Daewoo CIELO EURO III Manual page 326

1F – 157 ENGINE CONTROLS
DTC P0133 Oxygen Sensor (O2S 1) Slow Response (Cont'd)
Step
Check the exhaust manifold/catalytic converter for a
leak and repair as necessary.
5
Is the repair complete?
Visually/physically inspect for the following items:
Oxygen Sensor (O2S 1) is securely installed.
Corrosion on the terminals.
Terminal tension (at the
6
Engine Control Module [ECM] and the
O2S 1).
O2S 1 wiring harness for poor terminal
connection or damaged wiring.
Is a problem found in any of the above areas?
1. Turn the ignition OFF.
2. Disconnect the O2S 1 electrical connector.
3. Jumper the O2S 1 low circuit, terminal 1 to
ground.
7
4. Start the engine.
Does the scan tool indicate the voltage between the
specified value?
1. Jumper the O2S 1 signal and low circuits
terminals 1 and 2 to ground.
8
Does the scan tool indicate the voltage below the
specified value?
Repair the condition as necessary.
9
Is the repair complete?
1. Turn the ignition OFF.
2. Disconnect the ECM
engine connector.
10
3. Check the O2S 1 low circuit for an open or poor
connection and repair as necessary.
Is the repair complete?
Check the ECM terminal M12 for a poor
connection and repair as necessary.
11
Is the repair complete?
Check the O2S 1 signal circuit for an open or a short
to ground and repair as necessary.
12
Is the repair complete?
Check the ECM terminal M29 for a poor
connection and repair as necessary.
13
Is the repair complete?
1. Turn the ignition OFF.
14 2. Replace the ECM.
Is the repair complete?
1. Turn the ignition OFF.
15 2. Replace the O2S 1.
Is the repair complete?
Action Value(s) Yes
–
Go to Step 16
–
Go to Step 9
400 – 500 mv Go to Step 8
200 mv Go to Step 15
–
Go to Step 16
–
Go to Step 16
–
Go to Step 16
–
Go to Step 16
–
Go to Step 16
–
Go to Step 16
–
Go to Step 16
No
Go to Step 6
Go to Step 7
Go to Step 10
Go to Step 13
–
Go to Step 11
Go to Step 14
Go to Step 13
Go to Step 14
–
–
DAEWOO T-154 BL2,3