Chevrolet Trax: Symptoms - wiper/washer systems
NOTE: The following steps must be completed before using the
symptom tables:
- Perform Diagnostic System Check - Vehicle , in order to verify that all
of the following conditions are
true:
- No DTCs are set.
- The control modules can communicate via the serial data link.
- Refer to Wiper/Washer System Description and Operation in order to
familiarize yourself with the
system functions.
Visual/Physical Inspection
Intermittent
Faulty electrical connections or wiring may be the cause of intermittent
conditions. Refer to Testing for
Intermittent Conditions and Poor Connections
Symptom List
Refer to a symptom diagnostic procedure from the following list in order to
diagnose the symptom:
- Windshield Wiper System Malfunction
- Washer Malfunction
- Rear Washer System Malfunction
- Rear Wiper System Malfunction
- Rain Sensor Malfunction
WINDSHIELD WIPER SYSTEM MALFUNCTION
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 B3715
Windshield Wiper Relay Circuit
DTC B3875
Windshield Wiper High Speed Relay Circuit
For symptom byte information, refer to Symptom Byte List .
Diagnostic Fault Information
Circuit/System Description
The body control module (BCM) controls the windshield wiper motor based on
inputs from the windshield
wiper/washer switch. The BCM monitors the windshield wiper/washer switch through
two separate signal
circuits and a low reference circuit. The windshield wiper/washer switch uses a
resistor ladder to determine low
speed and intermittent operation. The BCM monitors applies and monitors voltage
on the windshield wiper
switch signal circuit. When the wiper switch is placed in the low speed or
intermittent position, the voltage is
pulled down through a different resistor in the resistor ladder, reducing the
voltage seen at the BCM. The BCM
will respond by commanding on the low speed or intermittent wipers. The high
speed wipers are controls
through a discrete signal circuit. With the windshield wiper/washer switch is in
the high speed position, the
windshield wiper high speed switch signal circuit is pulled directly to ground.
The BCM will respond by
commanding on the high speed wipers.
The windshield wiper motor is controlled by the BCM through the windshield wiper
replay and the windshield
wiper speed control relay. A constant and ground is supplied to the rear wiper
motor. When low speed
windshield wiper operation is requested, the BCM will apply voltage to the
windshield wiper relay control
circuit. This will cause the contacts in the windshield wiper relay to close and
apply B+ to the windshield wiper
motor through the windshield wiper low speed control circuit, enabling low speed
wiper operation. When high
speed windshield wiper operation is requested, the BCM continues to apply
voltage to the windshield wiper
relay control circuit and also applies ground to the windshield wiper speed
control relay control circuit. This
will cause the contacts in the windshield wiper speed control relay to close and
apply B+ to the windshield
wiper motor through the windshield wiper high speed control circuit, enabling
high speed wiper operation.
When the windsheild wiper request is no longer present, the contacts in the
windshield wiper relay and
windshield wiper speed control relay will open, removing B+ from the wiper motor
control circuits. The
windshield wiper motor will continue to operate using a discrete B+ circuit
provided by the BCM until the
wipers are in the park position.
Conditions for Running the DTC
- A wiper output is actively being requested by the BCM.
- The system voltage is between 9-16 V.
Conditions for Setting the DTC
B3715 01
A short to voltage is detected in the windshield wiper relay control circuit.
B3715 02
A short to ground is detected in the windshield wiper relay control circuit.
B3715 04
An open or high resistance is detected in the windshield wiper relay control
circuit.
B3875 01
A short to voltage is detected in the windshield wiper high speed relay
control circuit.
A short to ground is detected in the windshield wiper high speed relay
control circuit.
A short to ground is detected in the windshield wiper high speed relay
control circuit.
B3875 04
An open or high resistance is detected in the windshield wiper high speed
relay control circuit.
Action Taken When the DTC Sets
The BCM will not activate the wiper output.
Conditions for Clearing the DTC
- A current DTC will clear when the condition for setting the fault is no
longer present.
- A history DTC will clear after 50 consecutive ignition cycles without a
fault present.
Reference Information
Schematic Reference
Wiper/Washer Schematics (Encore), Wiper/Washer 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
Wiper/Washer System 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 Windshield Wiper Switch parameter changes between
Off and Low when activating
the low speed windshield wipers.
- If the parameter does not change
Refer to Circuit/System Testing - Windshield Wiper/Washer Switch Malfunction.
- Verify the scan tool Windshield Wiper Switch parameter changes between
Delay 1 and Delay 5 when
cycling the intermittent speed windshield wipers.
- If the parameter does not change
Test or replace the S82 Windsheild Wiper/Washer Switch.
- Verify the scan tool Windshield Wiper High Speed Switch parameter
changes between Active and
Inactive when activating the high speed windshield wipers.
- If the parameter does not change
Refer to Circuit/System Testing - Windshield Wiper/Washer Switch Malfunction.
