GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2000 🢒 Bonneville 🢒 Body and Accessories 🢒 Doors 🢒 DTC B3527 Window Lockout Switch Circuit Low

Object Number: 428921 Size: MF
LH Front Door
Handling ESD Sensitive Parts Notice
Front Door Dimming

Circuit Description

The switch that failed and generated this diagnostic trouble code (DTC) is part of the driver door switch. This module contains a microprocessor which takes the ground signal generated by this switch and assigns a digital message to the switch signal. The driver door switch then sends this message over a simple bus interface (SBI) link to the driver door module (DDM).

Conditions for Running the DTC

The DDM must be powered for this DTC to set.

Conditions for Setting the DTC

If the driver door module (DDM) receives the message that the switch is closed for more than 30 continuous seconds the DDM sets this DTC.

Action Taken When the DTC Sets

The driver door switch assembly does not send a new lockout ON/OFF message until the DTC is cleared and the switch is re-activated. The windows and the indicator lamp respond to the last valid switch signal.

Conditions for Clearing the DTC

The DDM clears this DTC when the switch message indicates a change of states.

Test Description

The numbers below refer to the step numbers on the diagnostic table.

  1. Checks the existing state of the driver door window switch module passenger window lockout switch by using the current state of the input parameter.

Step

Action

Value(s)

Yes

No

1

Did you perform A Diagnostic System Check - Door Systems?

--

Go to Step 2

Go to Diagnostic System Check - Door Systems

2

  1. Install a scan tool.
  2. Turn ON the ignition with the engine OFF.
  3. Observe the Window Lockout Sw. parameter in the Driver Door Module data list using the scan tool.

Does the scan tool display OFF?

--

Go to Step 3

Go to Step 4

3
  1. Activate the window lockout switch.
  2. Observe the Window Lockout Sw. parameter using the scan tool.

Does the Window Lockout Sw. parameter change state?

--

Go to Step 9

Go to Step 4

4
  1. Turn OFF the ignition.
  2. Disconnect the driver door switch module.
  3. Turn ON the ignition with the engine OFF.
  4. Observe the Window Lock out Sw. parameter using the scan tool.

Does the scan tool indicate the OFF state?

--

Go to Step 6

Go to Step 5

5

Inspect for poor connections/terminal tension at the driver door module 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 9

Go to Step 7

6

Inspect for poor connections/terminal tension at the driver door switch module 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 9

Go to Step 8

7

Replace the driver door module. Refer to Door Control Module Replacement .

Did you complete the replacement?

--

Go to Step 9

--

8

Replace the driver door switch module. Refer to Front Door Switch Replacement .

Did you complete the replacement?

--

Go to Step 9

--

9
  1. Clear the DTCs using the scan tool.
  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