Chevrolet Trax: DTC B2652
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 Descriptor
DTC B2652 02
Passenger Compartment Dimming 3 Circuit Short to Ground
Diagnostic Fault Information
Circuit/System Description
The instrument panel dimmer switch is used to increase and decrease the
brightness of the interior backlighting
components. The instrument panel dimmer switch provides a voltage signal to the
body control module (BCM)
that will increase as the brightness of the lights are increased and decrease as
the brightness of the lights are
decreased. The BCM provides a low reference signal and B+ to the instrument
panel dimmer switch. When the
instrument panel dimmer switch is placed in the desired position, the dimmed
voltage setting is applied from the
instrument panel dimmer switch through the instrument panel dimmer switch signal
circuit to the BCM. The
BCM interprets the signal and applies a pulse width modulated (PWM) voltage
through the LED dimming
control circuits illuminating the interior backlighting to the requested level
of brightness.
Conditions for Running the DTC
- Battery voltage must be between 9-16 V.
- Park lamps ON.
Conditions for Setting the DTC
The BCM detects a short to ground in the accent lamps control circuit.
Actions Taken When the DTC Sets
The BCM will disable the accent lamps control circuit.
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
Interior Lights Schematics (Encore) , Interior Lights 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
- Interior 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
NOTE:
Each accent lamp may need to be disconnected to isolate the short to
ground. Use the schematic to identify the following:
- All accent lamps equipped with the vehicle
- Component locations on the accent light control circuit
- Each component's control circuit terminals
- Ignition OFF, scan tool disconnected, all doors closed, all accessories
OFF, disconnect the X1 harness
connector at the appropriate E1 Accent Lamp. It may take up to 2 minutes for
all vehicle systems to
power down.
- Test for less than 15 ohms between the ground circuit terminal 1 and
ground.
- Ignition OFF.
- Test for less than 2 ohms in the ground circuit end to end.
- If 2 ohms or greater, repair the open/high resistance in the circuit.
- If less than 2 ohms, repair the open/high resistance in the ground
connection.
- If less than 15 ohms
- Connect a test lamp between the control circuit terminal 2 and ground,
ignition ON.
- Verify the test lamp turns ON and OFF when commanding the Accent
Lighting 1 ON and OFF with a
scan tool.
- If the test lamp is always OFF
- Ignition OFF, disconnect the X6 harness connector at the K9 Body Control
Module.
- Test for infinite resistance between the control circuit 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 K9 Body Control Module.
- If the test lamp is always ON
- Ignition OFF, disconnect the X6 harness connector at the K9 Body Control
Module, ignition ON.
- Test for less than 1 V between the control circuit terminal and ground.
- If 1 V or greater, repair the short to voltage on the circuit.
- If less than 1 V, replace the K9 Body Control Module.
- If the test lamp turns ON and OFF
- Test or replace the appropriate E1 Accent Lamp
Repair Instructions
Perform the Diagnostic Repair Verification after completing the repair.
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:
Special tools
EN-6009 Remover and Installer Ignition Coil
For equivalent regional tools refer to Special Tools .
Removal Procedure
Disconnect the battery negative cable. Refer to Battery Negative Cable
Disconnection and
Connection .
Remove the engine cover. Refer to Refer to Engine Cover Re
Manual Seats
To adjust a manual seat:
Pull the handle at the front of
the seat.
Slide the seat to the desired
position and release the handle.
Try to move the seat back and
forth to be sure it is locked in
place.
Height Adjustment
If available, move the lever up or
down to manually rais