Daewoo MATIZ Service Manual page 137

Step
1. Turn the ignition OFF.
2. Disconnect the engine fuse block fuse EF26.
3. Turn the ignition ON.
1
4. With a test light connected to the ground, probe
the fuse terminals nearest the main relay for fuse
EF19.
Is the light on at both terminal?
2 Is the light on at only one terminal?
Repair the open in the wiring between the main relay
connector terminal 30 and the fuse EF19 as needed.
3
Is the repair complete?
1. Turn the ignition OFF.
2. Remove the main relay.
3. Turn the ignition ON.
4
4. With a test light connected to the ground, probe
the main relay terminals 85 and 30.
Is the light on at both terminals.
1. Turn the ignition OFF.
5 2. Check engine fuse block fuse EF19.
Is one or both fuse blown?
1. Repair short circuit between terminal 87 of main
relay and heated oxygen sensor
6
2. Replace fuse EF19.
Is the repair complete?
Repair open circuit between terminal 30 of main
relay and fuse EF19.
7
Is the repair complete?
1. Turn the ignition OFF.
2. Measure the resistance between following
terminals.
8
D Terminal 86 of main relay and ground.
D Terminal 87 of main relay and ground.
Is the resistance within the specified value
Repair open circuit.
9
Is the repair complete?
Replace the main relay.
10
Is the repair complete?
DAEWOO M-150 BL2
Main Relay Circuit Check
Action
ENGINE CONTROLS 1F – 39
Value(s) Yes
–
System OK
– Go to Step 3
–
System OK
–
Go to Step 8
–
Go to Step 6
–
System OK
–
System OK
0 Ω
Go to Step 10
–
System OK
–
System OK
No
Go to Step 2
Go to Step 4
–
Go to Step 5
Go to Step 7
–
Go to Step 8
Go to Step 9
–
–