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- Refer to Data List Reference Table .
- Item 2: Engine revolution
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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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|
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- Disconnect connector, and measure at harness side.
- Ignition switch: ON
- Voltage between terminal engine-ECU SGT line and body earth.
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Q.
Is the check result normal?
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- Disconnect engine-ECU harness, and connect special tool power plant ECU check
harness (MB992291) to measure at connector for inspection.
- Disconnect crank angle sensor connector.
- Ignition switch: ON
- Voltage between terminal SGT and body earth.
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Q.
Is the check result normal?
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Repair or replace the connector, or check
and repair harness between crank angle sensor connector terminal and engine-ECU connector terminal
SGT.
- Check output line for open circuit.
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- Check output line for short circuit.
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Q.
Is the check result normal?
|
|
Repair or replace the connector, or repair the damaged harness wire.
|
|
|
|
- Refer to Data List Reference Table .
- Item 2: Crank angle 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 ).
|
|
|
|
- Use special tool test harness (MB991709) to connect connector, and measure
at pick-up harness.
- Ignition switch: ON
- Voltage between terminal engine-ECU SGTB line and body earth.
|
|
Q.
Is the check result normal?
|
|
- Check power supply line for open/short circuit and damage.
|
|
Q.
Is the check result normal?
|
|
Repair or replace the connector, or repair the damaged harness wire.
|
|
|
|
- Disconnect connector, and measure at harness side.
- Resistance between terminal engine-ECU SGTG line and body earth.
|
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OK: Continuity (2 Ω or less)
|
|
Q.
Is the check result normal?
|
|
- Check earthing line for open circuit and damage.
|
|
Q.
Is the check result normal?
|
|
Repair or replace the connector, or repair the damaged harness wire.
|
|
|
|
- Check output line for damage.
|
|
Q.
Is the check result normal?
|
|
Repair or replace the connector, or repair the damaged harness wire.
|
|
|
|
- Use special tool test harness (MB991709) to connect connector, and measure
at pick-up harness.
- Engine: Idling
- Transmission: Neutral
- Voltage between terminal engine-ECU SGT line and body earth.
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OK: Waveforms should be displayed on Inspection procedure using an oscilloscope
(Refer to ), its maximum value should be 4.8 V or more, and
its minimum valve should be 0.6 V or less with no noise in waveform.
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|
Q.
Is the check result normal?
|
|
Q.
Is the check result normal?
|
|
- After replacing the crank angle sensor, reconfirm whether the diagnosis code
is set.
|
|
Q.
Is the diagnosis code set?
|
|
- After replacing the crank angle sensor, reconfirm whether the diagnosis code
is set.
|
|
Q.
Is the diagnosis code set?
|
|
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection
Service Points - How to Cope with Intermittent Malfunctions ).
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