DTC P162B-87: Lost Communication with Battery Monitor Module Missing Message [10/2018 - ]: Procedure

1. Check installation condition of the battery state sensor assembly.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

INSTALL THE BATTERY STATE SENSOR ASSEMBLY CORRECTLY. Refer to  INSTALLATION [10/2018 - ] 

Result: 

OK 

See step  2

1. Check that the battery state sensor assembly connector is securely connected.

   OK

   The connector is securely connected.

2. Disconnect the battery state sensor assembly connector.
3. Check the connector case and terminals for deformation or corrosion.

   OK

   No deformation or corrosion.

4. Measure the voltage according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Battery State Sensor Assembly)

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   N13-1 (+B) - Body ground	Power switch off	11 to 14 V

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  3

1. Disconnect the A46 hybrid vehicle control ECU connector.
2. Disconnect the N13 battery state sensor assembly connector.
3. Disconnect the C48 compressor with motor assembly connector.
4. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   A46-8 (LIN3) - N13-2 (LIN)	Always	Below 1 Ω

   Standard Resistance (Check for Short)

   Tester Connection	Condition	Specified Condition
   N13-2 (LIN), A46-8 (LIN3) or C48-3 (DOUT) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  4

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
5. Check for DTCs, and note down any DTCs that are output.

   Refer to DTC CHECK / CLEAR [10/2018 - ]

   Powertrain > Hybrid Control > Trouble Codes 

6. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
7. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [10/2018 - ]

   Powertrain > Hybrid Control > Clear DTCs 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  5

1. Turn the power switch on (IG).
2. Turn the Techstream on.
3. Enter the following menus: Body Electrical / Air Conditioner / Trouble Codes.
4. Check for DTCs, and note down any DTCs that are output.

   Refer to DTC CHECK / CLEAR [10/2018 - ]

   Body Electrical > Air Conditioner > Trouble Codes 

5. Enter the following menus: Body Electrical / Air Conditioner / Trouble Codes.
6. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [10/2018 - ]

   Body Electrical > Air Conditioner > Clear DTCs 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  6

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (READY) and wait for 17 minutes or more.
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
5. Check for DTCs.

   Refer to DTC CHECK / CLEAR [10/2018 - ]

   Powertrain > Hybrid Control > Trouble Codes 

   Result

   Result	Proceed to
   DTC P162B-87 is output.	A
   DTCs are not output.	B

Result: 

B 

CHECK FOR INTERMITTENT PROBLEMS. Refer to  CHECK FOR INTERMITTENT PROBLEMS [10/2018 - ] 

Result: 

A 

See step  7

1. Enter the following menus: Body Electrical / Air Conditioner / Trouble Codes.
2. Check for DTCs when the following conditions are met.

   Refer to DTC CHECK / CLEAR [10/2018 - ]

   Body Electrical > Air Conditioner > Trouble Codes 

   Result

   Result	Proceed to
   DTC B1498 is output.	A
   DTCs are not output.	B

Result: 

A 

REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  REMOVAL [10/2018 - 07/2022]  , or refer to  REMOVAL [07/2022 - ] 

Result: 

B 

REPLACE BATTERY STATE SENSOR ASSEMBLY. Refer to  REMOVAL [10/2018 - 07/2022]  , or refer to  REMOVAL [07/2022 - ]