B316B
DTC B316B
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 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 Electrical Diagrams
Connector End View Reference
Component Connector End Views Fuel Pump and Level Sensor Assembly
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 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 Down Switch - Inactive and Active
* Driver Window Main Control Express Up 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 1 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 signal circuit terminal 7 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 1.
6. Verify the scan tool Driver Window Main Control Down Switch parameter is Active
• If not Active
1. Ignition OFF, disconnect the harness connector at the M74D window motor-driver, ignition ON.
2. Test for less than 1 V between the signal circuit terminal 7 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 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
8. Install a 3 A fused jumper wire between the signal circuit terminal 9 and the ground circuit terminal 1.
9. Verify the scan tool Driver Window Main Control Up Switch parameter is Active
• If not Active
1. Ignition OFF, disconnect the harness connector at the M74D window motor-driver, ignition ON.
2. Test for less than 1 V between the signal circuit terminal 3 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 signal circuit terminal 5 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 7 and the ground circuit terminal 1.
12. Verify the scan tool Driver Window Main Control Express Switch parameter is Active
• If not Active
1. Ignition OFF, disconnect the harness connector at the M74D window motor-driver, ignition ON.
2. Test for less than 1 V between the signal circuit terminal 5 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 Verification Tests after completing the diagnostic procedure.
* Front Side Door Window Regulator Motor Replacement Service and Repair
* Front Side Door Window Switch Replacement (Left Side) Front Side Door Window Switch Replacement (Left Side)Front Side Door Window Switch Replacement (Right Side) Front Side Door Window Switch Replacement (Right Side)