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Check Conditions
- The electric motor switch is "ON" position or while the main battery is charged.
- The following diagnosis code is not set.
- P1A42: Power supply circuit of main battery current sensor
abnormal
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Judgement Criterion
- The output voltage of the main battery current sensor (low) is less than 0.2 V.
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- The output voltage of the main battery current sensor (low) is more than
4.8 V.
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- Use the main battery current sensor (high) to control and turn off the balancer
drive when the main battery current sensor (high) is normal.
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- The main battery current sensor is failed.
- Open circuits of main battery current sensor circuit, short circuits to earth, short
circuits to power supply system or damage; poor contact of connector.
- The BMU is failed.
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Q.
Is the check result normal?
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- Check main battery current sensor itself. (Refer to ).
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Q.
Is the check result normal?
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Replace the main battery.
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- Disconnect connector, and measure at harness side.
- Resistance between terminal No. 8 and earth.
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OK: Continuity (2 Ω or less)
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Q.
Is the check result normal?
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Q.
Is the check result normal?
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- Check earthing line for open circuit and damage.
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Q.
Is the check result normal?
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Q.
Is the diagnosis code set?
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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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- Check power supply line for damage.
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Q.
Is the check result normal?
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- Measure BMU terminal voltage
- Disconnect C-26 main battery connector
- Electric motor switch: ON
- Voltage between terminal No. 33 and earth.
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Q.
Is the check result normal?
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Check and repair harness between C-109 (terminal No.
33) BMU connector and C-26 (terminal No. 7) main battery connector.
- Check output line for short circuit to power supply.
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- Check output line for open circuit, short circuit to earth and damage.
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Q.
Is the check result normal?
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- Disconnect connector, and measure at harness side.
- Resistance between terminal No. 6 and earth.
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OK: Continuity (2 Ω or less)
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Q.
Is the check result normal?
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- Check the shield line for open circuit and damage.
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Q.
Is the check result normal?
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Q.
Is the diagnosis code set?
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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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