Fixed & Moveable Window Systems: Diagnosis Chevrolet Silverado 2500 HD

DIAGNOSTIC CODE INDEX

DIAGNOSTIC CODE INDEX

Diagnostic Starting Point - Fixed and Moveable Windows

Begin the system diagnosis with the Diagnostic System Check - Vehicle . The Diagnostic System Check will provide the following information

1. The identification of the control modules which command the system.
2. The ability of the control modules to communicate through the serial data circuit.
3. The identification of any stored diagnostic trouble codes (DTCs) and their status.

The use of the Diagnostic System Check will identify the correct procedure for diagnosing the system and where the procedure is located.

Scan Tool Data Definitions

The Body Control Module (BCM) scan tool data definitions are a brief description of each of the window related parameters displayed within the scan tool data displays for the BCM.

The Driver Door Switch (DDS) scan tool data definitions are a brief description of each of the window related parameters displayed within the scan tool data displays for the DDS.

The Passenger Door Switch (PDS) scan tool data definitions are a brief description of each of the window related parameters displayed within the scan tool data displays for the PDS.

Scan Tool Data List

Body Control Module

Driver Door Switch

Passenger Door Switch

Scan Tool Output Controls

Body Control Module

Driver Door Switch and Passenger Door Switch

Diagnostic Instructions

1. Perform the «Diagnostic System Check - Vehicle»(ref-278018-S19353494792008012100000) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(ref-278018-S03493196652008012100000) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(ref-278018-S38264170562008012100000) provides an overview of each diagnostic category.

Diagnostic Fault Information

DTC B0283

Conditions for Running the DTC

1. Battery voltage is within 8.7-16.5 volts.
2. The ignition is ON.

Conditions for Setting the DTC

The defroster relay control circuit is open or shorted to ground.

Action Taken When the DTC Sets

The defroster relay control will be deactivated.

Conditions for Clearing the DTC

1. The DTC will become history if the HVAC control module no longer detects a fault.
2. The history DTC will clear after 50 fault-free ignition cycles.
3. The DTC can be cleared with a scan tool.

Circuit/System Testing

1. Ignition OFF, remove the REAR DEFOG relay in the underhood fuse block.
2. Test for less than 1 ohm of resistance between the relay coil ground circuit terminal 85 and ground. If greater than the specified range, test the ground circuit for an open/high resistance.
3. Connect a test lamp between the relay coil control circuit terminal 86 and the ground circuit terminal 85.
4. Ignition ON, operate the rear window defroster ON and OFF. The test lamp should turn ON and OFF when changing between the commanded states. If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the HVAC control module. If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the HVAC control module.
5. If all circuits test normal, replace the REAR DEFOG relay.

1. Perform the «Diagnostic System Check - Vehicle»(ref-278018-S19353494792008012100000) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(ref-278018-S03493196652008012100000) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(ref-278018-S38264170562008012100000) provides an overview of each diagnostic category.

DTC B3205

1. Battery voltage must be between 9-16 volts.
2. The ignition switch is in the ON position.

1. Disconnect the door switch connector C1.
2. Ignition ON, verify that a test lamp connected to ground does not illuminate when connected to either of the motor control circuit terminals in the harness connector. If the test lamp illuminates repair the affected control circuit for a short to voltage.
3. Verify that a test lamp connected to battery voltage does not illuminate when connected to either of the motor control circuit terminals in the harness connector. If the test lamp illuminates repair the affected control circuit for a short to ground.
4. Using a DMM verify that the resistance between the control circuit terminals in the harness connector is greater than 5 ohms. If the resistance is less than 5 ohms replace the affected power window motor.
5. If all the circuits test normal replace the affected door switch.

1. Perform the «Diagnostic System Check - Vehicle»(ref-278018-S19353494792008012100000) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(ref-278018-S03493196652008012100000) for an overview of the diagnostic approach
3. «Diagnostic Procedure Instructions»(ref-278018-S38264170562008012100000) provides an overview of each diagnostic category

1. Battery voltage is between 9-16 volts.
2. The ignition switch is in the ON position.
3. The BCM has attempted to energize the left rear power window up relay control circuit.

The left rear window up circuit is shorted to ground.

The BCM will not attempt left rear window up operation.

1. When the output request is not active the DTC will be a history status code.
2. The history code will clear after 50 fault free ignition cycles or by using the scan tool clear DTCs feature.

