Honda HR-V: Battery Management System - General Information
DESCRIPTION
12 VOLT BATTERY MANAGEMENT SYSTEM DESCRIPTION - COMPONENTS
12 Volt Battery Sensor
The 12 volt battery sensor is located between the 12 volt battery negative pole and the 12 volt battery ground cable.
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12 VOLT BATTERY MANAGEMENT SYSTEM DESCRIPTION - CONTROL/FUNCTION
The 12 volt battery sensor measures voltage, sensor temperature, and charge/discharge currents. According to these readings, 12 volt battery fluid temperature, internal resistance and state of charge are sent as signals from the 12 volt battery to the gauge control module.
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After turning the vehicle to the OFF mode, the 12 volt battery sensor observes the charge state of the 12 volt battery. When a designated threshold is reached, a signal is sent through the LIN circuit interface and displayed on the gauge control module. As a result, the sensor can alert the driver of over discharge condition when in the ACCESSORY position or automatically switch off room lamps through the MICU.
12 VOLT BATTERY MANAGEMENT SYSTEM DESCRIPTION - OVERVIEW
The 12 volt battery management system consists of the 12 volt battery sensor, the gauge control module, and the MICU. The 12 volt battery sensor measures current, voltage, and temperature values of the 12 volt battery. This data is used to control the interior lights.
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With moonroof
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Without moonroof
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12 VOLT BATTERY MANAGEMENT SYSTEM DESCRIPTION - SYSTEM DIAGRAM
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CIRCUIT DIAGRAM
12 VOLT BATTERY MANAGEMENT SYSTEM CIRCUIT DIAGRAM
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Fig. 1: 12 Volt Battery Management System Circuit Diagram
COMPONENT LOCATION INDEX
12 VOLT BATTERY MANAGEMENT SYSTEM COMPONENT LOCATION INDEX
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With moonroof
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Without moonroof
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Charging System - Service Information
REMOVAL & INSTALLATION
ALTERNATOR REMOVAL AND INSTALLATION
Removal and Installation
1. 12 Volt Battery Terminal - Disconnect
2. Drive Belt - Remove
3. Positive Cable and Connector (Alternator) - D
Inspection & Adjustment
DRIVE BELT AUTO-TENSIONER INSPECTION
Inspection
1. Drive Belt Auto-Tensioner - Position Check
Turn the vehicle to the ON mode, and make sure to turn the A/C switch
OFF, then turn
the vehicle to
SEE MORE:
DTC B12D0, B12D1, B12D2
NOTE: Refer to the DTC code shown on the display, and then inspect the
connectors and terminals based on
the instructions in the table below.
DTC (Power Control Unit)
NOTE:
If you are troubleshooting multiple DTCs, be sure to follow the
instructions in B-CAN System Diagnosis
Test Mode A - Ref
Front Fog Light Bulb Removal and Installation
Removal & Installation
1. Front Inner Fender - Remove
Remove the front inner fender as needed - Refer to: Front Inner Fender
Removal and
Installation, or Rear Inner Fender Removal and Installation.
2. Front Fog Light Bulb - Remove
Disconnect the connector
Turn the bulb (A) 45º count
