|
- Refer to Data List Reference Table
.
- Item 59: Cylinder 1, 4 oxygen sensor
(rear)
|
|
Q.
Is the check result normal?
|
|
Intermittent
malfunction (Refer to GROUP 00 - How to Use
Troubleshooting/Inspection Service Points ).
|
|
|
![](../../../img/13/AK300975AC00ENG.png)
|
Q.
Is the check result normal?
Go to Step 3
.
Repair or
replace.
|
![](../../../img/13/AK300975AC00ENG.png)
|
- Disconnect connector, and measure at harness
side.
- Resistance between terminal No. 2 and
earth.
OK: 2 Ω or less
Q.
Is the check result normal?
Go to Step 7
.
Go to Step 4
.
|
![](../../../img/13/AK305833AB00ENG.png)
|
Q.
Is the check result normal?
Go to Step 5
.
Repair or
replace.
|
![](../../../img/13/AK300975AC00ENG.png)
![](../../../img/13/AK305833AB00ENG.png)
|
- Check earthing line for open circuit and
damage.
Q.
Is the check result normal?
Go to Step 6
.
Repair.
|
|
- Refer to Data List Reference Table
.
- Item 59: Cylinder 1, 4 oxygen sensor
(rear)
|
|
Q.
Is the check result normal?
|
|
Intermittent
malfunction (Refer to GROUP 00 - How to Use
Troubleshooting/Inspection Service Points ).
|
|
|
![](../../../img/13/AK300975AC00ENG.png)
|
- Use special tool test harness (MD998464) to connect
connector, and measure at pick-up harness.
- Engine: After warm-up
- Transmission: P range
- Voltage between terminal No. 4 and earth.
OK:
When the engine is 2,500
r/min, the output voltage should repeat 0.4 V or
less to 0.6 - 1.0 V
alternately
Q.
Is the check result normal?
Go to Step
10 .
Go to Step 8
.
|
|
- Check cylinder 1, 4 oxygen sensor (rear) itself
(Refer to
).
|
|
Q.
Is the check result normal?
|
|
Replace cylinder 1,
4 oxygen sensor (rear).
|
|
|
![](../../../img/13/AK305833AB00ENG.png)
![](../../../img/13/AK300975AC00ENG.png)
|
Q.
Is the check result normal?
![](../../../buttons/03btn001.png)
Check
and repair harness between B-23 (terminal No. 4)
cylinder 1, 4 oxygen sensor (rear) connector and C-113
(terminal No. 117) engine-A/T-ECU
connector.
- Check output line for damage.
Repair or
replace.
|
![](../../../img/13/AK305833AB00ENG.png)
|
- Measure engine-A/T-ECU terminal voltage.
- Transmission: P range
- Engine: After warm-up
- Voltage between terminal No. 117 and earth.
OK:
When the engine is 2,500
r/min, the output voltage should repeat 0.4 V or
less to 0.6 - 1.0 V
alternately.
Q.
Is the check result normal?
Go to Step
12 .
Go to Step
11 .
|
![](../../../img/13/AK305833AB00ENG.png)
![](../../../img/13/AK300975AC00ENG.png)
|
Q.
Is the check result normal?
![](../../../buttons/03btn001.png)
Check
and repair harness between B-23 (terminal No. 4)
cylinder 1, 4 oxygen sensor (rear) connector and C-113
(terminal No. 117) engine-A/T-ECU
connector.
- Check output line for open
circuit.
Repair or
replace.
|
![](../../../img/13/AK305833AB00ENG.png)
|
Q.
Is the check result normal?
![](../../../buttons/03btn001.png)
Repair or
replace.
|