Displaying CCM Data

CCM can display data used to determine control decisions. Data may be useful in determining if a system is properly operating and/or sending correct data to CCM.
To enter display CCM data function, press TRIP/ODO (next test) button on DIC until "1.2" displays on trip monitor. Press ENG/MET (next value) button until identifying number for data value is displayed in the first 2 digits of odometer. See CCM DATA IDENTIFICATION NUMBER table. Press FUEL INFO (previous value) button to go backward in the list.
Data value is displayed in the last 3 digits of odometer. Data values are different for each system data. See CCM DATA IDENTIFICATION NUMBER table.

CCM DATA IDENTIFICATION NUMBER

Data ID No.

Data (Value)

Fuel Level (Gallons, Tenths)

02 ⁽¹⁾

Dimming Potentiometer (A/D Counts)

Ambient Light Sensor (A/D Counts)

04 ⁽²⁾

Rear Defogger Timer (Seconds)

Vehicle Speed (MPH)

PASS-Key(R) (Key A/D Counts)

Ignition Voltage (Volts, Tenths)

Switched Battery Voltage (Volts, Tenths)

Cluster Incandescent Light Dimming PWM (0-100%)

Cluster LCD Backlight Lights Dimming PWM (0-100%)

Radio & Climate Control LCD Dimming PWM (0-100%)

LED Dimming PWM (0-100%)

Oil Monitor Effective Revolution (0-200 - LT1 & 0-250 - LT5, 100,000 Revolutions Per Count)

CCM Software Version ⁽³⁾

⁽¹⁾	Headlights or parking lights must be on.

⁽²⁾	Engine must be running.

⁽³⁾	Version number identification. Data for ID No. 14 will not be displayed on vehicle odometer due to length of version number. See Fig 1 .

Fig 1: CCM Software Version Number ID (Corvette)

Courtesy of GENERAL MOTORS CORP.