Daewoo MATIZ Service Manual page 141

Step
Perform an Euro On-Board Diagnostic (EOBD)
system check.
1
Was the check performed?
1. Turn the ignition OFF.
2. Remove Idle Air Control (IAC) valve.
2
3. Inspect the IAC passages for restrictions.
Is the problem found?
Clean the IAC passages.
3
Is the repair complete?
Measure the resistance between following terminals
of IAC valve.
D Terminal A and B
4
D Terminal C and D
Does the resistance equal to the value specified?
Replace the IAC valve.
5
Is the repair complete?
1. Disconnect the Engine control Module (ECM)
connector.
2. Check for an open or short in the wires between
following terminals.
D Terminal A of IAC valve connector and terminal
70 of ECM connector
D Terminal B of IAC valve connector and terminal
6
71 of ECM connector
D Terminal C of IAC valve connector and terminal
42 of ECM connector
D Terminal D of IAC valve connector and terminal
72 of ECM connector
Is the problem found?
Repair an open or short circuit as needed.
7
Is the repair complete?
Inspect the IAC connector terminals and the ECM
connector terminals.
8
Is the problem found?
Repair or replace the throttle body assembly and/or
ECM connector terminals as needed.
9
Is the repair complete?
Replace the ECM.
10
Is the repair complete?
DAEWOO M-150 BL2
Idle Air Control System Check
Action
ENGINE CONTROLS 1F – 43
Value(s) Yes
–
Go to Step 2
–
Go to Step 3
–
System OK
40–80 Ω
Go to Step 6
–
System OK
–
Go to Step 8
–
System OK
–
Go to Step 9
–
System OK
–
System OK
No
Go to "Euro
On-Board
Diagnostic
System Check"
Go to Step 4
–
Go to Step 5
–
Go to Step 7
–
Go to Step 10
–
–