B317A

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 (Connector Views)
Description and Operation

Power Windows Description and Operation (Power Windows Description and Operation)
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 (Programming and Relearning)for scan tool information

Circuit/System Verification

Ignition ON, command each window UP and DOWN by using each switch on the S79D window switch-driver and by using the S79P window switch-passenger, the S79LR window switch-left rear and the S79RR window switch-right rear. Each window should perform the UP and DOWN functions from each switch.

Circuit/System Testing

1. Ignition ON, verify that the scan tool Driver Window Main Control Down Switch, Driver Window Main Control Express Switch, Driver Window Main Control Up Switch, Front Passenger Main Control Down Switch, Front Passenger Main Control Express Switch, Front Passenger Main Control Up Switch, 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, and Right Rear Window Main Control Up Switch parameters are inactive.

• If any of the parameters are always Active, replace the S79D window switch-driver.

2. Verify that the scan tool Passenger Window Switch at Door parameter is Inactive.

• If not the specified value, replace the S79P window switch-passenger.

3. Verify that the scan tool Left Rear Window Switch at Door parameter is Inactive.

• If not the specified value, replace the S79LR window switch-left rear.

4. Verify that the scan tool Right Rear Window Switch at Door parameter is Inactive.

• If not the specified value, replace the S79RR window switch-right rear.

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)