- Verify the M75 Windshield Wiper Motor changes between Off, Low, and High
when cycling the S82
Windshield Wiper/Washer Switch between Off, Low, and High.
- If the Windshield Wiper Motor does not cycle between Off, Low, and
High
Refer to Circuit/System Testing - Windshield Wiper Motor Malfunction
- If the Windshield Wiper Motor cycles between Off, Low, and High
- Ignition OFF.
- Verify the scan tool Windshield Wiper Park Switch parameter is Active
- If the parameter does not change
Refer to Circuit/System Testing - Windshield Wiper Motor Malfunction.
- All OK.
Circuit/System Testing
Windshield Wiper/Washer Switch Malfunction
- Ignition OFF and all vehicle systems OFF, disconnect the harness
connector at the S82 Windshield
Wiper/Washer Switch. It may take up to 11 min for all vehicle systems to
power down.
- Test for less than 10 ohms between the low reference circuit terminal 2
and ground.
- Ignition OFF, disconnect the X3 harness connector at the K9 Body Control
Module.
- Test for less than 2 ohms in the low reference 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 less than 10 ohms
- Ignition ON.
- Verify the scan tool Windshield Wiper High Speed Switch parameter is
Inactive.
If not Inactive
- Ignition OFF, disconnect the X3 harness connector at the K9 Body Control
Module.
- Test for infinite resistance between the signal circuit terminal 1 and
ground.
- If less than infinite resistance, repair the short to ground on the
circuit.
- If infinite resistance, replace the K9 Body Control Module.
- If Inactive
- Install a 3 A fused jumper wire between the signal circuit terminal 1
and the low reference circuit
terminal 2.
- Verify the scan tool Windshield Wiper High Speed Switch parameter is
Active.
- Ignition OFF, remove the jumper wire, disconnect the X3 harness
connector at the K9 Body
Control Module, ignition ON.
- Test for less than 1 V between the signal circuit and ground.
- If 1 V or greater, repair the short to voltage on the circuit.
- If less than 1 V
- 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 K9 Body Control Module.
- If Active
- Test for greater than 8 V between the signal circuit terminal 3 and
ground.
- Ignition OFF, disconnect the X3 harness connector at the K9 Body Control
Module.
- Test for infinite resistance between the signal 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 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 K9 Body Control Module.
- If 8 V or greater
- Ignition OFF, disconnect the X3 harness connector at the K9 Body Control
Module, ignition ON.
- Test for less than 1 V between the S82 Windshield Wiper/Washer Switch
signal circuit terminal 3 and
ground.
Repair the short to voltage on the circuit.
- Test or replace the S82 Windshield Wiper/Washer Switch.
Windshield Wiper Motor Malfunction
- Ignition OFF and all vehicle systems OFF, disconnect the harness
connector at the M75 Windshield
Wiper Motor. It may take up to 2 min for all vehicle systems to power down.
- Test for less than 10 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 10 ohms
- Ignition ON.
- Verify the scan tool Windshield Wiper Park Switch parameter is Inactive.
If not Inactive
- Ignition OFF, disconnect the X4 harness connector at the K9 Body Control
Module.
- Test for infinite resistance between the M75 Windshield Wiper Motor
signal circuit terminal 2 and
ground.
- If less than infinite resistance, repair the short to ground on the
circuit.
- If infinite resistance, replace the K9 Body Control Module.
- If Inactive
- Install a 3 A fused jumper wire between the signal circuit terminal 2
and ground.
- Verify the scan tool Windshield Wiper Park Switch parameter is Active.
- Ignition OFF, remove the jumper wire, disconnect the X4 harness
connector at the K9 Body
Control Module, ignition ON.
- Test for less than 1 V between the signal circuit and ground.
- If 1 V or greater, repair the short to voltage on the circuit.
- If less than 1 V
- 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 K9 Body Control Module.
- If Active
- Connect a test lamp between the following control circuits and ground,
ignition ON.
- Control Circuit Terminal 4
- Control Circuit Terminal 5
- Verify the test lamp does NOT turn ON and OFF when commanding the
appropriate Windshield Wiper
Relay On and Off with a scan tool.
- If the test lamp turns ON and OFF for both terminals
Test or replace the M75 Windshield Wiper Motor.
- If the test lamp does not turn ON and OFF for one or both terminals
- Ignition OFF and all vehicle systems OFF, connect the harness connector
at the M75 Windshield Wiper
Motor. Disconnect the X2 harness connector at the X50A Fuse Block -
Underhood. It may take up to 2
min for all vehicle systems to power down.
- Test for less than 10 ohms between the ground circuit terminals listed
below and ground:
- Terminal C5
- Terminal H1
- If 10 ohms or greater
- 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 10 ohms
- Ignition ON.
- Verify the M75 Windshield Wiper Motor is not activated.
