Scan Tool Data List
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 Chevrolet Tahoe, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
HVAC Scan Tool Data List
| Scan Tool Parameter | Data List | Units Displayed | Typical Data Value |
|---|---|---|---|
| Ignition: ON, Engine: OFF | |||
| Outside Air Temp. | Primary ECC Data | Degrees | 23°C (74°F) |
| Inside Air Temperature | Primary ECC Data | Degrees | 23°C (74°F) |
| Upper Outlet Temperature | Primary ECC Data | Degrees | Varies |
| Lower Outlet Temperature | Primary ECC Data | Degrees | Varies |
| Solar Sensor | Primary ECC Data | Counts | Varies |
| Blower Motor PWM Speed | Primary ECC Data | Percent | 50% |
| A/C Request | Primary ECC Data | NO/YES | NO |
| A/C LED On | Primary ECC Data | ON/OFF | ON |
| Recirc. LED | Primary ECC Data | ON/OFF | ON |
| Outside Air LED | Primary ECC Data | ON/OFF | ON |
| Rear Defog | Primary ECC Data | ON/OFF | ON |
| Mode Selection Position | Primary ECC Data | Bi-Level, Upper Outlets, Auto, Floor, Defog, Defrost | Floor |
| Mode Door Commanded | Primary ECC Data | Counts | Varies |
| Mode Door Actual | Primary ECC Data | Counts | Varies |
| Mode Door Max. Position | Primary ECC Data | Counts | Varies |
| Mode Door Min. Position | Primary ECC Data | Counts | Varies |
| Air Inlet Door Commanded | Primary ECC Data | Counts | Varies |
| Air Inlet Door Actual | Primary ECC Data | Counts | Varies |
| Air Inlet Door Max | Primary ECC Data | Counts | Varies |
| Air Inlet Door Min | Primary ECC Data | Counts | Varies |
| Air Mix Door Commanded | Primary ECC Data | Counts | Varies |
| Air Mix Door Actual | Primary ECC Data | Counts | Varies |
| Mix Door Max Position | Primary ECC Data | Counts | Varies |
| Mix Door Min Position | Primary ECC Data | Counts | Varies |
| Aux. Inside Air Temp. | Auxiliary ECC Data | Degrees | 23°C (74°F) |
| Aux. Upper Outlet Temp. | Auxiliary ECC Data | Degrees | Varies |
| Aux. Lower Outlet Temp. | Auxiliary ECC Data | Degrees | Varies |
| Aux. Blower Motor PWM | Auxiliary ECC Data | Percent | 50% |
| Aux. Mix Door Commanded | Auxiliary ECC Data | Counts | Varies |
| Aux. Mix Door Actual | Auxiliary ECC Data | Counts | Varies |
| Aux. Mix Door Max. Position | Auxiliary ECC Data | Counts | Varies |
| Aux. Mix Door Min. Position | Auxiliary ECC Data | Counts | Varies |
| Aux. Mode Door Commanded | Auxiliary ECC Data | Counts | Varies |
| Aux. Mode Door Actual | Auxiliary ECC Data | Counts | Varies |
| Aux. Mode Door Max. Position | Auxiliary ECC Data | Counts | Varies |
| Aux. Mode Door Min. Position | Auxiliary ECC Data | Counts | Varies |
PCM Scan Tool Data List
| Scan Tool Parameter | Data List | Units Displayed | Typical Data Value |
|---|---|---|---|
| Engine Idling/Engine at Operating Temperature/Closed Throttle/Park or Neutral/Closed Loop/Accessories Off | |||
| A/C Clutch Feedback Signal | Engine Data 2 | ON/OFF | OFF |
| A/C Relay Command | Engine Data 2 | ON/OFF | Off |
| A/C Compressor Cycling Switch | Engine Data 2 | Normal/Low Press | Normal |
| A/C Request Signal | Engine Data 2 | NO/YES | No |
| A/C High Pressure Recirc | Engine Data 2 | Open/Closed | Open |