DC-DC CONVERTER INSPECTION [SKYACTIV-D 1.5]

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DC-DC Converter Operation Inspection

1.  Verify that the DC-DC converter related DTC is detected. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-D 1.5].)

•  If DTCs are detected, repair the malfunctioning part according to the applicable DTC troubleshooting.

•  If a DTC is not detected, go to the next step.

2.  Inspect the battery. (See BATTERY INSPECTION [SKYACTIV-D 1.5])

•  If there is a malfunction, recharge or replace the battery, then go to the next step. (See BATTERY RECHARGING [SKYACTIV-D 1.5].) (See BATTERY REMOVAL/INSTALLATION [SKYACTIV-D 1.5].)

3.  When the engine is restarted by the i-stop control, verify that the following measured voltages are not lower than 11.5V.

•  Rain sensor (auto light sensor) supply terminal (vehicle wiring harness-side connector terminal D) (with auto light system)

•  Audio unit supply terminal (vehicle wiring harness-side connector terminal 1B) (without center display)

•  Tuner and amp unit (TAU) supply terminal (vehicle wiring harness-side connector terminal 2B) (with center display)

―  If it cannot be verified, go to the next step.

4.  Inspect the wiring harness between the following terminals for an open or short circuit.

•  DC-DC converter terminal K—Rain sensor (auto light sensor) terminal D (with auto light system)

•  DC-DC converter terminal K—Audio unit terminal 1B (without center display)

•  DC-DC converter terminal K—Tuner and amp unit (TAU) terminal 2B (with center display)

―  If there is any open or short circuit in the wiring harness, repair or replace the malfunctioning part.

―  If there is any open or short circuit in the wiring harness, replace the DC-DC converter. (See DC-DC CONVERTER REMOVAL/INSTALLATION [SKYACTIV-D 1.5].)