1F–248 ENGINE CONTROLS
DAEWOO M-150 BL2
DTC P0505 Idle Air Control Valve (IACV) Circuit Fault (Cont’d)
Step Action Value(s) Yes No
11
Inspect the IAC valve passages and repair as
needed.
Is the repair complete?
–
Go to Step 15 Go to Step 13
12
Check the test light.
Does the test light remain on constantly for the
terminals that did not blink?
–
Go to Step 9 Go to Step 7
13
1. Turn the ignition OFF.
2. Replace the IAC valve.
Is the repair complete?
–
Go to Step 15
–
14
1. Turn the ignition OFF.
2. Replace the ECM.
Is the repair complete?
–
Go to Step 15
–
15
1. Using the scan tool, clear the Diagnostic Trouble
Codes (DTCs).
2. Start the engine and idle at normal operating
temperature.
3. Operate the vehicle within the Conditions for
setting this DTC as specified in the supporting
text.
Does the scan tool indicate that this diagnostic has
run and passed?
–
Go to Step 16 Go to Step 2
16
Check if any additional DTCs are set.
Are any DTCs displayed that have not been
diagnosed?
–
Go to
Applicable DTC
Table System OK
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