|
- Refer to Data List Reference Table .
- Item AC: Oxygen sensor
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|
Q.
Is the check result normal?
|
|
Intermittent malfunction (Refer to
GROUP 00 - How to Use Troubleshooting/Inspection
Service Points - How to Cope with Intermittent Malfunctions ).
|
|
|
|
Q.
Is the check result normal?
|
|
Repair
or replace the connector.
|
|
|
|
- Disconnect connector, and measure at harness side.
- Resistance between terminal No. 2 and earth.
|
|
OK: Continuity (2 Ω or
less)
|
|
Q.
Is the check result normal?
|
|
Q.
Is the check result normal?
|
|
Repair
or replace the connector.
|
|
|
|
- Check earthing line for open circuit.
|
|
Q.
Is the check result normal?
|
|
Repair
the damaged harness wire.
|
|
|
|
- Refer to Data List Reference Table .
- Item AC: Oxygen sensor
|
|
Q.
Is the check result normal?
|
|
Intermittent malfunction (Refer to
GROUP 00 - How to Use Troubleshooting/Inspection
Service Points - How to Cope with Intermittent Malfunctions ).
|
|
|
|
Replace the engine-ECU <M/T>
or engine-A/T-ECU <A/T>.
|
|
|
|
- Use special tool test harness (MB991316) to connect connector, and
measure
at pick-up harness.
- Engine: After warm-up
- Transmission: Neutral <M/T> or P range
<A/T>
- Voltage between terminal No. 4 and earth.
|
|
OK:
When the engine is
2,500 r/min, the output voltage should repeat 0 to 0.8 V
alternately.
|
|
Q.
Is the check result normal?
|
|
- Check oxygen sensor itself (Refer to ).
|
|
Q.
Is the check result normal?
|
|
Replace the oxygen sensor.
|
|
|
|
Q.
Is the check result normal?
|
|
Check intermediate
connector D-225, and repair
if necessary. If intermediate connector is normal, check and repair
harness between C-21 (terminal No.
4) oxygen sensor connector and D-246 (terminal No. 108) engine-ECU
<M/T> connector or D-217
(terminal No. 108) engine-A/T-ECU <A/T>
connector.
- Check output line for short circuit.
|
|
|
|
Repair
or replace the connector.
|
|
|
|
- Measure engine-ECU <M/T> or engine-A/T-ECU <A/T>
terminal voltage.
- Transmission: Neutral <M/T> or P range
<A/T>
- Engine: After warm-up
- Voltage between terminal No. 108 and earth.
|
|
OK:
When the engine is
2,500 r/min, the output voltage should repeat 0 to 0.8 V
alternately.
|
|
Q.
Is the check result normal?
|
|
Q.
Is the check result normal?
|
|
Check intermediate
connector D-225, and repair
if necessary. If intermediate connector is normal, check and repair
harness between C-21 (terminal No.
4) oxygen sensor connector and D-246 (terminal No. 108) engine-ECU
<M/T> connector or D-217
(terminal No. 108) engine-A/T-ECU <A/T>
connector.
- Check output line for open circuit.
|
|
|
|
Repair
or replace the connector.
|
|
|
|
Q.
Is the check result normal?
|
|
Repair
or replace the connector.
|
|
|