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- Data list reference table (Refer to
).
- Item 10: Air flow sensor
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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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- Disconnect connector, and measure at harness side.
- Ignition switch: "ON"
- Voltage between terminal power supply line and body earth.
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Q.
Is the check result normal?
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![](../../../buttons/03btn002.png)
Repair or replace the connector, or check and repair harness between engine control relay connector terminal and air flow sensor connector terminal.
- Check power supply line for open/short circuit.
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- Use special tool test harness (MB991709) to connect connector, and measure at pick-up harness.
- Ignition switch: "ON"
- Voltage between terminal engine-ECU AFS5 line and body earth.
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Q.
Is the check result normal?
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- Measure engine-ECU connector terminal voltage.
- Ignition switch: "ON"
- Voltage between terminal AFS5 and body earth.
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Q.
Is the check result normal?
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![](../../../buttons/03btn002.png)
Repair or replace the connector, or check and repair harness between engine-ECU connector terminal AFS5 and air flow sensor connector terminal.
- Check power supply line for open/short circuit.
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|
Q.
Is the check result normal?
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Repair the connector(s) or wiring harness.
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Q.
Is the check result normal?
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Repair the connector(s) or wiring harness.
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|
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|
- Data list reference table (Refer to
).
- Item 10: Air flow 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 ).
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- After replacing the air flow sensor, reconfirm whether the diagnosis code is set.
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Q.
Is the diagnosis code set?
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