1F – 46IENGINE CONTROLS
DAEWOO V–121 BL4
Step NoYesValue(s)Action
12 Replace the PCM/ECM.
Is the repair complete?
Go to Step 22
13 Repair the short to voltage in the MIL control circuit.
Is the repair complete?
Go to Step 22
14 Check for an open or a poor connection in the MIL
control circuit and repair as necessary.
Is the repair necessary?
Go to Step 22 Go to Step 17
15 With a test light still connected to the ground, probe
the ignition feed terminal F16.
Does the test light illuminate?
Go to Step 18 Go to Step 19
16 Repair the open battery feed circuit.
Is the repair complete?
Go to Step 22
17 Check for an open ignition feed circuit or fuse to the
MIL and repair as necessary.
Is the repair necessary?
Go to Step 22 Go to Step 20
18 Check for a poor connection in the battery feed ter-
minal A4 or the ignition feed terminal F16 and repair
as necessary.
Is the repair necessary?
Go to Step 22 Go to Step 21
19 Repair the open in the ignition feed circuit from termi-
nal F16.
Is the repair complete?
Go to Step 22
20 Replace the instrument panel cluster. Refer to Sec-
tion 9E, Instrumentation/Driver Information.
Is the repair complete?
Go to Step 22
21 Check for a faulty PCM/ECM ground connection at
the engine block or PCM/ECM connector and repair
as necessary.
Is the repair necessary?
Go to Step 22 Go to Step 12
22
1. Allow the engine to idle until normal operating
temperature is reached.
2. Check if any Diagnostic Trouble Codes (DTCs)
are set.
Are any DTCs displayed that have not been diag-
nosed?
Go to the appli-
cable DTC
table
System OK