Dtc P0304 Cylinder 4 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) P0204 or
P0300 set?
1. Perform a visual/physical inspection.
3
2. Make any repairs that are necessary.
Are 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.
2. Review the Freeze Frame data and note the
parameters.
6
3. Operate the vehicle within the Freeze Frame
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 #4 spark plug
11
cable.
4. Crank the engine and check for spark.
Is spark observed on all four spark plug cables?
Replace the malfunctioning spark plug.
12
Are any malfunctioning?
1. Turn the engine OFF.
2. Disconnect the cylinder 4 fuel injector connector
from the injector.
3. Install an injector test light on the injector harness
13
connector, terminal 2 for the cylinder 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
Is the fuel injector OK?
DAEWOO T-154 BL2,3

DTC P0304 Cylinder 4 Misfire

Action
ENGINE CONTROLS 1F – 241
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
(41-47 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
Diagnostic
System Check"
Go to Step 3
Go to Step 4
Go to Step 6
Go to Step 11
Go to
"Diagnostic
Aids"
Go to "Fuel
System
Diagnosis"
Go to Step 10
–
–
Go to Step 20
Go to Step 13
Go to Step 15
Go to Step 16