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

Navigation Radio Scan Tool Data Parameters

Parameter

System State

Expected Value

Description

Operating Conditions: Ignition ON/Engine OFF/Radio ON

Antenna Enable

--

Active

The scan tool displays Active/Inactive.

CD Changer

--

Not Connected

The scan tool displays Connected/Not Connected. The scan tool displays Connected when the radio receives Class 2 information from the CD changer.

Ign. Cycles Since last DTC

--

Numeric

The scan tool displays 0-225 Cycles. The number of ignition cycles since a current DTC was set.

Personalization Status

--

Varies

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

Signal Strength

--

51 dB

The scan tool displays the strength of the received signal in dB.

Source Status

--

Varies

The scan tool displays Off/Tuner/Radio Monitor/Cassette/CD/RDS Interrupt/ICDX/CD Changer/Phone Stereo/MD Changer/Single MD/Nav Voice Stereo/Enhanced Stereo/AD Stereo/Phone Mono/Nav Voice Mono/Enhanced mono/AD Mono/RSE Stereo/DRR Tuner. This is the current source/type of the signal being received/played.

Theft Armed

--

Learned VIN

The scan tool displays Learned VIN/No VIN. The Scan tool displays Learned VIN when the theft mode has been turned ON by recognizing a valid VIN.

Theft Lock

--

Unlocked

The scan tool displays Locked/Unlocked. The scan tool displays Unlocked when the radio receives the correct VIN information from the PCM via Class 2.

Navigation Radio Scan Tool Output Controls

Output Control

Description

Antenna

This control will turn ON and OFF the GPS antenna for the navigation radio.

Left Front Speakers

Commanding the speaker ON will turn OFF all speakers except this speaker. Commanding the speaker OFF will turn OFF all speakers.

Left Rear Speakers

Commanding the speaker ON will turn OFF all speakers except this speaker. Commanding the speaker OFF will turn OFF all speakers.

Right Front Speakers

Commanding the speaker ON will turn OFF all speakers except this speaker. Commanding the speaker OFF will turn OFF all speakers.

Right Rear Speakers

Commanding the speaker ON will turn OFF all speakers except this speaker. Commanding the speaker OFF will turn OFF all speakers.

Vin Relearn

This commands the navigation radio module to relearn the vehicle vin.