For 1990-2009 cars

### 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 .

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.

• | After 40 consecutive warm-up cycles without failure, the history DTC will be cleared.

### 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 .

Step | Action | Yes | No
--- | --- | --- | ---
Schematic Reference: Moveable Window Schematics Connector End View Reference: Vehicle Access Connector End Views
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle
2 |

1. Install a scan tool.
2. Turn ON the ignition with the engine OFF.
3. With the scan tool, observe the Window Lockout Switch parameter in the Driver Door Switch Assembly (DDSA) data list.

Does the scan tool display Off?

Go to Step 3

Go to Step 4

3 |

1. Activate the window lockout switch.
2. With the scan tool, observe the Window Lockout Switch parameter.

Does the parameter change state?

Go to Testing for Intermittent Conditions and Poor Connections

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 . Did you find and correct the condition? | Go to Step 6 | Go to Step 5
5 | Replace the DDSA. Refer to Door Lock and Side Window Switch Replacement - Driver Side . Did you complete the replacement? | Go to Step 6 | --
6 |

1. Use the scan tool in order to clear the DTCs.
2. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.

Does the DTC reset?

Go to Step 2

System OK