1F–28 ENGINE CONTROLS
DAEWOO M-150 BL2
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
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