Daewoo Matiz (2003 year). Manual - part 29

1F – 26  ENGINE CONTROLS

Engine Cranks But Will Not Run (Cont’d)

Step

Action

Value(s)

Yes

No

12

Check for an open or short in the wires between
CKP sensor connector and ECM connector and
repair as need.
Is the repair complete?

–

Go to Step 2

–

13

1. Disconnect electronic Ignition (EI) system ignition

coil connector to prevent the vehicle from starting.

2. Measure the voltage at ECM connector terminal

24 and 54 by backprobing the ECM connector.

Are the voltage readings near the value specified?

0.4 V with

ignition ON,

2.0 V during

cranking

Go to Step 15

Go to Step 14

14

Replace the CKP sensor.
Is the repair complete?

–

Go to Step 2

–

15

1. Turn the ignition OFF.
2. Disconnect the electrical connector at EI system

ignition coil.

3. Connect a test light between terminal 1 of the EI

system ignition coil connector and ground.

4. Turn the ignition ON.
Is the test light on?

–

Go to Step 17

Go to Step 16

16

Check for open in wire between the battery and EI
system ignition coil connector terminal 1 and repair
as needed.
Is the repair complete?

–

Go to Step 2

–

17

1. Turn the ignition OFF.
2. Disconnect ECM connector and EI system

ignition coil connector.

3. Measure the resistance between following

terminals:

D

Terminal 2 of ignition coil and terminal 1 of
ECM connector.

D

Terminal 3 of ignition coil and terminal 32 of
ECM connector.

D

Terminal 4 of ignition coil and terminal 31 of
ECM connector.

Are the resistance within the value specified?

0 

Ω

Go to Step 19

Go to Step 18

18

Check for open circuit and repair as needed.
Is the repair complete?

–

Go to Step 2

–

19

1. Measure the resistance between following

terminals:

D

Terminal 1 and 2 of ignition coil.

D

Terminal 3 and 4 of ignition coil.

Are the resistance within the value specified?
2. Remove the high tension cable.
3. Measure the resistance between second coil.

D

Between 1 and 4

D

Between 2 and 3

Are the resistance within the value specified?

0.9

Ω

5.3 k

Ω

Go to Step 21

Go to Step 20

20

Replace the EI system ignition coil.
Is the repair complete?

–

Go to Step 2

–

ENGINE CONTROLS  1F – 27

Engine Cranks But Will Not Run (Cont’d)

Step

Action

Value(s)

Yes

No

21

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.

3. Check for the presence of spark from all of the

ignition wires.

Is the spark present from all of the ignition wires?

–

Go to Step 2

Go to Step 22

22

Replace ECM
Is the repair complete?

–

Go to Step 2

–

23

1. Turn the ignition OFF.
2. Connect a fuel pressure gauge.
3. Crank the engine.
Is any fuel pressure present?

–

Go to Step 26

Go to Step 24

24

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.

4. Turn the ignition ON.
5. With the ignition ON, the test light should light for

the time specified.

Is the test light on?

2 sec.

Go to Step 25

Go to Step 32

25

Replace the fuel pump.
Is the repair complete?

–

Go to Step 2

–

26

Is the fuel pressure within the value specified?

380 kPa

(55 psi)

Go to Step 27

Go to Step 29

27

Check the fuel for contamination.
Is the fuel contaminated?

–

Go to Step 28

Go to Step 41

28

1. Remove the contaminated fuel from the fuel tank.
2. Clean the fuel tank as needed.
Is the repair complete?

–

Go to Step 2

–

29

1. Check the fuel filter for restriction.
2. Inspect the fuel lines for kinks and restrictions.
3. Repair or replace as needed.
4. Measure the fuel pressure.
Is the fuel pressure within the value specified?

380 kPa

(55 psi)

Go to Step 2

Go to Step 30

30

1. Disconnect vacuum line from the fuel pressure

regulator.

2. Inspect the vacuum line for the presence of fuel.
3. Inspect the fuel pressure regulator vacuum port

for the presence of fuel.

Is any fuel present?

–

Go to Step 31

Go to Step 32

31

Replace the fuel pressure regulator.
Is the repair complete?