1. Disconnect the left rear window switch connector and connect a test lamp from the up signal circuit to ground.
2. Ignition ON, verify that the test lamp illuminates when the left rear up switch on the DDS is activated. If the test lamp does not illuminate test the left rear window up signal circuit for a short to ground. If the circuit tests normal replace the BCM.
3. If the circuits test normal replace the left rear window switch.

1. Perform the «Diagnostic System Check - Vehicle»(ref-278018-S19353494792008012100000) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(ref-278018-S03493196652008012100000) for an overview of the diagnostic approach
3. «Diagnostic Procedure Instructions»(ref-278018-S38264170562008012100000) provides an overview of each diagnostic category

1. Battery voltage is between 9-16 volts.
2. The ignition switch is in the ON position.
3. The BCM has attempted to energize the left rear power window down relay control circuit.

The left rear window down circuit is shorted to ground.

The BCM will not attempt left rear window down operation.

1. When the output request is not active the DTC will be a history status code.
2. The history code will clear after 50 fault free ignition cycles or by using the scan tool clear DTCs feature.

1. Disconnect the left rear window switch connector and connect a test lamp from the down signal circuit to ground.
2. Ignition ON, verify that the test lamp illuminates when the left rear down switch on the DDS is activated. If the test lamp does not illuminate test the left rear window down signal circuit for a short to ground. If the circuit tests normal replace the BCM.
3. If the circuits test normal replace the left rear window switch.

1. Perform the «Diagnostic System Check - Vehicle»(ref-278018-S19353494792008012100000) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(ref-278018-S03493196652008012100000) for an overview of the diagnostic approach
3. «Diagnostic Procedure Instructions»(ref-278018-S38264170562008012100000) provides an overview of each diagnostic category

1. Battery voltage is between 9-16 volts.
2. The ignition switch is in the ON position.
3. The window lockout function is disabled

The left rear window lockout circuit is shorted to ground.

The left rear power window will be inoperative.

1. When the fault is no longer present the DTC will be a history status code.
2. The history code will clear after 50 fault free ignition cycles or by using the scan tool clear DTCs feature.

1. Disconnect the left rear window switch connector and connect a test lamp from the lockout signal circuit to ground.
2. Ignition ON, verify that the test lamp illuminates while the rear window lockout function is inactive. If the test lamp does not illuminate test the left rear window lockout signal circuit for a short to ground. If the circuit tests normal replace the BCM.
3. If the circuits test normal replace the left rear window switch.

1. Perform the «Diagnostic System Check - Vehicle»(ref-278018-S19353494792008012100000) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(ref-278018-S03493196652008012100000) for an overview of the diagnostic approach
3. «Diagnostic Procedure Instructions»(ref-278018-S38264170562008012100000) provides an overview of each diagnostic category

1. Battery voltage is between 9-16 volts.
2. The ignition switch is in the ON position.
3. The BCM has attempted to energize the right rear power window up relay control circuit.

The right rear window up circuit is shorted to ground.

The BCM will not attempt right rear window up operation.

1. When the output request is not active the DTC will be a history status code.
2. The history code will clear after 50 fault free ignition cycles or by using the scan tool clear DTCs feature.

1. Disconnect the right rear window switch connector and connect a test lamp from the up signal circuit to ground.
2. Ignition ON, verify that the test lamp illuminates when the right rear up switch on the DDS is activated. If the test lamp does not illuminate test the right rear window up signal circuit for a short to ground. If the circuit tests normal replace the BCM.
3. If the circuits test normal replace the right rear window switch.

1. Perform the «Diagnostic System Check - Vehicle»(ref-278018-S19353494792008012100000) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(ref-278018-S03493196652008012100000) for an overview of the diagnostic approach
3. «Diagnostic Procedure Instructions»(ref-278018-S38264170562008012100000) provides an overview of each diagnostic category

1. Battery voltage is between 9-16 volts.
2. The ignition switch is in the ON position.
3. The BCM has attempted to energize the right rear power window down relay control circuit.

The right rear window down circuit is shorted to ground.

The BCM will not attempt right rear window down operation.

1. When the output request is not active the DTC will be a history status code.
2. The history code will clear after 50 fault free ignition cycles or by using the scan tool clear DTCs feature.

1. Disconnect the right rear window switch connector and connect a test lamp from the down signal circuit to ground.
2. Ignition ON, verify that the test lamp illuminates when the right rear down switch on the DDS is activated. If the test lamp does not illuminate test the right rear window down signal circuit for a short to ground. If the circuit tests normal replace the BCM.
3. If the circuits test normal replace the right rear window switch.

