DTC P162B-87: Lost Communication with Battery Monitor Module Missing Message [11/2016 - ]: Procedure

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

   Proceed to
   OK
   NG

Result: 

NG 

INSTALL THE BATTERY STATE SENSOR ASSEMBLY CORRECTLY.  Refer to INSTALLATION [11/2016 - ] .

Result: 

OK 

Go to next step 

1. Check the charging system.

   Refer to ON-VEHICLE INSPECTION [11/2016 - ] .

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE CHARGING SYSTEM 

Result: 

OK 

Go to next step 

1. Disconnect the C1 ECM connector.
2. Disconnect the C83 battery state sensor assembly connector.
3. Disconnect the C81 generator assembly connector.
4. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   C83-2 (LIN) or C81-2 (LIN) - C1-135 (LIN)	Always	Below 1 Ω
   C83-2(LIN), C81-2 (LIN) or C1-135 (LIN) - Body ground	Always	10 kΩ or higher

Result: 

NG 

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

Result: 

OK 

Go to next step 

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

   OK

   The connector is securely connected.

2. Disconnect the C83 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	Condition	Specified Condition
   C83-1 (+B) - Body ground	Always	11 to 14 V

Result: 

NG 

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

Result: 

OK 

Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine / Trouble Codes.
5. Check for DTCs, and note down any DTCs that are output.

   Powertrain > Engine > Trouble Codes 

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

   Powertrain > Engine > Clear DTCs 

8. Turn the ignition switch off and wait for 30 seconds.

NEXT 

Go to next step 

1. Connect the Techstream to the DLC3.
2. Start the engine.
3. Allow the engine to idle for approximately 17 minutes or more.
4. Turn the Techstream on.
5. Enter the following menus: Powertrain / Engine / Trouble Codes.
6. Check for DTCs.

   Powertrain > Engine > Trouble Codes 

   Result	Proceed to
   Only DTC P162B87 is output.	A
   DTC P161A87 and P162B87 are output.	B
   DTCs are not output.	C

Result: 

A 

REPLACE BATTERY STATE SENSOR ASSEMBLY.  Refer to REMOVAL [11/2016 - ] .

Result: 

B 

REPLACE ECM.  Refer to REMOVAL [11/2016 - ] .

Result: 

C 

CHECK FOR INTERMITTENT PROBLEMS.  Refer to CHECK FOR INTERMITTENT PROBLEMS [11/2016 - ] .