ENGINE CONTROLS 1F–189
DAEWOO M-150 BL2
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
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).
DTC P1403 – Electric Exhaust Gas Recirculation Valve Failure
Step Action Value(s) Yes No
1
Perform an Euro On-Board Diagnostic (EOBD)
System Check.
Is the system check complete?
–
Go to Step 2
Go to
“On-Board
Diagnostic
System Check”
2
1. Turn the ignition switch to with the engine OFF.
2. Install the scan tool.
3. Command the electric exhaust gas recirculation
(EEGR) valve to the specified values.
Does the Actual EEGR Position follow the desired
EEGR position?
25%, 50%,
75%, 100% Go to Step 19 Go to Step 3
3
1. Turn the ignition switch to ON.
2. Disconnect the EEGR valve electrical connector.
3. With a test light connected to B+, probe the
ground circuit to the EEGR valve.
Does the test light illuminate?
–
Go to Step 4 Go to Step 5
4
1. Connect the test light to ground.
2. Probe the EEGR control circuit at terminal 1 to
the EEGR valve.
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?
25%, 50%,
75%, 100% Go to Step 6 Go to Step 7
5
Repair the open or poor connection in the EEGR
ground circuit.
Is the repair complete?
–
Go to Step 19
–
6
With a test light still connected to ground, probe the
signal circuit at terminal 1.
Does the test light illuminate?
–
Go to Step 8 Go to Step 9
7
With a test light still connected to ground, again
probe the signal circuit without commanding the
EEGR valve with the scan tool.
Does the test light illuminate?
–
Go to Step 10 Go to Step 11
8
Check the signal circuit for a short to voltage and
repair as necessary.
Is a repair necessary?
–
Go to Step 19 Go to Step 12
9
With a digital voltmeter (DVM) connected to ground,
probe the 5V reference circuit at terminal 3.
Is the voltage measured near the specified value? 5V Go to Step 13 Go to Step 14
10
Check the control circuit for a short to battery
voltage and repair as necessary.
Is a repair necessary?
–
Go to Step 19 Go to Step 12
11
Connect the test light to B+ and again probe the
control circuit at terminal 4.
Does the test light illuminate?
–
Go to Step 15 Go to Step 16
12
Replace the engine control module (ECM).
Is the replacement complete?
–
Go to Step 19
–
To Next Page
Loading...
