GM Service Manual Online
For 1990-2009 cars only

Circuit Description

The switch that failed and generated this diagnostic trouble code (DTC) is a built in part of the driver door switch assembly (DDSA). However, it is the driver door module (DDM) that actually sets the DTC. The DDSA contains a microprocessor which takes the signal generated by the switch and assigns a digital message to the switch signal. The DDSA then sends this message over the power door serial data line to the DDM.

Conditions for Running the DTC

The DDM and the DDSA must be powered.

Conditions for Setting the DTC

If the driver door switch assembly (DDSA) reports to the driver door module (DDM) that the switch is closed for more than 30 continuous seconds, the DDM sets this DTC.

Action Taken When the DTC Sets

When this DTC is current, the DDM shall act on the rising edge of the switch input as normal (no action).

Conditions for Clearing the DTC

The DDM clears this DTC when the switch message status changes.

Step

Action

Yes

No

Schematic Reference: Outside Rearview Mirror Schematics

1

Did you perform the Door Systems Diagnostic System Check?

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. With the scan tool, observe the Driver Mirror Switches parameter in the Driver Door Module Inputs list.

Does the scan tool display the Idle state?

Go to Step  3

Go to Step  4

3

  1. Activate the mirror fold switch.
  2. With the scan tool, observe the Driver Mirror Switches parameter.

Does the Driver Mirror Switches parameter change states momentarily?

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 switch assembly 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. Refer to Front Door Switch Replacement .

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