Dtc P0131 Oxygen Sensor Low Voltage - Daewoo MATIZ Service Manual

Step
Perform an Euro On-Board Diagnostic (EOBD)
System Check.
1
Is the system check complete?
1. Connect the scan tool to the data link
connector(DLC).
2. Run the engine until it reaches operating
temperature.
2
3. Check for closed loop operation.
Does the engine control module(ECM) go into
closed loop?
1. Run the until until it reaches operating
temperature?
3 2. Run the engine at 1,200rpm.
Does the scan tool read the upstream oxygen(O
sensor signal voltage between the valve specified?
Does the scan tool read the Oxygen sensor signal
4 voltage fixed below the valve specified?
1. Disconnect the Oxygen sensor connector.
2. Run the warm engine at idle.
5
Does the scan tool read the Oxygen sensor signal
voltage between the valve specified?
1. Turn the ignition switch to LOCK.
2. Check the Oxygen sensor wire between the
6 Oxygen sensor and the ECM connector terminal
77 and 13 is open.
Is the problem found?
1. Turn the ignition switch to LOCK.
2. Check the Oxygen sensor wire between the
7
Oxygen sensor and the ECM connector terminal 77
for a short to ground.
Is the problem found?
1. Repair the wire or the connector terminal as
needed.
2. Clear the any DTCs from the ECM.
8
3. Road tests the vehicle.
4. Perform the diagnostic system check.
Is the repair complete?
1. Turn the ignition switch to LOCK.
2. Disconnect the Oxygen sensor connector.
9
3. Turn the ignition switch to ON.
Does the scan tool the Oxygen sensor signal voltage
between the valve specified?
1. Replace the Oxygen sensor.
2. Clear the DTCs from the ECM.
10
3. Perform the diagnostic system check.
Is the repair complete?
1. Replace the ECM.
11 2. Perform the diagnostic system check.
Is the repair complete?
DAEWOO M-150 BL2
DTC P0131 – Oxygen Sensor Low Voltage
Action
ENGINE CONTROLS 1F – 85
Value(s)
–
Go to Step 2
–
Go to Step 3
)
2
0.15~0.7V Go to Step 5
0.01V Go to Step 7
0.15~0.7V
–
Go to Step 8
–
Go to Step 8
–
0.15~0.7V Go to Step 11
–
–
Go to Step 12
Yes No
Go to
"On-Board
Diagnostic
System Check"
Go to Step 9
Go to Step 4
Go To
"Diagnostic
Aids"
Go To
"Diagnostic
Aids"
Go to Step 6
Go to Step 11
Go to Step 11
–
System OK
Go to Step 10
–
System OK
–