Dtc P0300 Multiple Cylinder Misfire - Daewoo CIELO EURO III Manual

Step
Perform an On-Board Diagnostic (EOBD) System
Check.
1
Is the system check complete?
Install a scan tool.
2
Are Diagnostic Trouble Codes (DTCs) P0201,
P0202, P0203, P0204 set?
1. Perform a visual/physical inspection.
3 2. Make any repairs that are necessary.
Were any repairs necessary?
Start the engine and allow it to idle.
4
Are any Misfire Current counters incrementing?
Are all counters equal (within a percentage of each
5
other)?
1. Turn the ignition ON, engine OFF and review the
Freeze Frame data and note the parameters.
2. Operate the vehicle within the Freeze Frame
6
conditions and conditions for setting this DTC as
noted.
Are any Misfire Current counters incrementing?
1. Turn the engine OFF.
2. Install a fuel pressure gauge.
7
3. Observe the fuel pressure with the engine
running.
Is the fuel pressure within the specified value?
Check the fuel for contamination.
8
Is the fuel OK?
Check for a basic engine problem.
9
Is the action complete?
Replace the contaminated fuel.
10
Is the action complete?
1. Turn the engine OFF.
2. Disconnect the fuel injector harness connector.
3. Install a spark tester on cylinder #1 spark plug
cable.
11
4. Crank the engine and check for spark.
5. Repeat the above procedure on cylinders #2, #3,
#4.
Is spark observed on all four spark plug cables?
Replace all malfunctioning spark plugs.
12
Are any malfunctioning?
1. Turn the engine OFF.
2. Disconnect the 4 fuel injector connectors from the
injectors.
3. Install an injector test light on the injector harness
13
connector for the cylinders that had misfired.
4. Crank the engine and note the test light.
Does the injector test light blink?
Perform the Fuel Injector Balance Test.
14
Are the fuel injectors OK?
DAEWOO T-154 BL2,3

DTC P0300 Multiple Cylinder Misfire

Action
ENGINE CONTROLS 1F – 218
Value Yes
–
Go to Step 2
– Go to applicable
DTC
–
Go to Step 27
– Go to Step 5
– Go to Step 7
–
Go to Step 5
284-325 kPa
Go to Step 8
(41 to 47 psi)
– Go to Step 9
– Go to Step 27
– Go to Step 27
–
Go to Step 12
– Go to Step 27
–
Go to Step 14
– Go to Step 9
No
Go to "On-
Board Diag-
nostic System
Check"
Go to Step 3
Go to Step 4
Go to Step 6
Go to Step 11
Go to "Diag-
nostic Aids"
Go to "Fuel
System Diag-
nosis"
Go to Step 10
–
–
Go to Step 20
Go to Step 13
Go to Step 15
Go to Step 16