connect the unit and the vehicle.
6
3
4
5
2
7
9
8
1
13
10
11
12
Fig.7-41
1. KES-200 main unit
2. Engine analysis cartridge
3. Battery cable
4. Battery
5. Starter current wire
6. Starting current adapter
7. Ground cable
8. Cylinder disabling cable
9. Ignition coil
10. Another end of starting current adapter (to
channel 4)
11. Cylinder 1 signal cable
12. Cylinder 1 high-tension cable
13. Main cable
1. Insert the Engine analysis cartridge into the slot
of KES-200 main unit.
2. Power the main unit from the battery or the
cigarette lighter.
3. Connect one end of the starting current adapter
to the channel 4 of KES-200, and the other end
(with starting current clip) to the starter current
wire that connects to the battery on vehicle.
(Make sure that the arrow direction on the large
current clip accords with the current direction of
the generator: if the clip is connected to positive
pole, the arrow should point to outside from
positive pole; if the clip is connected to the
negative pole, the arrow should point to
negative pole from outside)
4. Connect one end of the ground cable to the
grounding part of vehicle, and the other end to
channel 5 of KES-200.
5. Connect the clip end of the cylinder disabling
cable to the primary ignition coil (red to “+” and
black to “-“), and the 15pin male connector to
the main cable. Connect the other end of the
main cable to the KES-200 main unit.
Note:
♦ Make sure that all cables are connected
properly before starting the engine
♦ Take care not to touch the probe, as there is
a high volt voltage on the probe while
testing.
♦ If the unit is not properly connected, the
relative compression test cannot be
performed.
♦ Make sure that the ground cable is properly
connected when performing the relative
compression test.
Operation Procedures
On the start interface, press any key (except [Reset],