1F–284 ENGINE CONTROLS
DAEWOO M-150 BL2
Hard Start (Cont’d)
Step Action Value(s) Yes No
10
1. Check the fuel injector driver circuit.
2. Disconnect all of the fuel injector harness
connectors at the fuel injectors.
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?
–
Go to Step 13 Go to Step 11
11
Check the fuel injector driver wiring harness, the
connectors, and the connector terminals for the
proper connections.
Is the problem found?
–
Go to Step 12 Go to Step 28
12
Repair the wiring harness, the connector, or the
connector terminal as needed.
Is the repair complete?
–
System OK
–
13
Measure the resistance of each fuel injector.
Is the fuel injector resistance within the value
specified at 20_C (68_F)
Note: The resistance will increase slightly at higher
temperatures)?
11.6–12.4 Ω Go to Step 15 Go to Step 14
14
Replace any fuel injector with a resistance that is out
of specifications.
Is the repair complete?
–
System OK
–
15
Perform an injector diagnosis.
Is the problem found?
–
Go to Step 16 Go to Step 17
16
Replace any restricted or leaking fuel injectors as
needed.
Is the repair complete?
–
System OK
–
17
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.
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?
–
Go to Step 18 Go to Step 19
18
Correct or replace any faulty ignition components.
Is the repair complete?
–
System OK
–
19
Does the engine misfire or cut out under load or at
idle?
–
Go to “Ignition
System Check” Go to Step 20
20 Does the engine start, but then immediately stall? – Go to Step 21 Go to Step 23
21
1. Remove the Crankshaft Position (CKP) sensor.
2. Inspect for faulty connections and repair as
needed.
Is the problem found?
–
Go to Step 22 Go to Step 25
22
Repair the faulty connections as needed.
Is the repair complete?
–
System OK
–
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