P0A80 Difference in voltage between battery blocks is larger than the standard (2 trip detection)

DESCRIPTION

1. The HV battery uses nickel metal-hydride batteries and does not require external charging. The HV control ECU controls the SOC (state of charge) of the HV battery at a constant level during driving. The HV battery is composed of 30 modules, and each module consists of eight 1.2 V cells in series. The battery smart unit monitors battery block voltage at 15 locations. Each battery block is composed of 2 modules in a set.
   

   DTC No.	DTC Detection Condition	Trouble Area
   P0A80	Difference in voltage between battery blocks is larger than the standard (2 trip detection)	HV battery Battery smart unit

   HINT:

   P0A80 will not output unless the vehicle is driven for approximately 10 minutes after clearing the DTC.

MONITOR DESCRIPTION

The battery smart unit, which monitors the voltage of the battery blocks, determines that a malfunction has occurred if a voltage difference between the battery blocks exceeds the standard. When the malfunction detection condition is satisfied, the HV control ECU illuminates the MIL and sets a DTC.

INSPECTION PROCEDURE

1. READ OUTPUT DTC (DTC P0A1F IS OUTPUT)

1. Connect the intelligent tester to the DLC3.

2. Turn the ignition switch to the ON position.

3. Select the following menu items: Powertrain / Hybrid Control / DTC.

4. Read output DTCs. (Click here)

   Result:

   DTC P0A1F is output.
   

YES	REPLACE BATTERY SMART UNIT

NO
REPLACE HV BATTERY