GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2004 🢒 GTO 🢒 DTC 🢒 DTC 11

Circuit Description

Control buttons located on the steering wheel provide remote operation of various audio system functions. The remote controls constitute a resistive network. When a button is pressed, the change in resistance is interpreted by the radio as a button press and the appropriate function is actioned.

Conditions for Setting the DTC

With the ignition in either the Accessories position or the On position, DTC 11 will set if a steering wheel control button remains pressed or stuck for more than 30 seconds.

Test Description

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

  1. Tests for proper operation of the steering wheel radio control buttons.

    2.

  2. Uses the scan tool data list to check the state of the steering wheel control buttons.

    3.

  3. Tests for correct resistance range of the steering wheel radio control circuit.

    4.

  4. Tests the steering wheel radio control circuit for a short to ground.

DTC 11 -- Steering Wheel Remote Button Jammed

Step

Action

Values

Yes

No

Schematic Reference: Steering Wheel Controls Schematics

1

Did you perform the Entertainment Diagnostic System Check?

--

Go to Step 2

Go to Diagnostic System Check - Radio/Audio System

2

  1. Switch the audio head unit ON.
  2. Press each of the steering wheel remote control buttons and note if the unit follows the command.

Does the audio system operate as expected?

--

System OK

Go to Step 3

3

  1. Connect a scan tool to the DLC.
  2. Select Diagnostics / Model Year / Vehicle Model / Body / Audio System / Data Display / Data List.
  3. Scroll to Steering Wheel Remote Control in the scan tool menu.
  4. Do not press any button.

Does the scan tool display KEY RELEASED?

--

Go to Step 4

Go to Step 5

4

Press each of the steering wheel remote control buttons in turn.

Does the scan tool display the name of each button when pressed?

--

Go to Step 8

Go to Step 6

5

  1. Remove the audio system head unit. Refer to Radio Replacement .
  2. Using a digital ohmmeter, check the resistance of the steering wheel radio control switch assembly at the radio connector.

Is the resistance as specified?

Between 3.5K ohms - 3.9K ohms

Go to Step 7

Go to Step 9

6

With the ohmmeter connected as in Step 5, press and hold the MUTE button on the steering wheel radio controls.

Is the resistance as specified?

Between 270 ohms - 300 ohms

Go to Step 7

Go to Step 10

7

  1. Using a digital ohmmeter, check the resistance of the steering wheel control high side circuit at the radio connector and a known good ground.
  2. Using a digital ohmmeter, check the resistance of the steering wheel control low side circuit at the radio connector and a known good ground.

Is the resistance as specified?

Open Circuit

Go to Step 8

Go to Step 9

8
  1. Turn the headlamp switch to the Park position.
  2. Using a digital ohmmeter, check the resistance at radio connector A133 between terminal X1-C11, circuit 1796, and terminal X1-C12, circuit 1750.3.

Is the resistance as specified?

Between 3.5K ohms - 3.9K ohms

Go to Step 11

Go to Step 9

9

Repair a fault in the steering wheel control circuit . Refer to Wiring Repairs .

Did you complete the repair?

--

Go to Step 12

 

10

Replace steering wheel remote controls.

Did you complete the repair?

--

Go to Step 12

 

11

Replace the audio system head unit. Refer to Radio Replacement .

Did you complete the repair?

--

Go to Step 12

 

12
  1. Use the scan tool in order to clear the DTCs.
  2. Turn the ignition OFF, then ON again and wait 30 seconds with the radio ON.

Does the DTC reset?

--

Go to Step 2

System OK