Chevrolet Trax: DTC B316B, B317A, B318A, OR B319A (AXG, AED, AEQ): Window switch
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 B316B
Driver Window Switch
DTC B317A
Passenger Window Switch
DTC B318A
Left Rear Window Switch
DTC B319A
Right Rear Window Switch
For symptom byte information refer to: Symptom Byte List
Diagnostic Fault Information
Circuit/System Description
The driver window motor supplies 12V signal circuits to the driver window
switch, when a window switch has
been activated, a switch closes providing a ground to the appropriate signal
circuit causing the voltage to drop
to 0V. The driver window motor will detect the voltage drop in the signal
circuit and will command the window to move in the desired
direction.
The driver window master control switch also contains control switches for the
passenger, left rear and right
rear window functions. When a window switch is pressed, a serial data message is
sent to the body control
module (BCM). The BCM examines the request and checks for messages from other
power window motors that
may prohibit window movement. If no prohibitive messages have been received, the
BCM will send a serial
data message to the appropriate passenger or rear window switch which will
perform the command as
requested.
Conditions for Running the DTC
Battery voltage must be between 9-16 V.
Conditions for Setting the DTC
B316B 00
The BCM has detected a control switch on the driver window master switch has
been active for greater than 60
seconds.
B316B 02
The driver window motor has detected the driver window master switch is
active for greater than 60 seconds.
B316B 39
The driver window motor has detected an internal failure within the driver
window switch
B317A 02
The BCM has detected the passenger window switch is active for greater than
60 seconds.
B317A 39
The BCM has detected an internal failure within the passenger window switch
B318A 02
The BCM has detected the left rear window switch is active for greater than
60 seconds
B318A 39
The BCM has detected an internal failure within the left rear window switch
B319A 02
The BCM has detected the right rear window switch is active for greater than
60 seconds
B319A 39
The BCM has detected an internal failure within the right rear window switch
Action Taken When the DTC Sets
The affected power window will malfunction
Conditions for Clearing the DTC
B316B 00, B316B 02, B317A 02, B318A 02, B319A 02
- The DTC will be current for as long as the fault is present.
- The DTC will change from current to history when the fault is no longer
present.
- A history DTC will clear after 100 consecutive ignition cycles if the
condition for the malfunction is no
longer present.
B316B 39, B317A 39, B318A 39, B319A 39
If the DTC is current, the affected window switch must be replaced before the
DTC can be cleared.
Reference Information
Schematic Reference
Moveable Window Schematics (Encore), Moveable Window 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
Power Windows 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 Verification
- Ignition ON.
- Verify the scan tool parameters listed below change when pressing and
pulling the switches for the
passenger, left rear and right rear window on the driver window master
control;
- Left Rear Main Control Down Switch - Inactive and Active
- Left Rear Main Control Express Switch - Inactive and Active
- Left Rear Main Control Up Switch - Inactive and Active
- Right Rear Main Control Down Switch - Inactive and Active
- Right Rear Main Control Express Switch - Inactive and Active
- Right Rear Main Control Up Switch - Inactive and Active
- Front Passenger Main Control Down Switch - Inactive and Active
- Front Passenger Main Control Express Switch - Inactive and Active
- Front Passenger Main Control Up Switch - Inactive and Active
- If any parameter does not change
Replace the S79D Window Switch-Driver.
If the parameters change
- Verify the scan tool parameters listed below change when pressing and
pulling the driver window control
switch on the driver window master control:
- Driver Window Main Control Down Switch - Inactive and Active
- Driver Window Main Control Up Switch - Inactive and Active
- Driver Window Main Control Express Switch - Inactive and Active
- If any parameter does not change
Refer to Circuit/System Testing.
If all the parameters change
- Verify the scan tool parameters listed below change when pressing and
pulling the S79P Window Switch-
Passenger, the S79LR Window Switch-Left Rear and the S79RR Window
Switch-Right Rear.
- Passenger Window Switch at Door - Inactive, Up, Down, Express Down
- Left Rear Window Switch at Door - Inactive, Up, Down, Express Down
- Right Rear Window Switch at Door - Inactive, Up, Down, Express Down
- If any parameter does not change
Test or replace the appropriate passenger or rear S79 Window Switch
- If all the parameters change
- All OK.
Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the S79D Window
Switch-Driver, ignition ON
- Verify the scan tool Driver Window Main Control Down Switch parameter is
Inactive.
