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- Refer to Code No. P0150: Left bank oxygen sensor (front) circuit
.
- Refer to Code No. P0202: No. 2 injector system
.
- Refer to Code No. P0204: No. 4 injector system
.
- Refer to Code No. P0206: No. 6 injector system
.
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- The engine-ECU <M/T> or engine-A/T-ECU <A/T>
effects air/fuel ratio feedback control in accordance with the signals
from the left bank oxygen
sensor (front).
- If the left bank oxygen sensor (front) has deteriorated, corrections
will be made
by the left bank oxygen sensor (rear).
- Code No. P0154 becomes stored in memory if a failure is detected in
the above air/fuel
ratio feedback control system.
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Check Conditions
- 20 seconds or more have passed since the engine starting sequence was
completed.
- Engine coolant temperature is 76°C or more.
- Engine speed is higher than 1,200 r/min.
- Volumetric efficiency is 30 % or more.
- Throttle position sensor output voltage is 4 V or less.
- Except while fuel is being shut off.
- Monitoring time: 30 seconds.
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Judgment Criterion
- Left bank oxygen sensor (front) output voltage does not get across
approximately
0.5 V within about 30 seconds.
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- Failed left bank oxygen sensor (front)
- Exhaust leak
- Incorrect fuel pressure
- Failed engine-ECU <M/T> or engine-A/T-ECU
<A/T>
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- Refer to Data List Reference Table
.
- Item AE: Left bank oxygen sensor (front)
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Q.
Is the check result normal?
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Intermittent malfunction (Refer to
GROUP 00 - How to Use Troubleshooting/Inspection
Service Points - How to Cope with Intermittent Malfunctions ).
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Q.
Is the check result normal?
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Q.
Is the check result normal?
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Q.
Is the check result normal?
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Repair
or replace the connector.
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Q.
Is the check result normal?
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Replace the left bank oxygen sensor
(front).
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Q.
Is the check result normal?
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Repair
or replace the connector.
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- Measure the resistance between terminal No. 8 and
No. 7 when measuring No. 2 cylinder.
- Measure the resistance between terminal No. 9 and No. 7 when
measuring No. 4 cylinder.
- Measure the resistance between terminal No. 10 and No. 7 when
measuring No. 6 cylinder.
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Q.
Are the check results normal?
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- B-111 (No. 2 injector connector).
- B-105 (No. 4 injector connector).
- B-104 (No. 6 injector connector).
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Q.
Are the check results normal?
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Repair
or replace the connector.
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Check No. 2, No. 4 and No. 6 injector itself
(Refer to ![](../../../buttons/03btn007.png)
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Q.
Is the check result normal?
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![](../../../buttons/03btn001.png)
Check and repair
harness between injector intermediate
connector and injector connector.
- Check and repair harness between B-06 (terminal No.
8) injector intermediate connector and B-111 (terminal No. 2) No. 2
injector connector
- Check and repair harness between B-06 (terminal No. 9)
injector intermediate connector
and B-105 (terminal No. 2) No. 4 injector connector
- Check and repair harness between B-06 (terminal No. 10)
injector intermediate connector
and B-104 (terminal No. 2) No. 6 injector connector
- Check output line for damage.
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Q.
Is the check result normal?
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Repair
or replace the connector.
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- Check output line for damage.
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Q.
Is the check result normal?
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Repair
the damaged harness wire.
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- Check and repair harness between B-111 (terminal
No. 2) No. 2 injector connector and D-243 (terminal No. 5) engine-ECU
<M/T> connector or
D-212 (terminal No. 5) engine-A/T-ECU <A/T> connector.
- Check and repair harness between B-105 (terminal No. 2) No. 4
injector connector
and D-243 (terminal No. 21) engine-ECU <M/T> connector or D-212
(terminal No. 21) engine-A/T-ECU <A/T>
connector.
- Check and repair harness between B-104 (terminal No. 2) No. 6
injector connector
and D-243 (terminal No. 6) engine-ECU <M/T> connector or D-212
(terminal No. 6) engine-A/T-ECU <A/T>
connector.
- Check output line for damage.
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Q.
Is the check result normal?
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Repair
the damaged harness wire.
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- Fuel pressure measurement (Refer to Fuel Pressure Test
).
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Q.
Is the check result normal?
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Replace the engine-ECU <M/T>
or engine-A/T-ECU <A/T>.
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