Daewoo MATIZ Service Manual page 287

repairs, the valve warms and the problem disappears.
By watching the Actual EEGR and desired EEGR posi-
tions on a cold vehicle with a scan tool, the fault can be
DTC P1403 – Electric Exhaust Gas Recirculation Valve Failure
Step
Perform an Euro On-Board Diagnostic (EOBD)
System Check.
1
Is the system check complete?
1. Turn the ignition switch to with the engine OFF.
2. Install the scan tool.
3. Command the electric exhaust gas recirculation
2
(EEGR) valve to the specified values.
Does the Actual EEGR Position follow the desired
EEGR position?
1. Turn the ignition switch to ON.
2. Disconnect the EEGR valve electrical connector.
3
3. With a test light connected to B+, probe the
ground circuit to the EEGR valve.
Does the test light illuminate?
1. Connect the test light to ground.
2. Probe the EEGR control circuit at terminal 1 to
the EEGR valve.
4
3. Command the EEGR valve to the specified
values using a scan tool.
After the command is raised, does the test light glow
brighter, flash or maintain a steady glow?
Repair the open or poor connection in the EEGR
ground circuit.
5
Is the repair complete?
With a test light still connected to ground, probe the
signal circuit at terminal 1.
6
Does the test light illuminate?
With a test light still connected to ground, again
probe the signal circuit without commanding the
7
EEGR valve with the scan tool.
Does the test light illuminate?
Check the signal circuit for a short to voltage and
repair as necessary.
8
Is a repair necessary?
With a digital voltmeter (DVM) connected to ground,
probe the 5V reference circuit at terminal 3.
9
Is the voltage measured near the specified value?
Check the control circuit for a short to battery
voltage and repair as necessary.
10
Is a repair necessary?
Connect the test light to B+ and again probe the
control circuit at terminal 4.
11
Does the test light illuminate?
Replace the engine control module (ECM).
12
Is the replacement complete?
DAEWOO M-150 BL2
Action
ENGINE CONTROLS 1F – 189
easily verified. Check the Freeze Frame data to deter-
mine if the DTC set when the vehicle was cold by view-
ing the Engine Coolant Temperature (ECT).
Value(s)
–
Go to Step 2
25%, 50%,
75%, 100% Go to Step 19
–
Go to Step 4
25%, 50%,
75%, 100% Go to Step 6
–
Go to Step 19
–
Go to Step 8
–
Go to Step 10
–
Go to Step 19
5V Go to Step 13
–
Go to Step 19
–
Go to Step 15
–
Go to Step 19
Yes No
Go to
"On-Board
Diagnostic
System Check"
Go to Step 3
Go to Step 5
Go to Step 7
–
Go to Step 9
Go to Step 11
Go to Step 12
Go to Step 14
Go to Step 12
Go to Step 16
–