The ECM communicates with the battery state sensor assembly via LIN communication. If a LIN communication error is detected, the ECM stores this DTC.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Warning Indicate | Note |
|---|---|---|---|---|---|
| P162B87 | Lost Communication with Battery Monitor Module Missing Message | Battery state sensor assembly or ECM communication stops for approximately 17 minutes or more with the ignition switch ON
(1 trip detection logic) |
·
Wire harness or connector ·
Battery state sensor assembly ·
ECM |
Charge warning light does not come on | SAE Code: P162B |
Refer to the wiring diagram for the P161A87.
Inspect the fuses for circuits related to this system before performing the following procedure.
Before replacing the ECM, refer to Service Bulletin.
Check installation condition of the battery state sensor assembly.
| Result |
|---|
| OK |
| NG |
OK
NG
| Result |
|---|
| OK |
| NG |
OK
NG
Disconnect the ECM connector.
Disconnect the battery state sensor assembly connector.
Disconnect the generator assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
|
Click Location & Routing(A101,C83,C115)Location & Routingewd_type=routing;type=c,c,c;code=A101,C83,C115 Click Connector(A101)Engine Compartment>Engine Room Main Wire / Transmission Wire>Battery State Sensor Assemblyewd_type=component;type=c;code=A101;pinno=2 Click Connector(C83)Engine Compartment>Engine Wire>Generator Assemblyewd_type=component;type=c;code=C83;pinno=2 Click Connector(C115)Engine Compartment>Engine Wire>ECMewd_type=component;type=c;code=C115;pinno=90 |
||
| A101-2 (LIN) or C83-2 (LIN) - C115-90 (LIN) | Always | Below 1 Ω |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
|
Click Location & Routing(A101,C83,C115)Location & Routingewd_type=routing;type=c,c,c;code=A101,C83,C115 Click Connector(A101)Engine Compartment>Engine Room Main Wire / Transmission Wire>Battery State Sensor Assemblyewd_type=component;type=c;code=A101;pinno=2 Click Connector(C83)Engine Compartment>Engine Wire>Generator Assemblyewd_type=component;type=c;code=C83;pinno=2 Click Connector(C115)Engine Compartment>Engine Wire>ECMewd_type=component;type=c;code=C115;pinno=90 |
||
| A101-2 (LIN), C83-2 (LIN) or C115-90 (LIN) - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Check that the battery state sensor assembly connector is securely connected.
The connector is securely connected.
Disconnect the battery state sensor assembly connector.
Check the connector case and terminals for deformation or corrosion.
No deformation or corrosion.
Measure the voltage according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
|
Click Location & Routing(A101)Location & Routingewd_type=routing;type=c;code=A101 Click Connector(A101)Engine Compartment>Engine Room Main Wire / Transmission Wire>Battery State Sensor Assemblyewd_type=component;type=c;code=A101;pinno=3 |
||
| A101-3 (+B) - Body ground | Always | 11 to 14 V |
| Result |
|---|
| OK |
| NG |
OK
NG
Check for DTCs, and note down any DTCs that are output.
Clear the DTCs.
Turn the ignition switch off, wait 30 seconds.
| Proceed to |
|---|
| NEXT |
NEXT
Allow the engine to idle for approximately 17 minutes or more.
Check for DTCs.
| Result | Proceed to |
|---|---|
| Only DTC P162B87 is output | A |
| DTC P161A87 and P162B87 are output. | B |
| DTCs are not output. | C |
A
B
C