B318A

DTC B316B, B317A, B318A, or B319A

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.

* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC B316B 00
- Driver Window Switch Malfunction

DTC B316B 02
- Driver Window Switch Short to Ground

DTC B316B 39
- Driver Window Switch Internal Malfunction

DTC B317A 02
- Passenger Window Switch Short to Ground

DTC B317B 39
- Passenger Window Switch Internal Malfunction

DTC B318A 02
- Left Rear Window Switch Short to Ground

DTC B318A 39
- Left Rear Window Switch Internal Malfunction

DTC B319A 02
- Right Rear Window Switch Short to Ground

DTC B319A 39
- Right Rear Window Switch Internal Malfunction

Circuit/System Description

The body control module (BCM) monitors, receives and transmits serial data to each of the doors switches. When a window switch has been activated on the driver window switch, a signal is sent to the BCM which sends a signal to the appropriate passenger or rear window switch and the window switch will then command the corresponding window motor to move in the direction commanded.

Conditions for Running the DTC

* Battery voltage must be between 9-16 V.

* The ignition switch is in the ON position.

Conditions for Setting the DTC

B316B 00

The BCM has detected the driver right front or left rear or right rear window switch is active for greater than 60 seconds.

B316B 02

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

B316B 39

The BCM has detected an internal failure within the driver door switch.

B317A 02

The BCM has detected the passenger window switch is active for greater than 60 seconds.

B317B 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.

B318B 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.

B319B 39

The BCM has detected an internal failure within the right rear window switch.

Action Taken When the DTC Sets

The affected power window switch will malfunction.

Conditions for Clearing the DTC

* The DTC will be current 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 Electrical Diagrams

Connector End View Reference

Component Connector End Views Sunshade - Left Front

Description and Operation

Power Windows Description and Operation Power Windows

Electrical Information Reference

* Circuit Testing Circuit Testing

* Connector Repairs Connector Repairs

* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections

* Wiring Repairs Wiring Repairs

Scan Tool Reference

Control Module References Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON.

2. Verify the driver window moves while commanding the window UP and DOWN with the driver window switch

• If the driver window does not move, refer to Circuit/System Testing.

• If the driver window moves

3. Verify the passenger, left rear and right rear windows move while commanding each window UP and DOWN with the switches on the driver window switch.

• If a window does not move, refer to Circuit/System Testing.

• If the passenger, left rear and right rear windows move

4. Verify the passenger window moves while commanding the window UP and DOWN with the passenger window switch.

• If the passenger window does not move, refer to Circuit/System Testing.

• If the passenger window moves

5. Verify the left rear window moves while commanding the window UP and DOWN with the left rear window switch.

• If the left rear window does not move, refer to Circuit/System Testing.

• If the left rear window moves

6. Verify the right rear window moves while commanding the window UP and DOWN with the right rear window switch.

• If the right rear window does not move, refer to Circuit/System Testing.

• If the right rear window moves

7. All OK.

Circuit/System Testing

1. Ignition ON.

2. Verify the scan tool Left Rear Window Main Control Down Switch, Left Rear Window Main Control Express Switch, Left Rear Window Main Control Up Switch, Right Rear Window Main Control Down Switch, Right Rear Window Main Control Express Switch, Right Rear Window Main Control Up Switch, Front Passenger Window Main Control Down Switch, Front Passenger Window Main Control Express Switch, and the Front Passenger Window Main Control Up Switch parameter changes between Inactive and Active when pressing and pulling the right front, right rear and left rear switches on the driver window switch.

• If the parameters do not change
Replace the S79D window switch - driver.

• If the parameters changes

3. Verify the scan tool Left Rear Window Switch at Door parameter changes between Inactive and Active when pressing and pulling the left rear window switch.

• If the parameters do not change
Replace the S79LR window switch - left rear.

• If the parameters changes

4. Verify the scan tool Passenger Window Switch at Door parameter changes between Inactive and Active when pressing and pulling the passenger window switch.

• If the parameters do not change
Replace the S79P window switch - passenger.

• If the parameters changes

5. Verify the scan tool Right Rear Window Switch at Door parameter changes between Inactive and Active when pressing and pulling the right rear window switch.

• If the parameters do not change
Replace the S79RR window switch - right rear.

• If the parameters changes

6. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.

* Front Side Door Window and Multifunction Switch Replacement Front Side Door Window and Multifunction Switch Replacement

* Rear Side Door Window Switch Replacement Rear Side Door Window Switch Replacement