On-Board Diagnostic Mode

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.

Follow the instructions below to enter and utilize the on-board diagnostic. These multiple button presses are different depending on the faceplate option content level.

Key On, engine Off, radio in AM/FM mode.
The CD/CDX option, press and hold preset button 1 (far left push-button), preset 6 button (far right pushbutton), and band button (AM/FM button). The HDD option, press and hold preset button 1 (far left pushbutton), preset 6 button (far right pushbutton), and Setup button (Config button). The NAV option, press and hold Navigation button, Destination button, and Audio button.

The following labels appear on the display.

SW PN
SIGNAL
SP TES (Speaker Test)
EXIT

Press the pushbutton positioned under the label to select.

The SW PN label displays the hardware number and the seven software module part numbers.

The SIGNAL label displays the AM/FM antenna signal strength and XM satellite 1 and 2 signal strength and terrestrial repeater signal strength.

The SP TES label displays the speaker test. The first speaker under test is displayed with an audible tone. The verbiage stating Multiple Press Changes Speaker is displayed. Pressing the pushbutton under SP TES selects the next speaker tested.

Pressing the pushbutton under the EXIT label exits the on-board diagnostic.