Circuit Description
The window lockout switch is contained within the driver door switch assembly (DDSA). The DDSA contains a microprocessor which takes the signal generated by the window lockout switch and assigns a digital message to the switch signal. The DDSA sends this message via the GMLAN serial data circuit to the passenger front door module (PDM), right rear door module (RRDM), and left rear door module (LRDM). When the window lockout function is activated, the passenger door modules will not allow their associated window to operate from the associated passenger door window switch. For more detailed information concerning power window lockout operation refer to Power Windows Description and Operation .
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC B3525 Window Lockout Switch Circuit
This vehicle has DTCs which include DTC symptoms. For more information on DTC symptoms, refer to DTC Symptom Description in Vehicle DTC Information.
DTC Symptom | DTC Symptom Descriptor |
|---|---|
02 | Short to Ground |
Conditions for Running the DTC
The DDM and the DDSA must be powered.
Conditions for Setting the DTC
The DDSA detects that the window lockout switch is closed for more than 30 continuous seconds.
Action Taken When the DTC Sets
The DDSA deactivates and ignores inputs from the failed switch contacts and stops sending messages for this switch to the DDM. The DDSA will continue to respond to inputs from other non-failed switch contacts.
Conditions for Clearing the DTC
| • | The condition responsible for setting the DTC no longer exists. |
| • | You issue a scan tool CLEAR DTCs command. |
| • | A history DTC will clear once 40 consecutive malfunction free ignition cycles have occurred. |
Diagnostic Aids
Thoroughly inspect the wiring and connectors. An incomplete inspection of the wiring and connectors may result in misdiagnosis causing part replacement with the reappearance of the malfunction. If an intermittent malfunction exists, refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Power Window Schematics Connector End View Reference: Power Door Systems Connector End Views | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
2 |
Does the scan tool display Off? | Go to Step 3 | Go to Step 4 |
3 |
Does the 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 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 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 |
