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- When detects abnormalities, the DC-DC converter should send the signal to
the EV-ECU. The EV-ECU receives the signal and then lights the charge warning lamp of the auxiliary
battery of the combination meter.
- If the charge warning lamp of the auxiliary battery is lit in the READY state, the DC-DC converter
can be failed, or the circuit of the DC-DC converter would be failed.
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|
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- The auxiliary battery is failed.
- The DC-DC converter is failed.
- Open circuits of DC-DC converter, short circuits to earth or damage; poor contact
of connector
- The EV-ECU is failed.
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- Connect the M.U.T.-III to the diagnosis connector.
- Check auxiliary battery (Refer to GROUP 54A - Auxiliary Battery - On-vehicle
Service - Battery Test
 ).
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Q.
Is the check result normal?
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 Replace the auxiliary battery.
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- Electric motor switch: READY
- Voltage between fuse (120 A) terminal of terminal No. 26 and earth.
OK: 14.0 V or more
Q.
Is the check result normal?
 Go to Step 3 .
Go to Step 8 .
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Q.
Is the check result normal?
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- Disconnect connector, and measure at harness side.
- Electric motor switch: ON
- Voltage between terminal No. 7 and earth.
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Q.
Is the check result normal?
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- Check power supply line for open circuit, short circuit to earth.
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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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- Check power supply line for damage.
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Q.
Is the check result normal?
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Q.
Does the trouble symptom persist?
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Replace the on board charger/DC-DC converter.
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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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- Disconnect connector, and measure at harness side.
- Resistance between terminal No. 10 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 intermediate connector C-104, and repair
if necessary. If intermediate connector is normal, check and repair harness between E-03 (terminal No.
10) on board charger/DC-DC converter connector and body earth.
- Check earthing line for open circuit and damage.
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- Disconnect connector, and measure at harness side.
- Electric motor switch: ON
- Voltage between terminal No. 8 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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|
Check intermediate connectors B-27, C-102
and C-112, and repair if necessary. If intermediate connector is normal, check and repair harness between
A-08X (terminal No. 1) EV control relay connector and E-03 (terminal No. 8) on board charger/DC-DC converter
connector.
- Check power supply line for open circuit, short circuit
to earth.
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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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Q.
Is the check result normal?
|
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- Check signal line for open circuits, short circuits to earth and damage.
|
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Q.
Is the check result normal?
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- Check signal line for open circuits, short circuits to earth and damage.
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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 output line for open circuits, short circuits to earth and damage.
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Q.
Is the check result normal?
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| danger |
High voltage system components are served, before to pull service plugs to
shut down high voltage before serving (Refer to ).
|
| danger |
When pulling service plugs, wear the specified protective equipment (Refer
to ).
|
- Check continuity of fuse both ends
OK: Continuity
Q.
Is the check result normal?
Go to Step 20
Replace the on board charger/DC-DC converter and the fuse.
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|
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Q.
Is the check result normal?
|
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|
- Check power supply line for open circuit and damage.
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Q.
Is the check result normal?
|
|
|
Q.
Is the check result normal?
|
|
|
- Check power supply line for open circuit and damage.
|
|
|
Q.
Is the check result normal?
|
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