- If the M75 Windshield Wiper Motor is activated
- Ignition OFF, disconnect the harness connector at the M75 Windshield
Wiper Motor, ignition ON.
- Test for less than 1 V between each control circuit listed below and
ground:
- Terminal 4
- Terminal 5
- If 1 V or greater, repair the short to voltage on the circuit.
- If less than 1 V, replace the M75 Windshield Wiper Motor.
- If the M75 Windshield Wiper Motor is not activated
- Connect a 20 A fused jumper wire between the control circuit terminals
listed below, one at a time, and
B+.
- Verify the M75 Windshield Wiper Motor activates
- If the M75 Windshield Wiper Motor does not activate
- Ignition OFF, remove the jumper wire, disconnect the harness connector
at the M75 Windshield
Wiper Motor.
- 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 M75 Windshield Wiper Motor.
- If the M75 Windshield Wiper Motor activates
- Ignition OFF, connect the X2 harness connector at the X50A Fuse Block -
Underhood. Disconnect the X4
harness connector at the K9 Body Control Module, ignition ON.
- Verify the M75 Windshield Wiper Motor low speed is not activated.
- If the M75 Windshield Wiper Motor low speed is activated
- 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 D3 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 M75 Windshield Wiper Motor low speed is not activated
- Ignition OFF, disconnect the X5 harness connector at the K9 Body Control
Module, ignition ON.
- Verify the M75 Windshield Wiper Motor High Speed is not activated.
- If the M75 Windshield Wiper Motor high speed is activated
- Ignition OFF, disconnect the X2 harness connector at the X50A Fuse Block
- Underhood, ignition
ON.
- Test for infinite resistance between the control circuit terminal D2 and
ground.
- If less than infinite resistance, repair the short to ground on the
circuit.
- If infinite resistance, replace the X50A Fuse Block - Underhood.
- If the M75 Windshield Wiper Motor high speed is not activated
- Connect a 10 A fused jumper wire between the control circuit terminal 16
X4 and B+.
- Verify the M75 Windshield Wiper Motor activates.
If the M75 Windshield Wiper Motor does not activate
- Ignition OFF, remove the jumper wire, disconnect the X2 harness
connector at the X50A Fuse
Block - Underhood.
- Test for infinite resistance between the control circuit and ground.
- If less than infinite resistance, repair the short to ground on the
circuit.
- If less than 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, test or replace the X50A Fuse Block - Underhood.
- If the M75 Windshield Wiper Motor activates
- Connect a 10 A fused jumper wire between the control circuit terminal 24
X5 and ground.
- Verify the M75 Windshield Wiper Motor activates.
- If the M75 Windshield Wiper Motor does not activate
- Ignition OFF, remove the jumper wire, disconnect the X2 harness
connector at the X50A Fuse
Block - Underhood.
- Test for less than 1 V between the control circuit and ground.
- If 1 V or greater, repair the short to ground on the circuit.
- If less than 1 V
- 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, test or replace the X50A Fuse Block - Underhood.
- If the M75 Windshield Wiper Motor activates
- Replace the K9 Body Control Module.
Component Testing
Windshield Wiper/Washer Switch
- Ignition OFF, disconnect the harness connector at the S82 Windshield
Wiper/Washer Switch.
- Test for infinite resistance between the signal terminal 1 and the low
reference terminal 2 with the switch
in the open position.
If less than infinite resistance
Replace the S82 Windshield Wiper/Washer Switch.
If infinite resistance
- Test for less than 2 ohms between the signal circuit terminal 1 and the
low reference circuit terminal 2
with the switch in the closed position.
Replace the S82 Windshield Wiper/Washer Switch.
- Test for infinite resistance between the signal terminal 3 and the low
reference terminal 2 with the switch
in the open position.
- If less than infinite resistance
Replace the S82 Windshield Wiper/Washer Switch.
- Verify the resistance readings are within the specified range listed
below between the signal circuit
terminal 3 and the low reference circuit terminal 2 by pushing the switch in
the listed positions below.
- Delay 1 : 3.75-3.85kohms
- Delay 2 : 2.75-2.85kohms
- Delay 3 : 1.95-2.05kohms
- Delay 4 : 1.25-1.35kohms
- Delay 5 : 765-775ohms
- If not within the specified range
Replace the S82 Windshield Wiper/Washer Switch.
- If within the specified range
- All OK
Repair Instructions
Perform the Diagnostic Repair Verification after completing the repair.
- Windshield Wiper Motor Replacement
- Front Compartment Fuse Block Replacement
- Windshield Wiper and Washer Switch Replacement (Encore), Windshield
Wiper and Washer
Switch Replacement (Trax)
- Control Module References for body control module 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
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Diagnostic Instructions
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic
appro
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Install the positive crankcase ventilation pipe assembly (1) to the
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Connect the positive crankcase ventilation pipe to turbocharger (3).
Install the charger