–

Go to Step 2

–

32

1. Remove the fuel pump assembly from the fuel

tank.

2. Inspect the fuel pump sender and the fuel

coupling hoses for a restriction.

3. Inspect the in-tank fuel filter for restriction.
Is the problem found?

–

Go to Step 33

Go to Step 25

1F – 28  ENGINE CONTROLS

Engine Cranks But Will Not Run (Cont’d)

Step

Action

Value(s)

Yes

No

33

Replace the fuel pump sender, the in-tank fuel filter,
and/or the fuel coupling hoses as needed.
Is the repair complete?

–

Go to Step 2

–

34

1. Turn the ignition OFF.
2. Disconnect the electric connector at the fuel

pump.

3. Connect a test light between fuel pump connector

terminal 3 and ground.

4. Turn the ignition ON.
5. With the ignition ON, the test light should

illuminate for the time specified.

Is the test light on?

2 sec

Go to Step 35

Go to Step 36

35

Repair the open circuit between the fuel pump
connector terminal 2 and ground.
Is the repair complete?

–

Go to Step 2

–

36

1. Turn the ignition OFF.
2. Disconnect the fuel pump relay.
3. Turn the ignition ON.
4. Measure the voltage at terminal 30 and 85 of fuel

pump relay.

Is the voltage within the value specified?

11 – 14 V

Go to Step 38

Go to Step 37

37

Repair open or short circuit for power supply.
Is the repair complete?

–

Go to Step 2

–

38

1. Turn the ignition OFF.
2. Disconnect ECM connector.
3. Using an ohmmeter, measure the resistance

between following terminals.

D

Terminal 10 of ECM and terminal 85 of fuel
pump relay.

D

Terminal 87 of fuel pump relay and terminal 3
of fuel pump.

Does the resistance within the value specified?

0 

Ω

Go to Step 40

Go to Step 39

39

1. Check for open circuit and fuel cut–off switch.
2. Reset fuel cut-off switch or repair open circuit as

needed.

Is the repair complete?

–

Go to Step 2

–

40

Replace the fuel pump relay.
Is the repair complete?

–

Go to Step 2

–

41

1. Turn the ignition OFF.
2. Disconnect the fuel inject harness connectors

from all of the fuel injectors.

3. Turn the ignition ON.
4. Connect test light between fuel injector harness

connector 1 and ground.

5. Repeat step 4 for each of the remaining fuel

injectors.

Does the test light on at all of the fuel injectors?

–

Go to Step 42

Go to Step 45

ENGINE CONTROLS  1F – 29

Engine Cranks But Will Not Run (Cont’d)

Step

Action

Value(s)

Yes

No

42

1. Turn the ignition OFF.
2. Connect test light between fuel injector harness

connector 2 and battery positive.

3. Crank the engine.
4. Repeat step 2 and 3 for each of the remaining

fuel injectors.

Does the test light flash for all of the fuel injectors?

–

Go to Step 43

Go to Step 46

43

Measure the resistance of each fuel injectors.
Is the resistance within the value specified.
Note: the resistance will increase slightly at higher
temperature.

13.75–15.25

Ω

System OK

Go to Step 44

44

Replace any of the fuel injectors with a resistance
out of specification.
Is the repair complete?

–

Go to Step 2

–

45

1. Inspect the fuse EF19 in engine fuse block.
2. Check for an open between the circuit from

terminal 2 of the three fuel injectors and terminal
87 of main relay.

Is the problem found?

–

Go to Step 48

Go to “Main

Relay Circuit

Check”

46

Measure the resistance between following terminals.

D

Terminal 1 of injector 1 connector and terminal 30
of ECM connector.

D

Terminal 1 of injector 2 connector and terminal 58
of ECM connector.

D

Terminal 1 of injector 3 connector and terminal 89
of ECM connector.

Does the resistance within the specified value?

0 

Ω

Go to Step 49

Go to Step 47

47

Repair the open fuel injector harness wire(s).
Is the repair complete?

–

Go to Step 2

–

48

Replace the fuse or repair the wiring as needed.
Is the repair complete?

–

Go to Step 2

–

49

Replace the ECM.
Is the repair complete?

–

Go to Step 2

–