Daewoo CIELO EURO III Manual page 225

Step
1. Turn the ignition OFF for 10 seconds.
2. Turn the ignition ON.
1
3. Listen for in-tank fuel pump operation.
Does the fuel pump operate for the time specified?
1. Turn the ignition OFF.
2. Disconnect the fuel pump relay.
3. Connect a test light between the fuel pump relay
2
connector terminal 30 and ground.
4. Turn the ignition ON.
Is the test light on?
1. Turn the ignition OFF.
2. Connect a test light between the fuel pump relay
connector terminal 86 and battery positive.
3 3. Turn the ignition ON.
4. With the ignition ON, the test light should light for
the time specified.
Is the test light on?
1. Turn the ignition OFF.
2. Connect a test light between the fuel pump relay
4
connector terminal 30 and ground.
Is the test light on?
Check for an open or short to ground in the wire
between the fuel pump relay connector terminal 87
5
and the fuel pump connector terminal 3.
Is the problem found?
1. Repair the wire between the fuel pump relay
connector terminal 87 and the fuel pump
connector terminal 3.
2. Install the fuel pump relay.
6
3. Turn the ignition OFF for 10 seconds.
4. Turn the ignition ON.
Does the fuel pump operate for the time specified?
1. Replace the fuel pump relay.
2. Turn the ignition OFF for 10 seconds.
7
3. Turn the ignition ON.
Does the fuel pump operate for the time specified?
Check for an open wire between the fuel pump relay
connector terminal 30 and the battery.
8
Is the problem found?
Check for an open wire between the fuel pump relay
connector terminal 86 to the engine control
module (ECM)connector terminal K54.
9
Is the problem found?
DAEWOO T-154 BL2,3
Fuel Pump Relay Circuit Check
Action
ENGINE CONTROLS 1F – 57
Value(s) Yes
2 sec System OK
–
Go to Step 3
2 sec Go to Step 4
–
Go to Step 5
–
Go to Step 6
2 sec System OK
2 sec System OK
–
Go to Step 13
–
Go to Step 10
No
Go to Step 2
Go to Step 8
Go to Step 9
Go to Step 11
Go to Step 7
–
–
–
Go to Step 12