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DTC P0A1F:09 OR P0A1F:96 [Mazda M Hybrid BATTERY]

DTC P0A1F:09 OR P0A1F:96 [Mazda M Hybrid BATTERY]

id140204302800


Details On DTCs

Description

P0A1F:09: CPU in Mazda M Hybrid battery: Input signal voltage malfunction

P0A1F:96: Analog IC in Mazda M Hybrid battery: Input signal voltage malfunction
Detection condition
Determination conditions
P0A1F:09
•  The Mazda M Hybrid battery detects a CPU input signal voltage processing malfunction in the Mazda M Hybrid battery.
P0A1F:96
•  The Mazda M Hybrid battery detects an analog IC input signal voltage processing malfunction in the Mazda M Hybrid battery.
Preconditions
P0A1F:09
•  Mazda M Hybrid battery is any of the following conditions (PID: BECM_STAT)
―  INITIAL
―  STANDBY
―  PRECHARGE
―  READY
P0A1F:96
•  Mazda M Hybrid battery is any of the following conditions (PID: BECM_STAT)
―  INITIAL
―  STANDBY
―  PRECHARGE
―  READY
•  The following DTC is not detected:
―  P1B04:81
―  P1B04:33
Malfunction determination period
•  3 s period
Drive cycle
•  1
Self test type
•  CMDTC self test, ODDTC self test
Sensor used
•  Mazda M Hybrid battery
Fail-safe function
•  The integrated starter generator (ISG) only generates power required for power supply to the 12 V system.
•  Inhibits the i-stop control.
•  Inhibits the non-power generation control.
•  Inhibits regenerative braking by the integrated starter generator (ISG).
•  Inhibits motor assist control by the integrated starter generator (ISG).
Vehicle status when DTCs are output
•  Inhibits the i-stop control.
Possible cause
•  Mazda M Hybrid battery malfunction
―  Mazda M Hybrid battery internal CPU malfunction


System Wiring Diagram

•  Not applicable

Function Explanation (DTC Detection Outline)

P0A1F:09
•  If a CPU malfunction is detected for 3 s by the Mazda M Hybrid battery on-board diagnostic function, the Mazda M Hybrid battery determines a malfunction and stores a DTC.
P0A1F:96
•  There are two types of cell voltage sensors in the Mazda M Hybrid battery, measurement system and the constant monitor system, the input signal voltage of each sensor is compared and if the difference between the voltages is the specification or more for a continuous 3 s, the Mazda M Hybrid battery determines a malfunction and stores a DTC.

Repeatability Verification Procedure

1.  Switch the ignition ON (engine off or on) and wait for 10 s or more.

PID Item/Simulation Item Used In Diagnosis

•  Not applicable

Diagnostic Procedure

Step

Inspection

Results

Action
1
RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION
•  Record the snapshot data.
Note
•  Recording can be facilitated using the screen capture function of the PC.
—
Go to the next step.
2
VERIFY WHETHER MALFUNCTION IS PRESENT OR PAST
•  Perform the DTC inspection for the Mazda M Hybrid battery.
•  Is DTC P0A1F:09 or P0A1F:96 a present malfunction?
Yes
Go to the next step.
No
Go to Step 4.
3
VERIFY WHETHER MALFUNCTION IS PRESENT OR PAST AGAIN
•  Switch the ignition off.
•  Switch the ignition ON (engine off or on) and wait for 10 s or more.
•  Perform the DTC inspection for the Mazda M Hybrid battery.
•  Is DTC P0A1F:09 or P0A1F:96 a present malfunction?
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 Mazda M Hybrid battery and perform the repair completion verification.
No
Go to the next step.
4
INSPECT Mazda M Hybrid BATTERY FOR MALFUNCTION DEPENDING ON REPEATABILITY
•  Switch the ignition off.
•  Switch the ignition ON (engine off or on) and wait for 10 s or more.
•  Perform the DTC inspection for the Mazda M Hybrid battery.
•  Is DTC P0A1F:09 or P0A1F:96 a present malfunction?
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 Mazda M Hybrid battery and perform the repair completion verification.
No
The system is normal. (Explain to the customer that a malfunction was detected temporarily, but the vehicle is currently normal.)
Go to the next step.
Repair completion verification
VERIFY IF OTHER DTCs DISPLAYED
•  Perform the DTC inspection.
•  Are any other DTCs displayed?
Yes
Repair the malfunctioning location according to the applicable DTC troubleshooting.
No
DTC troubleshooting completed.