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Q.
Is diagnosis code No. B1353 set?
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Perform the troubleshooting of diagnosis code No. B1353: DC/DC converter (control system) control circuit .
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- Turn the ignition switch to "ON" position.
- Turn the ignition switch to "LOCK" (OFF) position.
- Repeat Steps 1-2.
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- Disconnect connector, and measure at harness side.
- Voltage between terminal PWR and earth.
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Q.
Is the check result normal?
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- Item 27: DC-DC OUT for powertrain (Input)
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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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NO <Failure> : Perform the troubleshooting of diagnosis code No. B1351: DC/DC converter (control system) system malfunction (Refer to ).
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- Disconnect connector, and measure at harness side.
- Ignition switch: ON
- Voltage between terminal DCDP and earth.
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Q.
Is the check result normal?
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- Measure the voltage AS&G-ECU connector terminal.
- Ignition switch: ON
- Voltage between terminal DCDP 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 check and repair of short to earth in DCDP line between AS&G-ECU connector and DC/DC converter (control system) connector.
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Repair or replace the connector.
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- Reconfirmation of the diagnosis code.
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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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Repair the connector(s) or wiring harness.
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- Measure the voltage DC/DC converter (control system) connector terminal.
- Ignition switch: ON
- Voltage between terminal DCDP and 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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Replace the DC/DC converter (control system).
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