|
- Refer to Data List Reference Table
.
- Item 13: Intake air temperature
sensor
|
|
OK: At ambient
temperature (atmospheric temperature) or
equivalent.
|
|
Q.
Is the check result normal?
|
|
Intermittent
malfunction (Refer to GROUP 00 - How to Use
Troubleshooting/Inspection
Service Points ).
|
|
|
![](../../../img/13/AK300969AC00ENG.png)
|
Q.
Is the check result normal?
Go to Step 3
.
Repair or
replace.
|
|
- Check intake air temperature sensor itself (Refer to
).
|
|
Q.
Is the check result normal?
|
![](../../../img/13/AK300969AC00ENG.png)
|
- Disconnect connector, and measure at harness
side.
- Resistance between terminal No. 4 and
earth.
OK: 2 Ω or less
Q.
Is the check result normal?
Go to Step 8
.
Go to Step 5
.
|
![](../../../img/13/AK305616AB00ENG.png)
|
Q.
Is the check result normal?
Go to Step 6
.
Repair or
replace.
|
![](../../../img/13/AK300969AC00ENG.png)
![](../../../img/13/AK305616AB00ENG.png)
|
note |
Before checking harness, check
intermediate connector C-116, and repair if
necessary.
|
- Check earthing line for open circuit and
damage.
Q.
Is the check result normal?
Go to Step 7
.
Repair.
|
|
- Refer to Data List Reference Table
.
- Item No. 13: Intake air temperature
sensor
|
|
OK: At ambient
temperature (atmospheric temperature) or
equivalent.
|
|
Q.
Is the check result normal?
|
|
Intermittent
malfunction (Refer to GROUP 00 - How to Use
Troubleshooting/Inspection
Service Points ).
|
|
|
|
Replace engine-ECU
<M/T> or engine-A/T-ECU
<A/T>.
|
|
|
![](../../../img/13/AK300969AC00ENG.png)
|
- Disconnect connector, and measure at harness
side.
- Ignition switch: ON
- Voltage between terminal No. 1 and earth.
OK: 4.5 - 4.9 V
Q.
Is the check result normal?
Replace engine-ECU
<M/T> or engine-A/T-ECU
<A/T>.
Go to Step 9
.
|
![](../../../img/13/AK305616AB00ENG.png)
![](../../../img/13/AK300969AC00ENG.png)
|
- Measure engine-ECU <M/T> or
engine-A/T-ECU <A/T> terminal
voltage.
- Disconnect B-106 air flow sensor connector.
- Ignition switch: ON
- Voltage between terminal No. 99 and earth.
OK: 4.5 - 4.9 V
Q.
Is the check result normal?
Go to Step
10 .
Go to Step
11 .
|
![](../../../img/13/AK305616AB00ENG.png)
![](../../../img/13/AK300969AC00ENG.png)
|
Q.
Is the check result normal?
![](../../../buttons/03btn001.png)
Check
and repair harness between B-106 (terminal No.
1) air flow sensor connector and C-113 (terminal No. 99)
engine-ECU <M/T> connector
or engine-A/T-ECU <A/T>
connector.
- Check output line for open
circuit.
Repair or
replace.
|
![](../../../img/13/AK305616AB00ENG.png)
|
Q.
Is the check result normal?
Go to Step
12 .
Repair
or replace.
|
|
- Check output line for short circuit.
|
![](../../../img/13/AK300969AC00ENG.png)
![](../../../img/13/AK305616AB00ENG.png)
|
Q.
Is the check result normal?
Go to Step 7
.
Repair.
|
![](../../../img/13/AK300969AC00ENG.png)
|
- Use special tool test harness (MB991709) to connect
only terminal
No. 1 and No. 4, and then measure at pick-up
harness.
- Ignition switch: ON
- Voltage between terminal No. 4 and earth.
OK:
Ambient temperature at
-20°C: 3.8 - 4.4 V Ambient
temperature at 0°C: 3.2 - 3.8
V Ambient temperature at 20°C: 2.3 -
2.9 V Ambient temperature at 40°C: 1.5
- 2.1 V Ambient temperature at 60°C:
0.8 - 1.4 V Ambient temperature at
80°C: 0.4 - 1.0 V
Q.
Is the check result normal?
Go to Step 7
.
Go to Step
14 .
|
![](../../../img/13/AK305616AB00ENG.png)
|
Q.
Is the check result normal?
Go to Step
15 .
Repair
or replace.
|
![](../../../img/13/AK300969AC00ENG.png)
![](../../../img/13/AK305616AB00ENG.png)
|
- Check output line for damage.
Q.
Is the check result normal?
Go to Step 7
.
Repair.
|