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1
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VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
• Has the FREEZE FRAME DATA been recorded?
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Yes
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Go to the next step.
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No
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Record the FREEZE FRAME DATA on the repair order, then go to the next step.
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2
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VERIFY RELATED REPAIR INFORMATION AVAILABILITY
• Verify related service repair information availability.
• Is any related repair information available?
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Yes
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Perform repair or diagnosis according to the available repair information.
• If the vehicle is not repaired, go to the next step.
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No
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Go to the next step.
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3
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INSPECT FAN CONTROL MODULE CONNECTOR CONDITION
• Switch the ignition to OFF.
• Disconnect the fan control module connector.
• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
• Is there any malfunction?
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Yes
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Repair or replace the connector and/or terminals, then go to Step 8.
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No
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Go to the next step.
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4
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INSPECT FAN CONTROL MODULE GROUND CIRCUIT FOR OPEN
• Disconnect battery negative terminal.
• Fan control module component connector is disconnected.
• Inspect for continuity between fan control module terminals 1A and 2A (wiring harness-side) and body ground.
• Is there any continuity?
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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 wiring harness and/or ground point for a possible open circuit, then go to Step 8.
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5
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INSPECT FAN CONTROL MODULE POWER SUPPLY CIRCUIT FOR OPEN OR SHORT TO GROUND
• Reconnect the battery negative terminal.
• Fan control module connector is disconnected.
• Switch the ignition to ON (engine off).
• Measure the voltage at the fan control module terminal 1D (wiring harness-side).
• Is the voltage B+?
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Yes
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Go to the next step.
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No
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Verify the FAN1 and FAN2 fuse condition.
• If the FAN1 and/or FAN2 fuse is blown, repair or replace wiring harness for a possible short to ground circuit.
• If the FAN1 and FAN2 fuse is normal, repair or replace wiring harness for a possible open circuit.
Then go to Step 8.
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6
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INSPECT PCM CONNECTOR CONDITION
• Disconnect the PCM connector.
• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
• Is there any malfunction?
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Yes
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Repair or replace the connector and/or terminals, then go to Step 8.
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No
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Go to the next step.
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7
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INSPECT COOLING FAN CONTROL SIGNAL CIRCUIT FOR OPEN
• Battery negative terminal is disconnected.
• Fan control module and PCM connectors are disconnected.
• Inspect for continuity between fan control module terminal 1C (wiring harness-side) and PCM terminal 318 (wiring harness-side).
• Is there any continuity?
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Yes
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Replace the cooling fan component, then go to the next step.
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No
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Repair or replace the connector and/or terminals, then go to the next step.
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8
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VERIFY THAT DTC P0483 TROUBLESHOOTING IS COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear the DTC from the PCM memory using the M-MDS.
• Run the vehicle under the FREEZE FRAME DATA stored condition.
• Is the same DTC present?
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Yes
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Repeat the inspection from Step 1.
• If the malfunction recurs, replace the PCM.
Go to the next step.
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No
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Go to the next step.
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9
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VERIFY AFTER REPAIR PROCEDURE
• Perform the after repair procedure.
• Are any DTCs present?
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Yes
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Go to the applicable DTC inspection.
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No
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DTC troubleshooting completed.
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