Daewoo MATIZ User Manual

1F–140 ENGINE CONTROLS
DAEWOO M-150 BL2
DTC P0300 – Multiple Cylinder Misfire (Cont’d)
Step Action Value(s) Yes No
3
Perform a visual/physical inspection.
Make any repairs that are necessary.
Is the repair complete?
–
Go to Step 27 Go to Step 4
4
Start the engine and allow it to idle.
Are any Misfire Current counters incrementing?
–
Go to Step 5 Go to Step 6
5
Are all counters equal (within a percentage of each
other)?
–
Go to Step 7 Go to Step 11
6
1. Turn the ignition ON, with the engine OFF.
2. Review the Freeze Frame data, and note the
parameters.
3. Operate the vehicle within the Freeze Frame
conditions and conditions for setting this DTC as
noted.
Are any Misfire Current counters incrementing?
–
Go to Step 5
Go to
“Diagnostic
Aids”
7
1. Turn the engine OFF.
2. Install a fuel pressure gauge to the fuel rail.
3. Observe the fuel pressure with the engine
running.
Is the fuel pressure within the specified value?
284–325 kPa
(41–47 psi)
Go to Step 8
Go to
“Fuel System
Diagnosis”
8
Check the fuel for contamination.
Is the fuel OK?
–
Go to Step 9 Go to Step 10
9
Check for a basic engine problem and repair as
necessary.
Is the repair complete?
–
Go to Step 27
–
10
Replace the contaminated fuel.
Is the repair complete?
–
Go to Step 27
–
11
1. Turn the engine OFF.
2. Disconnect the fuel injector harness connector.
3. Install a spark tester on cylinder #1 spark plug
cable.
4. Crank the engine and check for spark.
5. Repeat the above procedure on cylinders #2, #3.
Is a spark observed on all four spark plug cables?
–
Go to Step 12 Go to Step 20
12
Replace any malfunctioning spark plugs if
necessary.
Is the repair complete?
–
Go to Step 27 Go to Step 13
13
1. Turn the engine OFF.
2. Disconnect the fuel injector connectors from the
injectors.
3. Install an injector test light on the injector harness
connector for the cylinders that had misfired.
4. Crank the engine and note the test light.
Does the injector test light blink?
–
Go to Step 14 Go to Step 15
14
Perform the Fuel Injector Balance Test.
Are the fuel injectors OK?
–
Go to Step 9 Go to Step 16
15
1. Disconnect the injector test light.
2. With a test light connected to ground, probe the
ignition feed terminal 1 of the injector harness
connector for each cylinder that had misfire.
3. Crank the engine.
Does the test light illuminate?
–
Go to Step 17 Go to Step 19

Daewoo MATIZ Specifications

General

Brand	Daewoo
Model	MATIZ
Category	Automobile
Language	English