Daewoo MATIZ Service Manual page 125

Step
1. Check for any damages or poor connection in
ignition wires and repair as needed.
2. Connect the Ei system ignition coil connector and
ECM connector.
21
3. Check for the presence of spark from all of the
ignition wires.
Is the spark present from all of the ignition wires?
Replace ECM
22
Is the repair complete?
1. Turn the ignition OFF.
2. Connect a fuel pressure gauge.
23
3. Crank the engine.
Is any fuel pressure present?
1. Turn the ignition OFF.
2. Disconnect the electrical connector at the fuel
pump.
3. Connect a test light between the fuel pump
terminals 2 and 3.
24
4. Turn the ignition ON.
5. With the ignition ON, the test light should light for
the time specified.
Is the test light on?
Replace the fuel pump.
25
Is the repair complete?
Is the fuel pressure within the value specified?
26
Check the fuel for contamination.
27
Is the fuel contaminated?
1. Remove the contaminated fuel from the fuel tank.
28 2. Clean the fuel tank as needed.
Is the repair complete?
1. Check the fuel filter for restriction.
2. Inspect the fuel lines for kinks and restrictions.
29 3. Repair or replace as needed.
4. Measure the fuel pressure.
Is the fuel pressure within the value specified?
1. Disconnect vacuum line from the fuel pressure
regulator.
2. Inspect the vacuum line for the presence of fuel.
30
3. Inspect the fuel pressure regulator vacuum port
for the presence of fuel.
Is any fuel present?
Replace the fuel pressure regulator.
31
Is the repair complete?
1. Remove the fuel pump assembly from the fuel
tank.
2. Inspect the fuel pump sender and the fuel
32
coupling hoses for a restriction.
3. Inspect the in-tank fuel filter for restriction.
Is the problem found?
DAEWOO M-150 BL2
Engine Cranks But Will Not Run (Cont'd)
Action
ENGINE CONTROLS 1F – 27
Value(s) Yes
–
Go to Step 2
–
Go to Step 2
–
Go to Step 26
2 sec. Go to Step 25
–
Go to Step 2
380 kPa
(55 psi) Go to Step 27
–
Go to Step 28
–
Go to Step 2
380 kPa
(55 psi)
Go to Step 2
–
Go to Step 31
–
Go to Step 2
–
Go to Step 33
No
Go to Step 22
–
Go to Step 24
Go to Step 32
–
Go to Step 29
Go to Step 41
–
Go to Step 30
Go to Step 32
–
Go to Step 25