Daewoo MATIZ Service Manual page 382

1F – 284 ENGINE CONTROLS
Step
1. Check the fuel injector driver circuit.
2. Disconnect all of the fuel injector harness
connectors at the fuel injectors.
10 3. Connect an injector test light between the
harness terminals of each fuel injector connector.
4. Note the test light while cranking the engine.
Does the test light blink at all connectors?
Check the fuel injector driver wiring harness, the
connectors, and the connector terminals for the
11
proper connections.
Is the problem found?
Repair the wiring harness, the connector, or the
connector terminal as needed.
12
Is the repair complete?
Measure the resistance of each fuel injector.
Is the fuel injector resistance within the value
13 specified at 20_C (68_F)
Note: The resistance will increase slightly at higher
temperatures)?
Replace any fuel injector with a resistance that is out
of specifications.
14
Is the repair complete?
Perform an injector diagnosis.
15
Is the problem found?
Replace any restricted or leaking fuel injectors as
needed.
16
Is the repair complete?
1. Check for the proper ignition voltage output for
each cylinder with a spark tester.
2. Inspect the spark plugs for cracks, wear, improper
gap, burned electrodes, or heavy deposits.
3. Inspect the ignition wires for short conditions.
17
4. Inspect all of the ignition grounds for loose
connections.
5. Inspect the Engine Control Module (ECM) for the
proper operation.
Is the problem found?
Correct or replace any faulty ignition components.
18
Is the repair complete?
Does the engine misfire or cut out under load or at
19
idle?
20 Does the engine start, but then immediately stall?
1. Remove the Crankshaft Position (CKP) sensor.
2. Inspect for faulty connections and repair as
21
needed.
Is the problem found?
Repair the faulty connections as needed.
22
Is the repair complete?
Hard Start (Cont'd)
Action Value(s) Yes
–
Go to Step 13
–
Go to Step 12
–
System OK
11.6–12.4 Ω
Go to Step 15
–
System OK
–
Go to Step 16
–
System OK
–
Go to Step 18
–
System OK
Go to "Ignition
–
System Check"
– Go to Step 21
–
Go to Step 22
–
System OK
No
Go to Step 11
Go to Step 28
–
Go to Step 14
–
Go to Step 17
–
Go to Step 19
–
Go to Step 20
Go to Step 23
Go to Step 25
–
DAEWOO M-150 BL2