SsangYong Korando II (1996-2006 year). Manual — part 52
M162 ENGINE CONTROLS 1F1 -- 43
DAEWOO MY_2000
KAB1F210
Failure
Code
Description
Trouble Area
Maintenance Hint
34
Fuel pump relay short
circuit to battery
When short circuit to power
source
D
Inspection the Engine Control Module
(ECM) pin 33 about short circuit or
open with bad contact
35
Fuel pump relay short
circuit to ground or open
When short circuit to ground
or open
open with bad contact
D
Inspection the fuel pump relay
D
Inspection the ECM
Circuit Description
When the ignition switch is turned ON, the ECM will activate the pump relay and run the in--tank fuel pump. The fuel
pump will operate as long as the engine is cranking or running and the ECM is receiving ignition reference pulses.
If there are no reference pulses, the ECM will shut off the fuel pump within 2 seconds after the ignition switch is turned
ON, engine stopped or engine stalled.
Fuel Pump Relay Inspection
Measure the voltage between the ECM terminal No. 33 and Ground.
Ignition Switch : ON
0 v (for 1 ~ 2 sec.)
Cranking
0 v
1F1 -- 44 M162 ENGINE CONTROLS
DAEWOO MY_2000
Measure the Fuel Delivery from the Fuel Pump
1. Disconnect the return pipe from fuel distributor and insert the appropriate hose into it.
2. Place the hose end into the beaker with the minimum capacity of 1 Liter
3. Turn the ignition switch to “ON” position.
4. Connect the terminal No. 33 and No. 5 of ECM with a service wire.
5. Measure the fuel delivery from the fuel pump
Specified Value
1 Liter/max. 35 sec.
Notice: Check the fuel filter and fuel line when the fuel delivery is not within specified value.
Measure the Current Consumption of Fuel Pump
1. Remove the fuel pump relay from fuse and relay box in trunk, and turn the ignition switch to “ON” position.
2. Using a multimeter, measure the current consumption by connecting the terminal No. 30 and No. 87 of the fuel
pump relay connector.
Specified Value
5 ~ 9 A
Notice: Replace the fuel pump relay if the measured value is over 9 A.
M162 ENGINE CONTROLS 1F1 -- 45
DAEWOO MY_2000
BLANK
1F1 -- 46 M162 ENGINE CONTROLS
DAEWOO MY_2000
FUEL INJECTOR
YAA1F400
The Multipoint Fuel Injection (MFI) assembly is a solenoid--operated device controlled by the Engine Control Module
(ECM) that meters pressurized fuel to an each individual cylinder. The injector sprays the fuel, in precise quantities at a
point in time determined by the ECM, directly toward the cylinder intake valve. ECM energizes the fuel injector solenoid
to lift the needle valve and to flow the fuel through the orifice. This injector’s discharge orifice is calibrated to meet the
effective fuel atomization necessary for both ensuring the maximum homogeneity in the air--fuel mixture and holding
the condensation along the walls of the intake tract to a minimum.
Fuel enters the top feed injector from above and flows through its vertical axis. The lower end extends into the intake
valve. Fuel from the tip is directed at the intake valve, causing it to become further atomized and vaporized before
entering the combustion chamber.
A fuel injector which is stuck partially open would cause a loss of fuel pressure after the engine is shut down. Also, an
extended crank time would be noticed on some engines. Dieseling could also occur because some fuel could be deliv-
ered to the engine after the ignition is turned off.
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