P0AC0-817

DTC Code	DTC Name
P0AC0-817	Hybrid Battery Pack Current Sensor Circuit Range / Performance

DESCRIPTION

A battery current sensor is installed to the positive (+) cable side of the HV battery and detects current flowing from the HV battery. The battery current sensor outputs voltage, which changes between 0 and 5 V according to the detected amperage, to the IB terminal of the battery smart unit. The battery smart unit sends signals to the power management control ECU. The power management control ECU determines the charging and discharging amount of the HV battery based on the received signals and calculates the SOC of the HV battery through the accumulated amperage.

DTC No.	INF Code	DTC Detection Condition	Trouble Area
P0AC0	817	Abnormal battery current sensor characteristics: An abnormality in the battery current sensor characteristics is detected based on the relationship between hybrid system power consumption and battery power output. (1 trip detection logic)	Hybrid battery junction block assembly Battery smart unit

DTC No.

INF Code

DTC Detection Condition

Trouble Area

P0AC0

817

Abnormal battery current sensor characteristics: An abnormality in the battery current sensor characteristics is detected based on the relationship between hybrid system power consumption and battery power output.

(1 trip detection logic)

Hybrid battery junction block assembly
Battery smart unit

MONITOR DESCRIPTION

The power management control ECU detects malfunctions of the battery current sensor by monitoring motor and generator torque. If the power management control ECU detects a battery current sensor malfunction, the power management control ECU will illuminate the MIL and store a DTC.

MONITOR STRATEGY

Related DTCs	P0AC0 (INF 817): Current sensor malfunction (gain or offset)
Required sensors / components	Battery current sensor
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	TMC's intellectual property
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not present	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

-

COMPONENT OPERATING RANGE

Power management control ECU

DTC P0AC0 (INF 817) is not detected

CONFIRMATION DRIVING PATTERN

Connect the Techstream to the DLC3.
Turn the power switch on (IG) and turn the Techstream on.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the power switch off and wait for 30 seconds or more.
Turn the power switch on (IG) and turn the Techstream on.
Turn the power switch on (READY).
Drive the vehicle for approximately 10 minutes according to the freeze frame data items "Vehicle Spd", "Accelerator Degree", "Power Resource IB", "M(MG2) Trq Exec Val" and "G(MG1) Trq Exec Val".
Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
Read the current DTCs.
Tech Tips
- If a current DTC is output, the system is malfunctioning.
- If current DTCs are not output, perform the following steps to check for permanent DTCs.
Check that the permanent DTCs are cleared.
If the permanent DTCs are not cleared, perform the universal trip, and then check for permanent DTCs again.

INSPECTION PROCEDURE

Tech Tips

After the repair, clear the DTCs and perform the following procedure to check that DTCs are not output.

Drive the vehicle for approximately 10 minutes according to the freeze frame data items "Vehicle Spd", "Accelerator Degree", "Power Resource IB", "M(MG2) Trq Exec Val" and "G(MG1) Trq Exec Val".

PROCEDURE

CHECK DTC OUTPUT (HYBRID CONTROL)

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

Check if DTCs are output.

Result

Result	Proceed to
P0AC0-817 only is output.	A
P0AFC-123 is output.	B

Turn the power switch off.

B

GO TO DTC CHART (P0AFC-123) Click here

A

REPLACE HYBRID BATTERY JUNCTION BLOCK ASSEMBLY

Click here

NEXT
CLEAR DTC
1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
4. Clear DTCs and freeze frame data.
5. Turn the power switch off.
NEXT
PERFORM ROAD TEST
1. Drive the vehicle for approximately 10 minutes according to the freeze frame data items "Vehicle Spd", "Accelerator Degree", "Power Resource IB", "M(MG2) Trq Exec Val" and "G(MG1) Trq Exec Val".
  
  CAUTION:
  
  When performing the confirmation driving pattern, obey all speed limits and traffic laws.
NEXT

CHECK DTC OUTPUT (HYBRID CONTROL)

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

Check if DTCs are output.

Result

Result	Proceed to
P0AC0-817 is not output.	A
P0AC0-817 is output again.	B

Turn the power switch off.

B

REPLACE BATTERY SMART UNIT Click here

A

COMPLETED

HYBRID CONTROL SYSTEM, Diagnostic DTC:P0AC0-817