Daewoo MATIZ Service Manual page 313

D The EVAP system in unable to achieve or maintain
vacuum during the diagnostic test. The amount of
decay will vary within the fuel level.
Action Taken When the DTC Sets
D The Malfunction Indicator Lamp (MIL) will illuminate.
D The ECM will record operating conditions at the time
the diagnostic fails. This information will be stored in
the Freeze Frame and Failure Records buffers.
D A history DTC is stored.
D Coolant fan turns ON.
Conditions for Clearing the MIL/DTC
D The MIL will turn off after four consecutive ignition
cycles in which the diagnostic runs without a fault.
D A history DTC will clear after 40 consecutive warm-up
cycles without a fault.
D DTC(s) can be cleared by using the scan tool.
Diagnostic Aids
Although this DTC is considered a type. A diagnostic, it
acts like a type B diagnostic under certain conditions.
Whenever this diagnostic reports the system has
passed, or if the battery is disconnected, the diagnostic
must fail twice before setting a DTC. The initial failure is
not reported to the diagnostic executive or displayed on
Step
Perform an Euro On-Board Diagnostic (EOBD)
System Check.
1
Is the system check complete?
1. Disconnect the evaporative emission (EVAP)
canister purge valve connector.
2. Measure the resistance of the EVAP canister
2
purge valve connector.
Does the resistance measure near within the value
specified?
Connect a test light between EVAP canister purge
valve connector terminal 2 and ground.
3
Is the test light ON?
1. Disconnect the ECM connector.
2. Connect a test light between the ECM connector
4
terminal 66 and ground.
Is the test light ON?
DAEWOO M-150 BL2
DTC P0445 – EVAP Purge Control Circuit Fault
Action
ENGINE CONTROLS 1F – 215
a scan tool. A passing system always reports to the
diagnostic executive immediately.
Check for the following conditions :
Missing or damaged fuel cap.
Missing or damaged O-rings at fuel vapor and EVAP
purge line canister fittings.
Cracked or punctured EVAP canister.
Damaged source vacuum line, EVAP purge line, EVAP
vent hose or fuel tank vapor line.
Poor connection at the ECM. Inspect the harness con-
nectors for the following conditions.
D Backed-out terminals.
D Improper mating.
D Broken locks.
D Improperly formed.
D Damaged terminals.
D Poor terminal-to-wire connection.
D Damaged harness. Inspect the wiring harness to the
EVAP vent solenoid, EVAP canister purge valve, and
the fuel tank pressure sensor for an intermittent open
or short circuit.
D Kinked, pinched or plugged vacuum source, EVAP
purge, or fuel tank vapor line. Verify that the lines are
not restricted.
Value(s)
–
Go to Step 2
30Ω Go to Step 3
–
Go to Step 4
–
Go to Step 5
Yes No
Go to
"On-Board
Diagnostic
System Check"
Go to Step 9
Go to Step 6
Go to Step 7