DTC P0A8F:00 [PCM (SKYACTIV-G 2.5T)]

id0102s8569100

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.
•  Inhibits the i-ELOOP control. (With i-ELOOP)
VEHICLE STATUS WHEN DTCs ARE OUTPUT
•  Flashes i-stop warning light (amber).
•  Illuminates the master warning light. (without multi-information display)
•  A warning message is displayed in the display.
•  The engine cannot be started or the engine may stall due to battery voltage decrease.
POSSIBLE CAUSE
•  Battery malfunction
•  Current sensor malfunction
•  Front body control module (FBCM) malfunction
•  PCM malfunction

System Wiring Diagram

•  Not applicable

Function Explanation (DTC Detection Outline)

•  The battery assures voltage for engine starting and while the vehicle is being driven, and for the vehicle's electrical devices when the engine is stopped by i-stop.
•  The PCM determines a dendrite malfunction by the condition in which the battery voltage value continues to be low for the specified time. In this case, the PCM determines a malfunction in a battery-related part and stores a DTC.

Repeatability Verification Procedure

1.  Start the engine

PID Item/Simulation Item Used In Diagnosis

•  Not applicable

Function Inspection Using M-MDS

STEP

INSPECTION

RESULTS

ACTION
1
PURPOSE: RECORD VEHICLE STATUS AT TIME OF DTC DETECTION TO UTILIZE WITH REPEATABILITY VERIFICATION
Note
•  Recording can be facilitated using the screen capture function of the PC.
•  Record the snapshot data on the repair order.
—
Go to the next step.
2
PURPOSE: VERIFY RELATED SERVICE INFORMATION AVAILABILITY
•  Verify related Service Information availability.
•  Is any related Service Information available?
Yes
Perform repair or diagnosis according to the available Service Information.
•  If the vehicle is not repaired, go to the next step.
No
Go to the next step.
3
PURPOSE: VERIFY IF BATTERY VOLTAGE IS FALSELY RECOGNIZED BY DTC RELATED CURRENT SENSOR
•  Switch the ignition off, then ON (engine off).
•  Perform the Pending Trouble Code Access Procedure and DTC Reading Procedure.
•  Is the PENDING CODE/DTC P058A:00 also present?
Yes
Go to the applicable PENDING CODE or DTC inspection.
(See DTC P058A:00 [PCM (SKYACTIV-G 2.5T)].)
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 PCM and front body control module (FBCM) DTC inspection using the M-MDS.
•  Are DTCs related CAN or LIN communication recorded?
Yes
Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [PCM (SKYACTIV-G 2.5T)].)
(See DTC TABLE [FRONT BODY CONTROL MODULE (FBCM)].)
Go to the next step.
No
Go to the next step.
5
PURPOSE: VERIFY DTC
•  Retrieve the PCM DTC using the M-MDS.
•  Is the DTC P058A:00 also present?
Yes
Replace the battery.
(See BATTERY REMOVAL/INSTALLATION.)
Go to the troubleshooting procedure to perform the procedure from Step 2.
No
Go to the troubleshooting procedure to perform the procedure from Step 1.

Troubleshooting Diagnostic Procedure

Intention of troubleshooting procedure
•  Step 1
?  Perform a unit inspection of the battery.
•  Step 2—3
?  Verify that primary malfunction is resolved and there are no other malfunctions.

STEP

INSPECTION

RESULTS

ACTION
1
PURPOSE: DETERMINE INTEGRITY OF BATTERY
•  Inspect the battery.
•  Is there any malfunction?
Yes
Replace the battery, then go to the next step.
(See BATTERY REMOVAL/INSTALLATION.)
No
Go to the next step.
2
PURPOSE: VERIFICATION OF VEHICLE REPAIR COMPLETION
•  Always reconnect all disconnected connectors.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Implement the repeatability verification procedure.
•  Perform the Pending Trouble Code Access Procedure.
•  Is the PENDING CODE for this DTC present?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the PCM.
Go to the next step.
No
Go to the next step.
3
PURPOSE: VERIFY IF THERE IS ANY OTHER MALFUNCTION
•  Is any other DTC or pending code stored?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [PCM (SKYACTIV-G 2.5T)].)
No
DTC troubleshooting completed.