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

B → See step   7 

A: Go to next step 

1. Check that the service plug grip is not installed.
   NOTE:

   After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.

2. Remove the front luggage compartment trim cover. Refer to REMOVAL - Step 6 .
3. Remove the No. 4 hybrid battery shield panel.
4. Disconnect only the z8 connector of the battery smart unit.
5. Disconnect the z9 battery current sensor connector from the hybrid battery junction block assembly.
   Fig 1: Identifying z9 Battery Current Sensor Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
6. Measure the resistance according to the value(s) in the tables below.
   Fig 2: Identifying z8 Battery Smart Unit And z9 Hybrid Battery Junction Block Assembly Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance (Check for Open)

   Tester Connection	Switch Condition	Specified Condition
   z8-5 (IB) - z9-3 (IB)	Power switch off	Below 1 Ω
   z8-12 (GIB) - z9-2 (GIB)	Power switch off	Below 1 Ω
   z8-6 (VIB) - z9-1 (VIB)	Power switch off	Below 1 Ω

   Standard Resistance (Check for Short)

   Tester Connection	Switch Condition	Specified Condition
   z8-5 (IB) or z9-3 (IB) - Body ground and other terminals	Power switch off	10 kΩ or higher
   z8-12 (GIB) or z9-2 (GIB) - Body ground and other terminals	Power switch off	10 kΩ or higher
   z8-6 (VIB) or z9-1 (VIB) - Body ground and other terminals	Power switch off	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *a	Rear view of wire harness connector (to Battery Smart Unit)
   *b	Front view of wire harness connector (to Hybrid Battery Junction Block Assembly)

   HINT: 

   Because the battery harness is not available as a supply part, if the harness cannot be repaired, replace the HV battery assembly.

7. Connect the battery smart unit connector.
8. Connect the battery current sensor connector to the hybrid battery junction block assembly.
9. Install the No. 4 hybrid battery shield panel.
10. Install the front luggage compartment trim cover.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Check that the service plug grip is not installed.
   NOTE:

   After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.

2. Remove the front luggage compartment trim cover. Refer to REMOVAL - Step 6 .
3. Connect the cable to the negative (-) auxiliary battery terminal.
4. Turn the power switch on (IG).
5. Measure the voltage according to the value(s) in the table below.
   Fig 3: Identifying z8 Battery Smart Unit Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   z8-6 (VIB) - z8-12 (GIB)	Power switch on (IG)	4.6 to 5.4 V

   TEXT IN ILLUSTRATION
   
   

   *a	Component with harness connected (Battery Smart Unit)

   NOTE:

   Turning the power switch on (IG) with the service grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.

6. Turn the power switch off.
7. Disconnect the cable from the negative (-) auxiliary battery terminal.
8. Install the front luggage compartment trim cover.

NG → See step   6 

OK: Go to next step 

1. Check that the service plug grip is not installed.
   NOTE:

   After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.

2. Remove the front luggage compartment trim cover. Refer to REMOVAL - Step 6 .
3. Connect the cable to the negative (-) auxiliary battery terminal.
4. Turn the power switch on (IG).
5. Measure the voltage according to the value(s) in the table below.
   Fig 4: Identifying z8 Battery Smart Unit Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   z8-5 (IB) - z8-12 (GIB)	Power switch on (IG)	2.46 to 2.54 V

   TEXT IN ILLUSTRATION
   
   

   *a	Component with harness connected (Battery Smart Unit)

   NOTE:

   Turning the power switch on (IG) with the service grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.

6. Turn the power switch off.
7. Disconnect the cable from the negative (-) auxiliary battery terminal.
8. Install the front luggage compartment trim cover.

NG → See step   5 

OK → See step   6