DTC P0ABF-123: Hybrid Battery Pack Current Sensor Circuit; DTC P0AC1-123: Hybrid Battery Pack Current Sensor "A" Circuit Low; DTC P0AC2-123: Hybrid Battery Pack Current Sensor "A" Circuit High: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Select the following menu items: Powertrain / Hybrid Control / Trouble Codes.
4. Check if DTCs are output.

   Result

   DTC P0A1F-123 is output.

YES → GO TO INSPECTION PROCEDURE RELEVANT TO OUTPUT DTC 

NO: Go to next step 

1. Remove the service plug grip. Refer to REMOVAL .
2. Remove the HV relay assembly. Refer to REMOVAL .
3. Disconnect connector o1 from the battery smart unit.
4. Measure the resistance according to the value(s) in the table below.
   Fig 1: Identifying O1 And HV Relay Assembly Connectors Terminal Identification

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard resistance (Check for open)

   Tester Connection	Specified Condition
   IB (o1-9) - IB (3)	Below 1 Ω
   GIB (o1-20) - GIB (2)	Below 1 Ω
   VIB (o1-10) - VIB (1)	Below 1 Ω

   Standard resistance (Check for short)

   Tester Connection	Specified Condition
   IB (o1-9) or IB (3) - Body ground and other terminals	10 kΩ or higher
   GIB (o1-20) or GIB (2) - Body ground and other terminals	10 kΩ or higher
   VIB (o1-10) or VIB (1) - Body ground and other terminals	10 kΩ or higher

   HINT: 

   The wire harness is not available separately. If it cannot be repaired, replace the HV battery.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Connect connector o1 to the battery smart unit.
2. Install the battery carrier. Refer to INSTALLATION
3. Connect the auxiliary battery positive terminal cable of the frame wire. Refer to INSTALLATION
4. Turn the power switch on (IG).
5. Measure the voltage according to the value(s) in the table below.
   Fig 2: Identifying Battery Smart Unit O1 Connector Terminal Identification

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard voltage

   Tester Connection	Specified Condition
   VIB (o1-10) - GIB (o1-20)	4.6 to 5.4 V

   HINT: 

   If the power switch is turned on (IG) with the service plug grip removed, DTC P0A0D-350 for the interlock switch system will be set.

NG → See step   6 

OK: Go to next step 

1. Connect the HV relay assembly (battery current sensor) connector.
2. Turn the power switch on (IG).
3. Measure the voltage according to the value(s) in the table below.
   Fig 3: Identifying Battery Smart Unit O1 Connector Terminal Identification

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard voltage

   Tester Connection	Specified Condition
   IB (o1-9) - GIB (o1-20)	2.46 to 2.54 V

   HINT: 

   If the power switch is turned on (IG) with the service plug grip removed, DTC P0A0D-350 for the interlock switch system will be set.

NG → See step   5 

OK → See step   6