Suzuki XL7 2007 Service Manual page 910

1J-17 Charging System:
DTC B1405
Diagnostic Instructions
• Perform the "Diagnostic System Check - Vehicle Diagnostic Information: " prior to using this diagnostic procedure.
• Review "Strategy Based Diagnosis: " for an overview of the diagnostic approach.
• "Diagnostic Procedure Instructions - Vehicle Diagnostic Information: " provides an overview of each diagnostic
category.
DTC Descriptor
DTC B1405: Device Voltage Reference Output 2 Circuit
Diagnostic Fault Information
Circuit
Battery Current Sensor Supply Voltage
Circuit
Battery Current Sensor Signal Circuit
Battery Current Sensor Low Reference
Circuit
Circuit/System Description
The battery current sensor is a 3-wire hall effect current
sensor. The battery current sensor monitors the battery
current. It directly inputs to the body control module
(BCM). It creates a 5-volt pulse width modulation (PWM)
signal of 128 Hz with a duty cycle of 0-100 percent.
Normal duty cycle is between 5-95 percent. Between 0-5
percent and 95-100 percent are for diagnostic purposes.
Conditions for Running the DTC
• The ignition is ON.
• The engine is running.
Conditions for Setting the DTC
The BCM detects a duty cycle of PWM input signal is
less than 4 percent or more than 96 percent for more 33
seconds.
Short to Open/High
Ground Resistance
B1405 B1405
B1405 B1405
— B1405
Action Taken When the DTC Sets
The driver information center (DIC) displays the
SERVICE BATTERY CHARGING SYSTEM warning
message.
Conditions for Clearing the DTC
The DTC clears as current status when the battery
sensed current returns to normal range for more than 5
seconds.
Reference Information
Schematic Reference
"Starting and Charging Schematics: "
Connector End View Reference
"Engine Electrical Connector End Views: "
Description and Operation
"Charging System Description and Operation"
Electrical Information Reference
• "Circuit Testing: "
• "Connector Repairs: "
• "Testing for Intermittent Conditions and Poor
Connections: "
• "Wiring Repairs: "
Signal
Short to Voltage
Performance
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