SsangYong Korando II (1996-2006 year). Manual — part 54
M162 ENGINE CONTROLS 1F1 -- 51
DAEWOO MY_2000
KAB1F230
Failure
Code
Description
Trouble Area
Maintenance Hint
40
Purge control valve
short circuit to battery
When short circuit to power
source
D
Inspection the ECM pin 34 about short
circuit or open with bad contact
41
Purge control valve
short circuit to ground or
open
When short circuit to ground or
open
circuit or open with bad contact
D
Inspection the source power of valve
D
Inspection the purge control solenoid
vale
54
Purge control circuit
malfunction
When malfunction of purge
control : not work
vale
D
Inspection the ECM
Test
YAA1F460
1. Maintain the normal temperature and idling state by
operating the engine.
2. Connect the ECM terminal No. 11 and No. 34 and
check for normal operation through the output waves
using oscilloscope.
Notice: Test during purge control valve operation after
the minimum of 1 minute after the engine turned on.
3. Connect the ECM terminal No. 34 and No.10 and
check for current consumption during the ignition
switch ON.
Specified Value
0.3 ~ 0.5 A
4. Remove the line to canister and measure the pres-
sure with the vacuum pressure gauge.
Specified Value
> 500 mbar
(after approx. 1 min.)
purge control valve operates
at this time
Notice: Test while at normal temperature and at idling
state by operating the engine.
1F1 -- 52 M162 ENGINE CONTROLS
DAEWOO MY_2000
FUEL RAIL
YAA1F470
M162 ENGINE CONTROLS 1F1 -- 53
DAEWOO MY_2000
Fuel Pressure Test
Tools Required
103 589 00 21 00 Fuel Pressure Gauge
1. Turn the ignition switch to “OFF” position.
2. Remove the fuel pressure test connector.
KAA1F430
3. Connect the fuel pressure gauge to the fuel pressure test connector.
4. Test the fuel pressure at idling by operating the engine using the fuel pressure gauge 103 589 00 21 00.
Vacuum Hose Connected (bar)
3.2~3.6
Vacuum Hose Disconnected (bar)
3.7~4.2
5. Replace the pressure regulator diaphragm if out of the specification.
Internal Leakage Test
1. Connect the fuel pressure gauge 103 589 00 21 00 to
the fuel pressure test connector.
KAA1F420
2. Stop the engine for approximately 30 minutes and then check the fuel pressure changes.
Pressure change
Fuel pressure drops slowly
D
Fuel leakage at the injector
D
Faulty fuel pressure regulator’s diaphragm and O-ring
Fuel pressure drops rapidly
D
Faulty check valve in the fuel pump
3. If there is no change in fuel pressure and maintain the following pressure over 30minutes, it is normal.
Fuel pressure (bar)
≥ 2.5
1F1 -- 54 M162 ENGINE CONTROLS
DAEWOO MY_2000
FUEL PRESSURE REGULATOR
YAA1F480
Function of the Fuel Pressure Regulator
The fuel pressure regulator maintains the fuel pressure
in the fuel line with the pressure of 3.2 bars to 3.8 bars
according to the intake manifold pressure. This operat-
ing pressure cannot be changed, and the fuel injection
volume will be only determined by the injection time.
Over supplied fuel returns to the fuel tank through the
return line.
<Operating at full load>
There is no negative pressure applied to the spring
chamber (9) during the full load, and it is separated from
the fuel chamber (8) by the diaphragm (5).
When the fuel pressure goes up, the diaphragm forces
the compression spring (6) in the direction of compres-
sion . At this moment, the valve (3) sticks to the dia-
phragm by the fuel pressure, and the fuel return line (2)
opens. The fuel over supplied returns to the fuel tank
through the return line.
YAA1F490
2. Fuel return line
3. Valve
5. Diaphragm
6. Compression Spring
8. Fuel Chamber
9. Spring Chamber
A. Valves Closed
B. Valves Opened
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