1. Perform the «Diagnostic System Check - Vehicle»(ref-278018-S19353494792008012100000) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(ref-278018-S03493196652008012100000) for an overview of the diagnostic approach
3. «Diagnostic Procedure Instructions»(ref-278018-S38264170562008012100000) provides an overview of each diagnostic category

1. Battery voltage is between 9-16 volts.
2. The ignition switch is in the ON position.
3. The window lockout function is disabled

The right rear window lockout circuit is shorted to ground.

The right rear power window will be inoperative.

1. When the fault is no longer present the DTC will be a history status code.
2. The history code will clear after 50 fault free ignition cycles or by using the scan tool clear DTCs feature.

1. Disconnect the right rear window switch connector and connect a test lamp from the lockout signal circuit to ground.
2. Ignition ON, verify that the test lamp illuminates while the rear window lockout function is inactive. If the test lamp does not illuminate test the right rear window lockout signal circuit for a short to ground. If the circuit tests normal replace the BCM.
3. If the circuits test normal replace the right rear window switch.

Visual/Physical Inspection

1. Inspect for aftermarket devices which could affect the operation of the system. Refer to «Checking Aftermarket Accessories»(ref-278019-S10639375482008012100000) .
2. Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom

1. «Defogger Grid Lines Diagnosis»(ref-278004-S35916308622008012100000)
2. «Rear Window Defogger Inoperative»(ref-278004-S41150529252008012100000)
3. «Power Windows Malfunction (A31/AN3/DL3)»(ref-278004-S19165767172008012100000) or «Power Windows Malfunction (A31 w/o AN3, DL3)»(ref-278004-S11981457162008012100000)
4. «Power Rear Sliding Window Malfunction»(ref-278004-S05239114332008012100000)

Defogger Grid Lines Diagnosis

This test is for reference only. A grid line fault requires the rear window replacement. Refer to Rear Window Replacement .

Scheme 17

1. Start the engine.
2. Activate the rear window defogger system.
3. Connect a test lamp to a good ground.
4. Move the test lamp probe from zone 5 to zone 1 along each grid line. If the test lamp shows full brilliance at both ends of the grid lines, inspect for an open or poor connection in the ground circuit of the rear window defogger grid. Refer to «Testing for Intermittent Conditions and Poor Connections»(ref-278019-S21810776732008012100000) and «Connector Repairs»(ref-278019-S06982211772008012100000) . If the test lamp goes out, test the grid line in at least 2 places (1, 3) to eliminate the possibility of bridging the open (2) in the grid line.

1. Perform the «Diagnostic System Check - Vehicle»(ref-278018-S19353494792008012100000) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(ref-278018-S03493196652008012100000) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(ref-278018-S38264170562008012100000) provides an overview of each diagnostic category.

Rear Window Defogger Inoperative

1. Ignition ON, verify that the rear defogger indicator illuminates when the switch is activated. If the indicator does not illuminate when system operation is attempted, replace the HVAC control module.
2. Connect a test lamp from the supply side of the REAR DEFOG fuse to ground.
3. Verify that the test lamp is illuminated while the rear defogger is turned on. If the test lamp does not illuminate test the battery supply circuit to the REAR DEFOG relay for an open/high resistance or short to ground. If the circuit tests normal replace the REAR DEFOG relay.
4. Disconnect the rear defogger grid connectors and verify that a test lamp illuminates when connected from battery voltage to the ground circuit connector. If the test lamp does not illuminate repair the ground circuit for an open/high resistance.
5. Connect a test lamp across the rear defogger grid connectors and verify that the test lamp illuminates when the defogger is turned on. If the test lamp does not illuminate repair the defogger grid supply circuit for an open/high resistance.
6. If the circuits test normal replace the rear window defogger grid.

Component Testing

Rear Window Defogger Grid Test

1. Ignition ON, turn on the rear window defogger.
2. Verify that a test lamp illuminates between each rear window defogger grid line and ground. If the test lamp remains bright at the middle of the grid line, test for an open between the test point and the ground side of the grid.

1. If the test lamp remains off at the middle of the grid line, test for an open between the test point and the voltage supply side of the grid.

1. Perform the «Diagnostic System Check - Vehicle»(ref-278018-S19353494792008012100000) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(ref-278018-S03493196652008012100000) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(ref-278018-S38264170562008012100000) provides an overview of each diagnostic category.