If not Inactive
- Ignition OFF, disconnect the harness connector at the M74D Window
Motor-Driver.
- Test for infinite resistance between the S79D Window Switch-Driver
signal circuit terminal 3 and
ground.
- If less than infinite resistance, repair the short to ground on the
circuit.
- If infinite resistance, replace the M74D Window Motor-Driver.
If Inactive
- Install a 3 A fused jumper wire between the signal circuit terminal 3
and ground.
- Verify the scan tool Driver Window Main Control Down Switch parameter is
Active
If not Active
- Ignition OFF, disconnect the harness connector at the M74D Window
Motor-Driver, ignition ON.
- Test for less than 1 V between the S79D Window Switch-Driver signal
circuit terminal 3 and
ground.
- If 1 V or greater, repair the short to voltage on the circuit.
- If less than 1 V
- Ignition OFF, test for less than 2 ohms in the signal circuit end to end.
- If 2 ohms or greater, repair the open/high resistance in the circuit.
- If less than 2 ohms, replace the M74D Window Motor-Driver.
- If Active
- Verify the scan tool Driver Window Main Control Up Switch parameter is
Inactive.
If not Inactive
- Ignition OFF, disconnect the harness connector at the M74D Window
Motor-Driver.
- Test for infinite resistance between the S79D Window Switch-Driver
signal circuit terminal 6 and
ground.
- If less than infinite resistance, repair the short to ground on the
circuit.
- If infinite resistance, replace the M74D Window Motor-Driver.
- If Inactive
- Install a 3 A fused jumper wire between the signal circuit terminal 6
and ground.
- Verify the scan tool Driver Window Main Control Up Switch parameter is
Active
- Ignition OFF, disconnect the harness connector at the M74D Window
Motor-Driver, ignition ON.
- Test for less than 1 V between the S79D Window Switch-Driver signal
circuit 6 and ground.
- If 1 V or greater, repair the short to voltage on the circuit.
- If less than 1 V
- Ignition OFF, test for less than 2 ohms in the signal circuit end to end.
- If 2 ohms or greater, repair the open/high resistance in the circuit.
- If less than 2 ohms, replace the M74D Window Motor-Driver.
- If Active
- Verify the scan tool Driver Window Main Control Express Switch parameter
is Inactive.
If not Inactive
- Ignition OFF, disconnect the harness connector at the M74D Window
Motor-Driver.
- Test for infinite resistance between the S79D Window Switch-Driver
signal circuit terminal 2 and
ground.
- If less than infinite resistance, repair the short to ground on the
circuit.
- If infinite resistance, replace the M74D Window Motor-Driver.
- If Inactive
- Install a 3 A fused jumper wire between the signal circuit terminal 2
and ground.
- Verify the scan tool Driver Window Main Control Express Switch parameter
is Active
If not Active
- Ignition OFF, disconnect the harness connector at the M74D Window
Motor-Driver, ignition ON.
- Test for less than 1 V between the S79D Window Switch-Driver signal
circuit 2 and ground.
- If 1 V or greater, repair the short to voltage on the circuit.
- If less than 1 V
- Ignition OFF, test for less than 2 ohms in the signal circuit end to end.
- If 2 ohms or greater, repair the open/high resistance in the circuit.
- If less than 2 ohms, replace the M74D Window Motor-Driver.
- If Active
- Test or replace the S79D Window Switch-Driver.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the repair.
- Rear Side Door Window Switch Replacement
- Front Side Door Window Regulator Motor Replacement
- Front Side Door Window Switch Replacement (Driver Side, Encore),
Front Side Door Window
Switch Replacement (Passenger Side, Encore), Front Side Door Window Switch
Replacement
(Driver Side, Trax), Front Side Door Window Switch Replacement (Passenger
Side, Trax)
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:
When securing a child restraint in a
rear seating position, study the
instructions that came with the child
restraint to make sure it is
compatible with this vehicle.
If the child restraint has the LATCH
system, see Lower Anchors and
Tethers for Children (LATCH
System) on page 3-50 for how and
wher
Special Tools
CH-41013 Rotor Resurfacing Kit
CH-42450-A Wheel Hub Resurfacing Kit
For equivalent regional tools, refer to Special Tools.
Removal Procedure
WARNING: Refer to Brake Dust Warning .
Release the park brake.
Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle
.