GM Service Manual Online
For 1990-2009 cars only
Table 1: Radio Scan Tool Data Parameters
Table 2: Radio Scan Tool Output Controls

Radio Scan Tool Data Parameters

Parameter

System State

Expected Value

Definition

Operating Conditions: Ignition ON

Antenna Enable

--

Active

The scan tool displays Active or Inactive. This parameter indicates if the navigation radio has enabled the GPS antenna.

Balance Control

--

Varies

The scan tool displays a numeric value. This is the current value of the balance control.

Band Status

--

Varies

The scan tool displays AM/FM1/FM2/XM1/XM2. This is the current band setting.

Bass Control

--

Varies

The scan tool displays %. This is the current percentage of the bass control.

Battery Voltage Signal

--

Varies

The scan tool displays Volts. This is the current battery voltage.

DRR

--

Varies

The scan tool displays Present or Not Present. Present is displayed if a digital radio receiver is properly installed or programmed on the vehicle.

Fade Control

--

Varies

The scan tool displays a numeric value. This is the current fade control value.

Ign. Cycles Since last DTC

--

Varies

The scan tool displays the number of ignition cycles since the last DTC.

Mid Range Control

--

Varies

The scan tool displays %. This is the current percentage of the mid range control.

Personalization Status

--

Varies

The scan tool displays Unknown, Driver 1, Driver 2. This is the current driver.

Phone Signal

--

Present

The scan tool displays Present or Not Present. This indicates if the radio detects the vehicle is equipped with OnStar.

Power Mode

--

Varies

The scan tool displays Run,Crank, RAP, Off Awake, Unlock, RAP Unlock and Off Awake. This is the current state of the ignition cylinder.

Signal Strength

--

Varies

The signal strength of the currently tuned station is measured in dBuV.

Source Status

--

Varies

The scan tool displays Unknown, Radio Off, Tuner, CD, RDS Interrup, CDX, Aux. Device, Phone or DRR Tuner. This is the current source/type of the signal being received/played.

Theft Armed

--

Learned VIN

The scan tool displays Learned or Not Learned. This shows whether the VIN is learned in the theft module.

Theft Armed

--

Learned

The scan tool displays Learned or Not Learned.

Theft Lock Status

--

Inactive

The scan tool displays Active or Inactive. This is the current state of the theft module.

Treble Control

--

Varies

The scan tool displays %. This is the current treble percentage.

Volume Control

--

Varies

The scan tool displays &. This is the current volume control percentage.

Radio Scan Tool Output Controls

Scan Tool Output Control

Description

Optional Modules

Configures for Disc player and video display, Digital Radio Receiver, Steering wheel controls, Vehicle Communication Interface Module. This will synchronize the optional modules to the radio.

Region Code Options

The scan tool will provide selection for Region Code Options for North America, Middle East and South America. This is the current region code of the radio.

VIN Relearn

The scan tool will do a VIN Relearn. Enters the correct VIN information in the radio