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| Step | Inspection | Action |
| 1 | INSPECT LF CONTROL UNIT CONNECTOR
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Switch the ignition off.
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Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].)
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Disconnect the LF control unit connector.
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Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
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Is the connector normal?
| Yes | Go to the next step. |
| No | Repair or replace the connector, then go to Step 6. |
| 2 | INSPECT START STOP UNIT CONNECTOR
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Disconnect the start stop unit connector.
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Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
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Is the connector normal?
| Yes | Go to the next step. |
| No | Repair or replace the connector, then go to Step 6. |
| 3 | INSPECT FOR SHORT TO GROUND IN WIRING HARNESS BETWEEN START STOP UNIT AND LF CONTROL UNIT
| Yes | Refer to the wiring diagram and verify whether or not there is a common connector between start stop unit terminal 2F and LF control unit terminal M.
If there is a common connector:
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Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground.
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Repair or replace the malfunctioning part.
Go to Step 6. |
| No | Go to the next step. |
| 4 | INSPECT FOR OPEN CIRCUIT IN WIRING HARNESS BETWEEN START STOP UNIT AND LF CONTROL UNIT
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Verify that the start stop unit and LF control unit connectors are disconnected.
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Inspect for continuity between start stop unit terminal 2F (wiring harness-side) and LF control unit terminal M (wiring harness-side).
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Is there continuity?
| Yes | Go to the next step. |
| No | Refer to the wiring diagram and verify whether or not there is a common connector between start stop unit terminal 2F and LF control unit terminal M.
If there is a common connector:
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Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.
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Repair or replace the malfunctioning part.
Go to Step 6. |
| 5 | INSPECT LF CONTROL UNIT
| Yes | Go to the next step. |
| No | Replace the LF control unit, then go to the next step. (See LF CONTROL UNIT REMOVAL/INSTALLATION.) |
| 6 | VERIFY THAT REPAIRS HAVE BEEN COMPLETED
| Yes | Repeat the inspection from Step 1.
Go to the next step. |
| No | Go to the next step. |
| 7 | VERIFY IF OTHER DTCs DISPLAYED
| Yes | Repair or replace the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [ADVANCED KEYLESS ENTRY SYSTEM].) |
| No | DTC troubleshooting completed. |
