DTC P162B-87: Lost Communication with Battery Monitor Module Missing Message [08/2023 - ]: Procedure

HINT: 

Refer to INSTALLATION [08/2023 - ]

Result

Result: 

NG 

INSTALL BATTERY STATE SENSOR ASSEMBLY CORRECTLY. Refer to  INSTALLATION [08/2023 - ] 

Result: 

OK 

See step  2

HINT: 

Refer to the electronic circuit inspection procedure.

Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE [10/2022 - ]

Pre-procedure1

• Turn the ignition switch off.
• Check that the battery state sensor assembly connector is securely connected.

  OK

  The connector is securely connected.

• Disconnect the H37 battery state sensor assembly connector.
• Check the connector case and terminals for deformation or corrosion.

  OK

  No deformation or corrosion.

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

  Standard Voltage

  Tester Connection	Condition	Specified Condition	Result
  H37-3 (+B) - Body ground	Always	11 to 14 V	V

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY STATE SENSOR ASSEMBLY - AUXILIARY BATTERY) 

Result: 

OK 

See step  3

HINT: 

Refer to the electronic circuit inspection procedure.

Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE [10/2022 - ]

Pre-procedure1

• Disconnect the A21 hybrid vehicle control ECU connector.
• Disconnect the H37 battery state sensor assembly connector.
• Disconnect the B35 compressor with motor assembly connector.

• Measure the resistance according to the value(s) in the table below.

  Standard Resistance

  Tester Connection	Condition	Specified Condition	Result
  A21-16 (LIN3) - H37-2 (LIN)	Always	Below 1 Ω	Ω
  A21-16 (LIN3), H37-2 (LIN) or B35-3 (DOUT) - Body ground	Always	10 kΩ or higher	kΩ

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR (HYBRID VEHICLE CONTROL ECU - BATTERY STATE SENSOR ASSEMBLY) 

Result: 

OK 

See step  4

1. Check for DTCs, and note down any DTCs that are output.

   Powertrain > Hybrid Control > Trouble Codes 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  5

Pre-procedure1

• None

• Clear the DTCs.

  Powertrain > Hybrid Control > Clear DTCs 

  Result

  Proceed to
  NEXT

Post-procedure1

• Turn the ignition switch off and wait for 30 seconds or more.

Result: 

NEXT 

See step  6

1. Check for DTCs, and note down any DTCs that are output.

   Body Electrical > Air Conditioner > Trouble Codes 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  7

Pre-procedure1

• None

• Clear the DTCs.

  Body Electrical > Air Conditioner > Clear DTCs 

  Result

  Proceed to
  NEXT

Post-procedure1

• Turn the ignition switch off and wait for 30 seconds or more.

Result: 

NEXT 

See step  8

Pre-procedure1

• Turn the ignition switch to ON (READY) and wait for 17 minutes or more.

• Check for DTCs.

  Powertrain > Hybrid Control > Trouble Codes 

  Result

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

Post-procedure1

• None

Result: 

B 

CHECK FOR INTERMITTENT PROBLEMS 

Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE [10/2022 - ]

Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - ]

Result: 

A 

See step  9

1. Check for DTCs.

   Body Electrical > Air Conditioner > Trouble Codes 

   Result

   Result	Proceed to
   B1498-87 is output	A
   DTCs are not output	B

Result: 

A 

REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY. Refer to  REMOVAL [10/2022 - ] 

Result: 

B 

REPLACE BATTERY STATE SENSOR ASSEMBLY. Refer to  REMOVAL [08/2023 - ]