Power Rear Sliding Window Circuit Test

1. Disconnect the rear sliding window switch and connect a test lamp from the accessory voltage supply circuit terminal A to ground.
2. Ignition ON, verify the test lamp illuminates. If the test lamp does not illuminate test the accessory voltage supply circuit for an open/high resistance or short to ground. If the circuit tests normal replace the BCM.
3. Disconnect the open and close relays.
4. Verify that a test lamp connected to battery voltage illuminates when connected to each of the relay ground circuit terminals A1 and B2. If the test lamp does not illuminate repair the affected ground circuit for an open/high resistance.
5. Verify that a test lamp connected to ground illuminates when connected to each of the relay battery voltage supply circuit terminals A2. If the test lamp does not illuminate repair the affected battery voltage supply circuit for an open/high resistance or short to ground.
6. Connect the rear sliding window switch and connect a test lamp from the open relay control circuit terminal C2 in the open relay connector to ground.
7. Ignition ON, verify that the test lamp illuminates when the rear sliding window switch is pressed in the open position. If the test lamp does not illuminate test the open relay control circuit for an open/high resistance or short to ground. If the circuit tests normal replace the rear sliding window switch.
8. Connect a test lamp from the close relay control circuit terminal C2 in the close relay connector to ground.
9. Ignition ON, verify that the test lamp illuminates when the rear sliding window switch is pressed in the closed position. If the test lamp does not illuminate test the close relay control circuit for an open/high resistance or short to ground. If the circuit tests normal replace the rear sliding window switch.
10. Connect the open and close relays, disconnect the window motor connector, and connect a test lamp from the motor open control circuit terminal to ground.
11. Ignition ON, verify that the test lamp illuminates when the rear sliding window switch is pressed in the open position. If the test lamp does not illuminate test the motor open control circuit for an open/high resistance or short to ground. If the circuit tests normal replace the open relay.
12. Connect a test lamp from the motor close control circuit terminal to ground and verify that the test lamp illuminates when the rear sliding window switch is pressed in the closed position. If the test lamp does not illuminate test the motor close control circuit for an open/high resistance or short to ground. If the circuit tests normal replace the close relay.
13. If the circuits test normal replace the window motor.

1. Perform the «Diagnostic System Check - Vehicle»(ref-278018-S19353494792008012100000) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(ref-278018-S03493196652008012100000) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(ref-278018-S38264170562008012100000) provides an overview of each diagnostic category.

Power Windows Malfunction (A31/AN3/DL3)

Driver Window Malfunction

1. Ignition OFF, disconnect the harness connector C1 at the DDS.
2. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 2 and ground. If the test lamp does not illuminate, test the B+ circuit for a short to ground or open/high resistance.
3. Ignition OFF, reconnect the harness connector C1 at the DDS and disconnect the harness connector at the driver window motor.
4. Connect a test lamp between control circuit terminal A and control circuit terminal B.
5. Ignition ON, command the driver window UP and DOWN by using the driver window switch. The test lamp should turn ON when commanding the UP and DOWN states. If the test lamp remains OFF during either of the commands, test for a short to ground on either control circuit. If the circuits test normal, replace the DDS.
6. If all circuits test normal, test or replace the driver window motor.

1. Install a 25-amp fused jumper wire between the control terminal A and 12 volts. Momentarily install a jumper wire between the control terminal B and ground. The appropriate window motor should perform the UP or DOWN function. If the function does not perform as specified, replace the appropriate window motor.
2. Reverse the jumper wires; the appropriate window motor should perform the DOWN or UP function. If the function does not perform as specified, replace the appropriate window motor

1. Perform the «Diagnostic System Check - Vehicle»(ref-278018-S19353494792008012100000) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(ref-278018-S03493196652008012100000) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(ref-278018-S38264170562008012100000) provides an overview of each diagnostic category.

Power Windows Malfunction (A31 w/o AN3, DL3)

Driver Power Window Inoperative

1. Ignition OFF, disconnect the harness connector C2 at the driver window switch.
2. Ignition OFF, test for less than 1 ohm of resistance between the ground circuit terminal A and ground. If greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal H and ground. If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
4. Connect the harness connector C2 at the driver window switch, disconnect the harness connector at the driver window motor.
5. Connect a test lamp between control circuit terminal A and control circuit terminal B.
6. Command the driver window UP and DOWN by using the driver window switch. The test lamp should turn illuminate when commanding the UP and DOWN states. If the test lamp remains OFF during either of the commands, test for a short to ground or open/high resistance on either control circuit. If the circuits test normal, replace the driver window switch.
7. If all circuits test normal, test or replace the driver window motor.

