DTC P058A-01: Auxiliary Battery Monitor Module General Electrical Failure: Notes

WARNING: This page is about a different variant/trim than selected.

1. -

Outline of diagnosis:

Any of the following conditions is met with the power switch on (IG). (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 (12V) temperature is 105°C (221°F) or more or -40°C (-40°F) 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 (12V) state sensor internal memory (battery identification data).

Trouble symptom:

DC/DC Converter command fixed

Wiring diagram:

Charging system Ref. to WIRING SYSTEM (CROSSTREK MODEL (HEV))>CHARGING SYSTEM>WIRING DIAGRAM .

G13617942

Courtesy of SUBARU OF AMERICA, INC.

CAUTION: Before performing diagnosis, refer to "CAUTION" in "General Description". Ref. to P-HEV HYBRID POWERTRAIN CONTROL (DIAGNOSTICS)>GENERAL DESCRIPTION>CAUTION .

NOTE:

Before performing diagnosis, check the fuse in this circuit. Ref. to HYBRID ELECTRIC VEHICLE>RELAY AND FUSE .
When DTC P162B87 is detected simultaneously, perform the diagnosis for P162B87 first. Ref. to P-HEV HYBRID POWERTRAIN CONTROL (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC P162B87 LOST COMMUNICATION WITH AUXILIARY BATTERY MONITOR MODULE MISSING MESSAGE .

G13617943

Courtesy of SUBARU OF AMERICA, INC.

CHECK INSTALLATION CONDITION OF Battery (12V) sensor .
Check the installation condition of Battery (12V) sensor. Ref. to STARTING/CHARGING SYSTEMS (H4DO (HEV))>BATTERY SENSOR .

Is Battery (12V) sensor securely installed?

Yes : Go to 2.

No : Securely install Battery (12V) sensor.
CHECK CONNECTION CONDITION OF CONNECTOR (Battery (12V) sensor CONNECTOR) .
Check the connecting condition of connector in Battery (12V) sensor and check the relevant terminals for contact pressure, deformation and intrusion of water or foreign matter. Ref. to STARTING/CHARGING SYSTEMS (H4DO (HEV))>BATTERY SENSOR .

Is there looseness at the connector connection, or any poor contact, deformation or intrusion of water or foreign matters at the relevant terminals?

Yes : Connect the connector securely. Or repair the poor contact of connector.

No : Go to 3.
CHECK Wire harness AND CONNECTOR (Battery (12V) sensor - Battery (12V)) .
1. Turn the ignition switch to OFF.
2. Disconnect the Battery (12V) sensor connector.
3. Using a tester, measure the voltage between Battery (12V) sensor connector and chassis ground.
  Connector & terminal
  
  (B9) No. 1 (+) - Chassis ground (-):
Is the voltage 11 - 14 V?

Yes : Replace Battery (12V) sensor. Ref. to STARTING/CHARGING SYSTEMS (H4DO (HEV))>BATTERY SENSOR .

No : Repair or replace Wire harness between Battery (12V) sensor connector and chassis ground.