DTC P18A4:00 [PCM (SKYACTIV-G)]
DTC P18A4:00 [PCM (SKYACTIV-G)]
SM2515127
id0102t4977200
Outline
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System malfunction location |
PCM i-ACTIV AWD control system |
|---|---|
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Detection condition
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• A condition in which the difference between the target current of the AWD solenoid control current and the actual current is the specification or more continues for the specified time or more.
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Fail-safe
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• Inhibits the i-ACTIV AWD control.
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Possible cause
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• Detects high differential oil temperature to switch to protect the system
• i-ACTIV AWD system-related part connector or terminal malfunction
• AWD solenoid malfunction
• Electrical supply unit (ESU) malfunction
• PCM malfunction
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System wiring diagram
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• Not applicable
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Connector diagram
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• Not applicable
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Diagnostic Procedure
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Step |
Inspection |
Results |
Action |
|---|---|---|---|
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1
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RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION
• Record the freeze frame data/snapshot data.
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—
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Go to the next step.
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2
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VERIFY RELATED REPAIR INFORMATION OR SERVICE INFORMATION AVAILABILITY
• Verify related Service Bulletins, on-line repair information, or Service Information availability.
• Is any related Information available?
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Yes
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Perform repair or diagnosis according to the available 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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ALLOW THE VEHICLE TO COOL DOWN FOR WHILE
• Switch the ignition to off and allow vehicle to cool down.
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—
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Go to the next step.
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4
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INSPECT i-ACTIV AWD SYSTEM-RELATED PART CONNECTORS FOR MALFUNCTION
• Inspect the following connectors and terminals. (See CONNECTOR INSPECTION.)
• Are the connector and terminal 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 malfunctioning location and perform the repair completion verification.
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5
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INSPECT AWD SOLENOID FOR MALFUNCTION
• Inspect the applicable part. (See AWD SOLENOID INSPECTION.)
• Is the part 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 malfunctioning location and perform the repair completion verification.
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6
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VERIFY ELECTRICAL SUPPLY UNIT (ESU) DTCs
• Perform the DTC inspection for the body control module (BCM). (See DTC INSPECTION.)
• Are any electrical supply unit (ESU) DTCs displayed?
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Yes
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Repair the malfunctioning location according to the applicable DTC troubleshooting.
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No
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Go to the next step.
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7
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INSPECT ELECTRICAL SUPPLY UNIT (ESU) FOR MALFUNCTION
• Inspect the following connectors and terminals. (See ELECTRICAL SUPPLY UNIT (ESU) INSPECTION.)
• Are all the connectors and terminals 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 malfunctioning location and perform the repair completion verification.
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Repair completion verification 1
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VERIFY THAT VEHICLE IS REPAIRED
• Clear the DTC recorded in the memory. (See CLEARING DTC.)
• Replicate the vehicle conditions at the time the DTC was detected using the following procedure.
• Perform the DTC inspection for the PCM. (See DTC INSPECTION.)
• Is the same Pending DTC present?
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Yes
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Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.
If the CAN communication is normal, perform the diagnosis from Step 1.
• If the malfunction recurs, replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))].)
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No
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Go to the next step.
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Repair completion verification 2
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VERIFY IF OTHER DTCs DISPLAYED
• Perform the DTC inspection. (See DTC INSPECTION.)
• Are any other DTCs displayed?
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Yes
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Repair the malfunctioning location according to the applicable DTC troubleshooting.
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No
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DTC troubleshooting completed.
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