Circuit Description
The window switch or window switch circuits that generate this diagnostic trouble code (DTC) are built-in parts of the driver door switch assembly (DDSA). There are no external circuits. The DDSA internally supplies power and ground to the contacts of each of the integral window switches. When one of the switches is operated, the switch contacts close, providing the DDSA with a specific window switch signal. The DDSA processes this signal, assigns a digital message to it, and sends the message to the appropriate driver door module (DDM), passenger front door module (PDM), left rear door module (LRDM), or right rear door module (RRDM), via the class 2 serial data circuit. The door module, upon receiving the message, examines other relevant information available on the class 2 serial data line in order to determine if conditions are correct for window operation to occur. If conditions are correct, the door module applies power and ground to the associated window motor and circuits in order to move the window.
Conditions for Running the DTC
The DDSA must be powered and must not have DTCs B1327-Battery Low Voltage or B1328-Battery High Voltage set for this DTC to set.
Conditions for Setting the DTC
If the DDSA determines that one of its built in window switches is closed for more than 15 continuous seconds, it sets the DTC.
Action Taken When the DTC Sets
The action taken depends on which switch contacts are closed:
| • | If any window switch UP contacts are closed for more than 15 seconds, both UP and DOWN signals from that switch will be ignored until the input is no longer detected, or the ignition is cycled from Off to Run. |
| • | If any window switch DOWN contacts are closed for more than 15 seconds, DOWN signals from that switch will be ignored until the input is no longer detected, or the ignition is cycled from Off to Run. The window UP function from that switch will still be operational. |
| • | If any window switch EXPRESS contacts are closed for more than 15 seconds, express signals from that switch will be ignored until the DDSA no longer detects the input. |
| • | All windows will operate normally from their respective passenger door window switch. |
Conditions for Clearing the DTC
The DDSA clears the current DTC when it no longer detects a closed window switch, or the ignition is cycled from Off to Run.
Diagnostic Aids
An intermittently sticking DDSA window switch may set the DTC. If the current DTC sets intermittently, refer to Testing for Electrical Intermittents in Wiring Systems.
Test Description
The numbers below refer to the step numbers on the diagnostic table.
-
This step checks the module input state using the normal input status.
-
This step checks to see that the input is recognized by the module.
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Power Window Schematics and Door Control Module Schematics | |||
1 | Did you perform the Door Systems Diagnostic System Check? | Go to Step 2 | |
Does the scan tool display Idle? | Go to Step 3 | Go to Step 4 | |
Does the Window Switch parameter change state? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 4 | |
4 | Inspect for poor connections at the driver door window switch (DDSA) harness connector. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 6 | Go to Step 5 |
5 | Replace the driver door switch assembly (DDSA). Refer to Front Door Switch Replacement . Did you complete the replacement? | Go to Step 6 | -- |
6 |
Does the DTC reset? | Go to Step 2 | System OK |
