GM Service Manual Online
For 1990-2009 cars only

Radio Scan Tool Data Parameters

Parameter

Operating Conditions

Expected Value

Definition

Ignition is ON, engine OFF, and vehicle is stationary

Antenna

 

Main set

 

Bass

 

Standard

The scan tool displays the current bass setting.

Battery Voltage

--

12 Volts

This displays volts. This is the voltage input supplied to the digital radio receiver.

CD Status

--

OK

 

CD Status

 

Valid

The scan tool displays Valid or Invalid

Invalid

CD Type

 

CD

 

CD Changer Disc Number

 

1-6

This is the status of the CD changer.

Chime Mode

 

On

The scan tool displays On or OFF.

Off

Dial Type

 

Valid

The scan tool displays Valid or Invalid.

Invalid

Equalizer Boost

 

0

 

Equalizer

 

On

The scan tool displays On or OFF.

Off

Internal Communication

--

OK

 

Mute

Mute button pressed

On

The scan tool displays if the audio unit mute button has been activated or deactivated.

Mute button depressed

Off

Navigation System

--

Active

 

--

Inactive

Phone Active

--

Active

 

--

Inactive

Power Mode

--

Run

The scan tool displays Off, Accessory, Run or Crank Request. This is the state of the ignition switch.

Preset Status

 

1

The scan tool displays a preset number 1-6. This is the preset number when the radio is on a preset station.

Radio Button Stuck

--

Yes

This displays if a radio button is stuck

--

No

Radio Button

 

A/C Off

 

Radio Button Status

 

Released

 

Depressed

Singe CD Track Number

 

1

The scan tool displays the current track number on the CD.

Search Sensitivity Status

 

Auto

 

Manual

Signal Strength

--

Varies

This displays dBuV. This is the signal strength of the radio.

Speed Compensated Volume Curve

 

Zone 2

 

Source

--

Tuner

This indicates the source of the audio signal currently being output.

Surround Sound Status

--

On

 

--

Off

Surround Sound Status

 

Stereo

 

Mono

 

Treble

 

Standard

The scan tool displays the current treble setting.

Volume

0 - 100%

User Dependent

The scan tool displays the current volume setting.

Radio Scan Tool Output Controls

Parameter

Operating Conditions

Definition

Ignition is ON, engine OFF, and vehicle is stationary

Audio Mute

Special Functions Output Control

The scan tool displays if the audio unit mute button has been activated or deactivated.

 

Left Front Speaker

Special Functions Front Speakers

The scan tool commands the speaker ON will turn OFF all speakers except this speaker. Commanding the speaker OFF will turn OFF all speakers.

Left Rear Speaker

Special Functions Rear Speakers

The scan tool commands the speaker ON will turn OFF all speakers except this speaker. Commanding the speaker OFF will turn OFF all speakers.

Right Front Speaker

Special Functions Front Speakers

The scan tool commands the speaker ON will turn OFF all speakers except this speaker. Commanding the speaker OFF will turn OFF all speakers.

Right Rear Speaker

Special Functions Rear Speakers

The scan tool commands the speaker ON will turn OFF all speakers except this speaker. Commanding the speaker OFF will turn OFF all speakers.