Circuit/System Verification Chevrolet Silverado 1500

Circuit/System Verification

Verify that the Retained Accessory Power (RAP) circuit is functioning normally.

1. If the RAP is not functioning normally refer to «Symptoms - Wiring Systems»(/chevrolet/silverado-1500/2007-2007/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-troubleshooting-diagnosis__symptoms-wiring-systems) .

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.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Rear Door Lock Replacement (Crew Cab)»(/chevrolet/silverado-1500/2007-2007/remont/door-locks-anti-theft-systems/#door-lock-systems-door-handles) or «Rear Door Lock Replacement (Extended Cab Lower)»(/chevrolet/silverado-1500/2007-2007/remont/door-locks-anti-theft-systems/#door-lock-systems-door-handles) or «Rear Door Lock Replacement (Extended Cab Upper)»(/chevrolet/silverado-1500/2007-2007/remont/door-locks-anti-theft-systems/#door-lock-systems-door-handles)
2. «Instrument Panel Electrical Center or Junction Block Replacement - Left Side»(/chevrolet/silverado-1500/2007-2007/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-introduction)
3. «Control Module References»(/chevrolet/silverado-1500/2007-2007/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for BCM replacement, programming, and setup

1. Perform the «Diagnostic System Check - Vehicle»(/chevrolet/silverado-1500/2007-2007/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-system-check-vehicle) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/chevrolet/silverado-1500/2007-2007/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/chevrolet/silverado-1500/2007-2007/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Power Windows Malfunction (A31/AN3/DL3)

The driver and passenger door lock and side window switches are integrated control module switch assemblies. When a power window switch is activated in the up or down positions the driver door switch (DDS) supplies power and ground to the window motor control circuits to drive the window motor in the required direction. Prior to activating a power window motor the DDS will supply the control circuit with a low current bias voltage in order to determine that a short to ground condition does not exist and during window motor operation the DDS continues to monitor the motor current to verify proper window motor operation.

Schematic Reference

Moveable Window Schematics

Connector End View Reference

Window Systems Connector End Views

Description and Operation

Power Windows Description and Operation (Side Windows) or Power Windows Description and Operation (Rear Window)

Electrical Information Reference

1. «Circuit Testing»(/chevrolet/silverado-1500/2007-2007/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-troubleshooting-diagnosis__circuit-testing)
2. «Connector Repairs»(/chevrolet/silverado-1500/2007-2007/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-troubleshooting-diagnosis__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/chevrolet/silverado-1500/2007-2007/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-troubleshooting-diagnosis__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/chevrolet/silverado-1500/2007-2007/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-troubleshooting-diagnosis__wiring-repairs)

Scan Tool Reference

1. «Scan Tool Data Definitions»(/chevrolet/silverado-1500/2007-2007/remont/heated-glassdefoggers/#fixed-moveable-window-systems__scan-tool-data-definitions)
2. «Scan Tool Data List»(/chevrolet/silverado-1500/2007-2007/remont/heated-glassdefoggers/#fixed-moveable-window-systems__scan-tool-data-list)
3. «Scan Tool Output Controls»(/chevrolet/silverado-1500/2007-2007/remont/heated-glassdefoggers/#fixed-moveable-window-systems__scan-tool-output-controls)

1. Observe the operation of the power windows while using their respective window switches, each window should perform the UP and DOWN command. If the driver window fails the UP/DOWN operation, refer to «Driver Window Malfunction»(/chevrolet/silverado-1500/2007-2007/remont/heated-glassdefoggers/#fixed-moveable-window-systems) . If the front passenger window fails the UP/DOWN operation, refer to «Passenger Window Malfunction»(/chevrolet/silverado-1500/2007-2007/remont/heated-glassdefoggers/#fixed-moveable-window-systems__driver-master-control-malfunction) . If a rear door window fails the UP/DOWN operation, refer to «Rear Door Window Malfunction»(/chevrolet/silverado-1500/2007-2007/remont/heated-glassdefoggers/#fixed-moveable-window-systems__driver-master-control-malfunction) .
2. Disable the rear window switches by activating the window lockout switch on the driver master control. The rear window switches should be inoperative. If the rear window switches are still active, refer to «Window Lockout Switch Malfunction»(/chevrolet/silverado-1500/2007-2007/remont/heated-glassdefoggers/#fixed-moveable-window-systems__driver-master-control-malfunction) .
3. Observe the operation of the power passenger windows while using the window switches on the driver master control. Each passenger window should perform the UP and DOWN command. If a window fails the UP/DOWN operation, refer to «Driver Master Control Malfunction»(/chevrolet/silverado-1500/2007-2007/remont/heated-glassdefoggers/#fixed-moveable-window-systems__driver-master-control-malfunction) .

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.