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1
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INSPECT MAP LIGHT
• Is the map light normal?
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Yes
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Go to the next step.
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No
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Replace the map light bulb or map light, then go to Step 5.
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2
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INSPECT MAP LIGHT CONNECTOR CONDITION
• Switch the ignition off.
• Disconnect the negative battery terminal.
• Disconnect the map light connector.
• Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
• Is the connector normal?
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Yes
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Go to the next step.
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No
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Repair or replace the connector, then go to Step 5.
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3
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INSPECT ELECTRICAL SUPPLY UNIT (ESU) CONNECTOR CONDITION
• Disconnect the electrical supply unit (ESU) connector.
• Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
• Is the connector normal?
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Yes
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Go to the next step.
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No
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Repair or replace the connector, then go to Step 5.
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4
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INSPECT MAP LIGHT CIRCUIT FOR SHORT TO POWER SUPPLY
• Verify that the map light and electrical supply unit (ESU) connectors are disconnected.
• Connect the negative battery terminal.
• Switch the ignition ON (engine off or on).
• Measure the voltage at map light terminal B (wiring harness-side).
• Is the voltage 0 V?
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Yes
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Go to the next step.
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No
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Refer to the wiring diagram and verify whether or not there is a common connector between map light terminal B and electrical supply unit (ESU) terminal 2L.
If there is a common connector:
• 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 power supply.
• Repair or replace the malfunctioning part.
If there is no common connector:
• Repair or replace the wiring harness which has a short to power supply.
Go to the next step.
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5
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VERIFY THAT REPAIRS HAVE BEEN COMPLETED
• Always reconnect all disconnected connectors.
• Connect the negative battery terminal.
• Clear the DTC for the electrical supply unit (ESU) using the M-MDS.
• Operate the room light switch to DOOR position.
• Retrieve the electrical supply unit (ESU) DTCs using the M-MDS.
• Is the same Pending DTC present?
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Yes
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Repeat the inspection from Step 1.
• If the malfunction recurs, replace the electrical supply unit (ESU).
Go to the next step.
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No
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Go to the next step.
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6
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VERIFY IF OTHER DTCs DISPLAYED
• Are any other DTCs displayed?
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Yes
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Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
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No
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DTC troubleshooting completed.
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