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DTC P0A8F:00 [PCM (SKYACTIV-D)]

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Note

•  To determine the malfunctioning part, proceed with the diagnostics from "Function Inspection Using M-MDS".

Details On DTCs

Description	Power system: Low input
Detection condition	Determination conditions	•  Any one of the following conditions is met: ―  Battery voltage is 11 V or less when ignition is switched off after leaving vehicle for 30 days or more. ―  Battery voltage is 11 V or less for a continuous 5 days when ignition is switched off.
	Preconditions	•  Battery voltage difference between right before switch the ignition ON and 30 min before that equals to the specified value or less. •  Battery currents right before switch the ignition ON and 30 min before that equal to the specified value or less.
	Drive cycle	•  2
	Self test type	•  CMDTC self test
	Sensor used	•  Current sensor
Fail-safe function	•  Inhibits engine-stop by operating the i-stop function.
Vehicle status when DTCs are output	•  Flash the i-stop warning light (amber) •  Illuminates the master warning light. •  The engine cannot be started or the engine may stall due to battery voltage decrease.
Possible cause	•  Battery malfunction •  Current sensor malfunction •  PCM malfunction

System Wiring Diagram

Function Explanation (DTC Detection Outline)

Repeatability Verification Procedure

PID Item/Simulation Item Used In Diagnosis

Function Inspection Using M-MDS

Step	Inspection	Results	Action
1	PURPOSE: 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?	Yes	Perform repair or diagnosis according to the available information. •  If the vehicle is not repaired, go to the next step.
		No	Go to the next step.
2	PURPOSE: RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION •  Record the freeze frame data/snapshot data. Note •  Recording can be facilitated using the screen capture function of the PC.	—	Go to the next step.
3	PURPOSE: VERIFY IF BATTERY VOLTAGE IS FALSELY RECOGNIZED BY DTC RELATED CURRENT SENSOR •  Perform the DTC inspection for the PCM. (See DTC INSPECTION.) •  Are any of the following DTCs displayed? ―  P058A:00	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC P058A:00 [PCM (SKYACTIV-D)].) Go to the next step.
		No	Go to the next step.
4	PURPOSE: VERIFY IF BATTERY VOLTAGE IS FALSELY RECOGNIZED BY DTC RELATED CAN OR LIN COMMUNICATION •  Perform the DTC inspection for the PCM. (See DTC INSPECTION.) •  Are any other DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [PCM (SKYACTIV-D)].) Go to the next step.
		No	Go to the next step.
5	PURPOSE: VERIFY DTC •  Perform the DTC inspection for the PCM. (See DTC INSPECTION.) •  Are any of the following DTCs displayed? ―  P058A:00	Yes	Replace the battery. (See BATTERY REMOVAL/INSTALLATION [SKYACTIV-D 1.8].) Go to Troubleshooting Diagnostic Procedure to perform the repair completion verification.
		No	Go to Troubleshooting Diagnostic Procedure to perform the procedure from Step 1.

Troubleshooting Diagnostic Procedure

―  Perform a unit inspection of the battery.

―  Verify that the primary malfunction is resolved and there are no other malfunctions.

Step	Inspection	Results	Action
1	PURPOSE: INSPECT BATTERY FOR MALFUNCTION •  Inspect the applicable part. (See BATTERY INSPECTION [(E)].) •  Is the part normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification. (See BATTERY REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)
Repair completion verification 1	PURPOSE: VERIFY THAT VEHICLE IS REPAIRED •  Install/connect the part removed/disconnected during the troubleshooting procedure. •  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. ―  Implement the repeatability verification procedure. (See Repeatability Verification Procedure.) •  Perform the DTC inspection for the PCM. (See DTC INSPECTION.) •  Is the same Pending DTC present?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].) 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-D 1.8].)
		No	Go to the next step.
Repair completion verification 2	PURPOSE: VERIFY IF OTHER DTCs DISPLAYED •  Perform the DTC inspection. (See DTC INSPECTION.) •  Are any other DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
		No	DTC troubleshooting completed.