Daewoo MATIZ Service Manual page 120

1F – 22 ENGINE CONTROLS
Step
Perform an Euro On-Board Diagnostic (EOBD)
System Check.
1
Is the check complete.
1. Turn the ignition OFF and disconnect the Engine
Control Module (ECM).
2. Turn the ignition ON and check the 5 volt
reference circuit for the following conditions:
D Poor connection at the ECM.
2
D Open between the ECM connector affected
sensors shorted to ground or voltage.
3. If a problem is found, locate and repair the open
or short circuit as necessary.
Is a problem found?
1. Check the sensor ground circuit for the following
conditions:
D Poor connection at the ECM or affected
sensors.
3
D Open between the ECM connector and the
affected sensors.
2. If a problem is found, repair it as necessary.
Is a problem found?
Measure the voltage of the Electric Exhaust Gas
Recirculation (EEGR) Pintle Position Sensor signal
4
circuit between ECM harness connector and ground.
Does the voltage measure near the specified value?
Measure the voltage of the Manifold Absolute
Pressure (MAP) sensor signal circuit between the
5
ECM harness connector and ground.
Does the voltage measure near the specified value?
Measure the voltage of the Throttle Position (TP)
sensor signal circuit between the ECM harness
6
connector and ground.
Does the voltage measure near the specified value?
Measure the voltage of the Intake Air Temperature
(IAT) sensor signal circuit between the ECM harness
7
connector and ground.
Does the voltage measure near the specified value?
Measure the voltage of the Engine Coolant
Temperature (ECT) sensor signal circuit between the
8
ECM harness connector and ground.
Does the voltage measure near the specified value?
1. Disconnect the EEGR valve.
2. Measure the voltage of the EEGR Pintle Position
9 sensor signal circuit between the ECM harness
connector and ground.
Does the voltage measure near the specified value?
Replace the EEGR valve.
10
Is the repair complete?
Locate and repair the short to voltage in the MAP
sensor signal circuit.
11
Is the repair complete?
Multiple ECM Information Sensor DTCs Set
Action Value(s) Yes
–
Go to Step 2
–
Go to Step 19
–
Go to Step 19
0 V Go to Step 5
0 V Go to Step 6
0 V Go to Step 7
0 V Go to Step 8
0 V Go to Step 16
0 V Go to Step 10
–
Go to Step 19
–
Go to Step 19
No
Go to "Euro
On-Board
Diagnostic
System Check"
Go to Step 3
Go to Step 4
Go to Step 9
Go to Step 11
Go to Step 12
Go to Step 13
Go to Step 14
Go to Step 15
–
–
DAEWOO M-150 BL2