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- Check battery (Refer to GROUP 54A - Battery - On-vehicle Service - Battery Test
).
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Q.
Is the check result normal?
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Q.
Is diagnosis code stored?
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Inspection chart for diagnosis code (Refer to ).
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- Disconnect connector, and measure at harness side.
- Ignition switch: ON
- Voltage between terminal engine-ECU ALTL line and earth.
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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 the connector(s) or wiring harness.
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Q.
Does the trouble symptom persist?
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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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Repair the connector(s) or wiring harness.
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- Disconnect connector, and measure at alternator side.
- Connect special tool Test Harness (MB991658) to all terminals except the terminal engine-ECU ALTG line.
- Ignition switch: ON
- Voltage between terminal engine-ECU ALTG line and earth.
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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 the damaged harness wire.
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- Measure engine-ECU terminal voltage.
- Engine: Idle operation after warm-up
- Transmission: Neutral <M/T>, P range <CVT>
- Cooling fan: Not operated
- Voltage between terminal ALTG and earth.
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OK: The voltage increases when the headlamp switch and the rear window defogger switch are turned ON from OFF.
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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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