Chevrolet Trax: DTC B2580
Diagnostic Instructions
- Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
- Review Strategy Based Diagnosis for an overview of the diagnostic
approach.
- Diagnostic Procedure Instructions provides an overview of each
diagnostic category.
DTC Descriptors
DTC B2580 01
High Beam Control Circuit Short to Battery
DTC B2580 02
High Beam Control Circuit Short to Ground
DTC B2580 04
High Beam Control Circuit Open
Diagnostic Fault Information
Circuit/System Description
The high beam and flash to pass functions are contained within the turn
signal/multifunction switch. The BCM
provides the turn signal/multifunction switch with two signal circuits, the high
beam signal circuit and the flash
to pass signal circuit. When the low beam headlamps are ON and the turn signal/multifunction
switch is placed in the high beam position, ground is applied to the BCM through
the high beam signal circuit. The BCM
responds to the high beam request by applying ground to the high beam relay
control circuit which energizes
the high beam relay. With the high beam relay energized, the switch contacts
close allowing battery voltage to
flow through the high beam fuses to the high beam control circuits illuminating
the high beam headlamps.
Conditions for Running the DTC
- Battery voltage must be between 9-16 V.
- High beam headlamps ON.
Conditions for Setting the DTC
DTC B2580 01
The BCM detects a short to voltage in the headlamp high beam relay control
circuit.
DTC B2580 02
The BCM detects a short to ground in the headlamp high beam relay control
circuit.
DTC B2580 04
The BCM detects an open in the headlamp high beam relay control circuit.
Actions Taken When the DTC Sets
The high beam headlamps and flash to pass will not operate.
Conditions for Clearing the DTC
- The condition responsible for setting the DTC no longer exists.
- A history DTC will clear once 100 consecutive malfunction-free ignition
cycles have occurred.
Reference Information
Schematic Reference
Headlights/Daytime Running Lights (DRL) Schematics (Encore) ,
Headlights/Daytime Running Lights
(DRL) Schematics (Trax)
Connector End View Reference
WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS -
INDEX - ENCORE WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT
CONNECTOR END VIEWS - INDEX - TRAX
Description and Operation
Exterior Lighting Systems Description and Operation
Electrical Information Reference
- Circuit Testing
- Connector Repairs
- Testing for Intermittent Conditions and Poor Connections
- Wiring Repairs
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Testing
- Ignition OFF, disconnect the X5 harness connector at the K9 Body Control
Module, ignition ON.
- Verify a test lamp illuminates between the control circuit terminal 18
and ground.
- If the test lamp does not illuminate
- Ignition OFF, disconnect the X2 harness connector at the X50A Fuse Block
- Underhood.
- Test for infinite resistance between the control circuit terminal and
ground.
- If less than infinite resistance, repair the short to ground on the
circuit.
- If infinite resistance
- Test for less than 2 ohms in the control circuit end to end.
- If 2 ohms or greater, repair the open/high resistance in the circuit.
- If less than 2 ohms, replace the X50A Fuse Block - Underhood.
- If the test lamp illuminates
- Ignition OFF, connect a 3 A fused jumper between the control circuit
terminal 18 and ground.
- Verify the high beam headlamps illuminate.
- If the high beam headlamps do not illuminate
- Ignition OFF, disconnect the X2 harness connector at the X50A Fuse Block
- Underhood, ignition
ON.
- Test for less than 1 V between the control circuit terminal 18 and
ground.
- If 1 V or greater, repair the short to voltage on the circuit.
- If less than 1 V, replace the X50A Fuse Block - Underhood.
- If the high beam headlamps illuminate
- Test or replace the K9 Body Control Module.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the repair.
- Front Compartment Fuse Block Replacement
- Control Module References for BCM replacement, programming, and setup
READ NEXT:
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic
approach.
Diag
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic
approach.
Diag
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic
approach.
Diag
SEE MORE:
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic
approach.
Diagnostic Procedure Instructions provides an overview of each
diagnostic category.
Diagnostic Fault
CRUISE CONTROL DESCRIPTION AND OPERATION
Cruise Control System Block Diagram
Fig. 4: Identifying Cruise Control System Block Diagram
Cruise control is a speed control system that maintains a desired vehicle
speed under normal driving conditions
at speeds above 40 km/h (25 mph). Steep grades may