DTC P0A8F:00 [PCM (SKYACTIV-D 2.2)]

id0102j5569100

Note
•  To determine the malfunctioning part, proceed with the diagnostics from [Function inspection using M-MDS].

Details on DTCs

System Malfunction location

Power supply system: Low input
Detection condition
Determination condition
•  When any 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 with ignition switched OFF for a continuous 5 days.
Preconditions
•  Difference in battery voltage when engine is switched OFF compared to until 30 min have elapsed since ignition was switched OFF is specified value or less
•  Electrical current from battery for 30 min from when ignition was switched OFF is within specified value
Drive cycle
•  1
Self-test type
•  CMDTC self test
Sensor/unit used
•  CURRENT SENSOR
Fail-safe
•  Not applicable
Vehicle status when DTCs are output
•  i-stop warning light (amber) flashes
•  Master warning light is turned on
•  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 for the vehicle's electrical devices while the vehicle is being driven/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: VERIFY IF BATTERY VOLTAGE IS FALSELY RECOGNIZED DUE TO OCCURRENCE OF CURRENT SENSOR DTC
•  Switch the ignition OFF, and then switch it ON (engine off).
•  Perform the DTC inspection for the PCM using the M-MDS.
•  Has DTC P058A:00 been recorded?
Yes
Repair the malfunctioning location according to the applicable DTC troubleshooting.
(See DTC TABLE [PCM (SKYACTIV-D 2.2)].)
Go to the next step.
No
Go to the next step.
2
PURPOSE: VERIFY IF BATTERY VOLTAGE IS FALSELY RECOGNIZED DUE TO OCCURRENCE OF CAN OR LIN COMMUNICATION DTC
•  Perform the DTC inspection for the PCM and the front body control module (FBCM) using the M-MDS.
•  Are DTCs related to CAN or LIN communication stored?
Yes
Repair the malfunctioning location according to the applicable DTC troubleshooting.
(See DTC TABLE [PCM (SKYACTIV-D 2.2)].)
(See DTC TABLE [FRONT BODY CONTROL MODULE (FBCM)].)
Go to the next step.
No
Go to the next step.
3
PURPOSE: TO DETERMINE IF CAUSE IS BATTERY MALFUNCTION BY VERIFYING DTC
•  Has the DTC P0A8F:00 been verified? (Is a DTC stored, not a pending code?)
Yes
Replace the battery.
(See BATTERY REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
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.
•  Steps 2 to 3
―  Verify that the primary malfunction is resolved and there are no other malfunctions.

Step

Inspection

Results

Action
1
PURPOSE: TO DETERMINE INTEGRITY OF BATTERY
•  Inspect the battery.
•  Is the battery normal?
Yes
Go to the next step.
No
Replace the battery, then go to the next step.
(See BATTERY REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
2
PURPOSE: VERIFICATION OF VEHICLE REPAIR COMPLETION
•  Reconnect all disconnected connectors and hoses.
•  Refer to the [MEMORY CLEARING PROCEDURE] and clear the DTC.
•  Implement the repeatability verification procedure.
•  Display the DTCs using the M-MDS.
•  Is DTC P0A8F:00 displayed?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the PCM, then go to the next step.
No
Go to the next step.
3
PURPOSE: VERIFY IF THERE IS ANY OTHER MALFUNCTION
•  Has any other DTC or pending code been stored?
Yes
Repair the malfunctioning location according to the applicable DTC troubleshooting.
(See DTC TABLE [PCM (SKYACTIV-D 2.2)].)
No
DTC troubleshooting completed.