RM36D0EC _57 Power Source / Network _087045 M20C-FKS BATTERY / CHARGING _0418150 CHARGING SYSTEM C

M20C-FKS BATTERY / CHARGING  CHARGING SYSTEM  P058A01  Battery Monitor Module General Electrical Failure  


DESCRIPTION

The battery state sensor assembly detects the voltage, current and temperature of the battery. The battery state sensor assembly calculates State of Charge (SOC) based on the voltage and current of the battery and sends it to the ECM. Based on the signals received, the ECM adjusts the charging voltage of the generator assembly.

The battery state sensor assembly calculates the battery temperature based on changes in resistance of a built-in thermistor and sends it to the ECM. The ECM reduces the amount of charging current based on this signal in order to protect the battery.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Memory Note
P058A01 Battery Monitor Module General Electrical Failure Any of the following conditions is met with the ignition switch ON. (1 trip detection logic):
·

Current is 999.939 A or more, or -1000 A or less for 3.2 seconds or more.

·

The difference between the maximum and minimum current is 0.0305 A or less for 100 seconds or more.

·

A current detection circuit malfunction signal is received.

·

The battery temperature is 105°C or more or -40°C or less for 3.2 seconds or more.

·

A temperature detection circuit malfunction signal is received.

·

Voltage is 15.98 V or more, or 6.0 V or less for 3.2 seconds or more.

·

A voltage detection circuit malfunction signal is received.

·

A writing error occurs in the battery state sensor internal memory (battery identification data).


·

Battery state sensor assembly

·

Battery

·

Wire harness or connector


Charge warning light does not come on DTC stored SAE: P058A

DTC Detection Conditions
Vehicle Condition
Pattern 1 Pattern 2 Pattern 3 Pattern 4 Pattern 5 Pattern 6
Diagnosis Condition Ignition switch ON ○ ○ ○ ○ ○ ○
Malfunction Status Current value is 999.939 A or more ○ - - - - -
Current value is -1000 A or less - ○ - - - -
Difference between maximum and minimum current value is 0.0305 A or less - - ○ - - -
Current detection circuit malfunction signal is received - - - ○ - -
Battery temperature is 105°C or more - - - - ○ -
Battery temperature is -40°C or less - - - - - ○
Detection Time 3.2 seconds or more 3.2 seconds or more 100 seconds or more - 3.2 seconds or more 3.2 seconds or more
Number of Trips 1 trip 1 trip 1 trip 1 trip 1 trip 1 trip

DTC Detection Conditions
Vehicle Condition
Pattern 7 Pattern 8 Pattern 9 Pattern 10 Pattern 11
Diagnosis Condition Ignition switch ON ○ ○ ○ ○ ○
Malfunction Status Temperature detection circuit malfunction signal is received ○ - - - -
Voltage value remains at 15.98 V or more - ○ - - -
Voltage value remains at 6.0 V or less - - ○ - -
Voltage detection circuit malfunction signal is received - - - ○ -
Writing error occurs in the battery state sensor internal memory (battery identification data) - - - - ○
Detection Time - 3.2 seconds or more 3.2 seconds or more - -
Number of Trips 1 trip 1 trip 1 trip 1 trip 1 trip

HINT:

DTC will be output when conditions for either of the patterns in the table above are met.


WIRING DIAGRAM

A392149E29
2.458,1.042 2.625,1.292 0.167,0.25 10 false 3 4.031,1 4.25,1.25 0.219,0.25 10 false 2 4.896,1.01 5.115,1.26 0.219,0.25 10 false 90 5.104,1.177 5.438,1.427 0.333,0.25 10 false LIN 5.5,3.135 5.833,3.385 0.333,0.25 10 false C71 5.479,3.292 5.896,3.542 0.417,0.25 10 false ECM 2.302,1.667 2.719,1.917 0.417,0.25 10 false A128 2.302,1.833 4.385,2.083 2.083,0.25 10 false Battery State Sensor Assembly 0.729,3.281 2.563,3.531 1.833,0.25 10 false : LIN Communication Line 0.531,1.146 1.448,1.396 0.917,0.25 10 false from Battery 1.615,1.302 2.198,1.552 0.583,0.25 10 false BATT-S 2.615,1.156 2.948,1.406 0.333,0.25 10 false +B 3.74,1.177 4.073,1.427 0.333,0.25 10 false LIN

CAUTION / NOTICE / HINT

NOTICE:
·

Inspect the fuses for circuits related to this system before performing the following procedure.

·

When P162B87 (Lost Communication with Battery Monitor Module Missing Message) is output at the same time, perform the inspection for P162B87 (Lost Communication with Battery Monitor Module Missing Message) first.

Click herePower Source / Network>M20C-FKS (BATTERY / CHARGING)>CHARGING SYSTEM>P162B87



PROCEDURE

1.CHECK BATTERY STATE SENSOR ASSEMBLY INSTALLATION CONDITION
a.

Check installation condition of the battery state sensor assembly.


Result:
Proceed to
OK
NG



OK

2.CHECK CHARGING SYSTEM

NG

INSTALL THE BATTERY STATE SENSOR ASSEMBLY CORRECTLY

Click herePower Source / Network>M20C-FKS (BATTERY / CHARGING)>BATTERY CURRENT SENSOR>INSTALLATION


2.CHECK CHARGING SYSTEM
a.

Check the charging system.

Click herePower Source / Network>M20C-FKS (BATTERY / CHARGING)>CHARGING SYSTEM>ON-VEHICLE INSPECTION


Result:
Proceed to
OK
NG



OK

3.CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)

NG

REPAIR OR REPLACE CHARGING SYSTEM

3.CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)
a.

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

OK:

The connector is securely connected.



b.

Disconnect the battery state sensor assembly connector.


c.

Check the connector case and terminals for deformation or corrosion.

OK:

No deformation or corrosion.



d.
A566365C01
1.51,0.125 2,0.417 0.49,0.292 2.448,1.854 1.948,1.208 false 0.188,0.125 0.5,0.323 0.313,0.198 10 false *a 2.385,1.865 2.698,2.063 0.313,0.198 10 false +B 1.594,0.167 2.208,0.365 0.615,0.198 10 false A128
*a Front view of wire harness connector
(to Battery State Sensor Assembly)


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

Standard Voltage:
Tester Connection Condition Specified Condition
A128-3 (+B) - Body ground Always 11 to 14 V



Result:
Proceed to
OK
NG



OK

REPLACE BATTERY STATE SENSOR ASSEMBLY

Click herePower Source / Network>M20C-FKS (BATTERY / CHARGING)>BATTERY CURRENT SENSOR>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR