Chevrolet Trax: DTC B316B, B317A, B318A, OR B319A (AXG, A33, A66): Driver 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 Descriptor

DTC B316B 00

Driver Window Switch Malfunction

Diagnostic Fault Information

Circuit/System Description

The driver window motor is supplied with B+ voltage which is used to power the motor and also used as a reference voltage within the logic circuit. When the driver window switch is pressed, a switch is closed causing the reference voltage in the appropriate circuit in the window motor to drop, the window motor responds by moving the window in the direction commanded.

Conditions for Running the DTC

Battery voltage must be between 9-16 V.

Conditions for Setting the DTC

The driver window motor has detected the driver left front window switch is active for greater than 60 seconds.

Action Taken When the DTC Sets

The driver power window will malfunction

Conditions for Clearing the DTC

• 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.

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

1. Ignition ON.
2. 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

3. All OK.

Circuit/System Testing

1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the S79D Window Switch-Driver. It may take up to 2 minutes for all vehicle systems to power down.
2. Test for less than 10 ohms between the ground circuit terminal 11 and ground.

If 10 ohms or greater

1. Ignition OFF.
2. 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

3. Ignition ON.
4. Verify the scan tool Driver Window Main Control Down Switch parameter is Inactive.

If not Inactive

1. Ignition OFF, disconnect the harness connector at the M74D Window Motor-Driver.
2. Test for infinite resistance between the S79D Window Switch-Driver signal circuit terminal 8 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

5. Install a 3 A fused jumper wire between the signal circuit terminal 8 and the ground circuit terminal 11.
6. Verify the scan tool Driver Window Main Control Down Switch parameter is Active

If not Active

1. Ignition OFF, remove the 3 A fused jumper wire, disconnect the harness connector at the M74D Window Motor-Driver, ignition ON.
2. Test for less than 1 V between the S79D Window Switch-Driver signal circuit terminal 8 and ground.

• If 1 V or greater, repair the short to voltage on the circuit.
• If less than 1 V

3. 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

7. Verify the scan tool Driver Window Main Control Up Switch parameter is Inactive.

If not Inactive

1. Ignition OFF, disconnect the harness connector at the M74D Window Motor-Driver.
2. Test for infinite resistance between the S79D Window Switch-Driver signal circuit terminal 9 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

8. Install a 3 A fused jumper wire between the signal circuit terminal 9 and the ground circuit terminal 11.
9. Verify the scan tool Driver Window Main Control Up Switch parameter is Active

If not Active

1. Ignition OFF, remove the 3 A fused jumper wire, disconnect the harness connector at the M74D Window Motor-Driver, ignition ON.
2. Test for less than 1 V between the S79D Window Switch-Driver signal circuit 9 and ground.

• If 1 V or greater, repair the short to voltage on the circuit.
• If less than 1 V

3. 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

10. Verify the scan tool Driver Window Main Control Express Switch parameter is Inactive.

If not Inactive

1. Ignition OFF, disconnect the harness connector at the M74D Window Motor-Driver.
2. Test for infinite resistance between the S79D Window Switch-Driver signal circuit terminal 10 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

11. Install a 3 A fused jumper wire between the signal circuit terminal 10 and the ground circuit terminal 11.
12. Verify the scan tool Driver Window Main Control Express Switch parameter is Active

• If not Active

1. Ignition OFF, remove the 3 A fused jumper wire, disconnect the harness connector at the M74D Window Motor-Driver, ignition ON.
2. Test for less than 1 V between the S79D Window Switch-Driver signal circuit 10 and ground.

• If 1 V or greater, repair the short to voltage on the circuit.
• If less than 1 V

3. 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

13. Test or replace the S79D Window Switch-Driver.

Component Testing

Driver Window Switch

1. Ignition OFF, disconnect the harness connector at the S79D Window Switch-Driver.
2. Test for infinite resistance between the terminals listed below with the switch in the open position:

• Ground terminal 11 and control terminal 7
• Ground terminal 11 and control terminal 8
• Ground terminal 11 and control terminal 9
• Ground terminal 11 and control terminal 10
• If less than infinite resistance

Replace the S79D Window Switch-Driver.

• If infinite resistance

3. Test for less than 3 ohms between the ground terminal 11 and the control terminal 9 with the switch in the Up position.

• If 3 ohms or greater

Replace the S79D Window Switch-Driver.

• If less than 3 ohms

4. Test for less than 3 ohms between the ground terminal 11 and the control terminal 8 with the switch in the Down position.

• If 3 ohms or greater

Replace the S79D Window Switch-Driver.

• If less than 3 ohms

5. All OK

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

• 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)

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