Passenger Power Window Inoperative

1. Ignition OFF, disconnect the harness connector at the passenger window switch.
2. Ignition OFF, test for less than 1 ohm of resistance between the ground circuit terminal F and ground. If greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal G and ground. If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
4. Connect a test lamp between the passenger window switch passenger down signal circuit terminal C and ground.
5. Ignition ON, command the passenger window DOWN by using the RF window switch on the driver master control. The test lamp should illuminate during the DOWN command. If the test lamp is always OFF, test for a short to ground on the signal circuit. If the circuits test normal, replace the driver window switch.
6. Connect a test lamp between the passenger window switch passenger up signal circuit terminal A and ground.
7. Command the passenger window UP by using the RF window switch on the driver master control. The test lamp should illuminate during the UP command. If the test lamp is always OFF, test for a short to ground on the signal circuit. If the circuits test normal, replace the driver window switch.
8. Ignition OFF, connect the passenger window switch and disconnect the harness connector at the passenger window motor.
9. Connect a test lamp between control circuit terminal A and control circuit terminal B.
10. Ignition ON, command the passenger window UP and DOWN by using the passenger window switch. The test lamp should turn ON when commanding the UP and DOWN states. If the test lamp remains OFF during either of the commands, test for a short to ground or open/high resistance on either control circuit. If the circuits test normal, replace the passenger window switch.
11. If all circuits test normal, test or replace the passenger window motor.

Rear Power Window Inoperative

1. Ignition OFF, disconnect the harness connector at the appropriate rear window switch.
2. Ignition OFF, test for less than 1.0 ohm of resistance between the ground circuit terminal F and ground. If greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal G and ground. If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
4. Connect a test lamp between the power window switch rear down signal circuit terminal C and ground.
5. Ignition ON, command the appropriate rear window DOWN by using the appropriate window switch on the driver master control. The test lamp should illuminate during the DOWN command. If the test lamp is always OFF, test for a short to ground or open/high resistance on the signal circuit. If the circuits test normal, replace the driver window switch.
6. Connect a test lamp between the power window switch rear up signal circuit terminal A and ground.
7. Command the appropriate rear window UP by using the appropriate window switch on the driver master control. The test lamp should illuminate during the UP command. If the test lamp is always OFF, test for a short to ground or open/high resistance on the signal circuit. If the circuits test normal, replace the driver window switch.
8. Ignition OFF, reconnect the appropriate rear window switch.
9. Ignition OFF, disconnect the power window lockout rear control circuit at the appropriate rear window switch.
10. Ignition OFF, disconnect the harness connector at the appropriate rear window motor.
11. Connect a test lamp between control circuit terminal A and control circuit terminal B.
12. Ignition ON, command the appropriate rear window UP and DOWN by using the appropriate rear window switch. The test lamp should turn illuminate when commanding the UP and DOWN states. If the test lamp remains OFF during either of the commands, test for a short to ground on either control circuit. If the circuits test normal, replace the appropriate rear window switch.
13. Reconnect the window master switch lockout circuit at the appropriate rear window switch.
14. Command the appropriate rear window UP and DOWN by pressing the appropriate rear window switch. The test lamp should turn illuminate when commanding the UP and DOWN states. If the test lamp remains OFF during either of the commands, test the window master switch lockout circuit for a short to ground. If the circuits test normal, replace the driver window switch.
15. If all circuits test normal, test or replace the appropriate rear window motor.

Window Lockout Switch Malfunction

1. Ignition ON, observe the scan tool Window Lockout Switch parameter while pressing the window lockout switch on the driver master control. The reading should change between ON and OFF. If the scan tool Window Lockout Switch parameter is always OFF, replace the driver window switch. If the scan tool Window Lockout Switch parameter is always ON, replace the driver window switch.
2. Ignition OFF, disconnect the power window lockout rear control circuit at the appropriate rear window switch.
3. Ignition ON, connect a test lamp between the power window lockout rear control circuit terminal D and ground.
4. Command the rear window lockout ON and OFF by pressing the lockout switch on the driver master control. The test lamp should go ON and OFF when changing between the commanded states. If the test lamp is always ON, test the control circuit for a short to B+, if the circuit tests normal, replace the driver window switch. If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the driver window switch.

Window Motor

1. Install a 25-amp fused jumper wire between the control terminal A and 12 volts. Momentarily install a jumper wire between the control terminal B and ground. The appropriate window motor should perform the UP or DOWN function. If the function does not perform as specified, replace the appropriate window motor.
2. Reverse the jumper wires; the appropriate window motor should perform the DOWN or UP function. If the function does not perform as specified, replace the appropriate window motor.