SCAN DATA
Note. Information contained in SCAN DATA is typical of readings taken on vehicle with engine idling, upper radiator hose hot, closed throttle, transmission in Park or Neutral, "closed loop" status achieved and all accessories off (except as noted in tables). Data parameters are updated a minimum of every 1 1/4 seconds, more often on most models. Not all devices and systems are used on all models; following lists only represent most commonly used parameters. For additional information, refer to owner manual furnished with tester.
| Tester Position | Units Measured | Nominal Value |
|---|---|---|
| A/C Clutch | On/Off | On With A/C |
| A/C Request | Yes/No | Yes With Request |
| BARO | Volts | 3.0-4.5 |
| Battery Voltage | Volts | 13.5-14.5 |
| Brake Switch | App/Rel | Applied with Brakes On |
| Canister Purge Sol. | On/Off | On/Engine Cold (Idle Some) |
| Clear Flood | On/Off | See Tester Manual |
| Coolant Fan(s) | On/Off | On With Command |
| Coolant Temp. | °C | 85-105° (Norm. Temperature) |
| Crank RPM | RPM | 100-900 |
| Cross Counts | Counts | 0-255 |
| EGR Solenoid | On/Off | On When Energized |
| EGR Duty Cycle | 0-100% | 0/Closed; 100/Fully Open |
| Fan Relay | On/Off | On When Energized |
| Fan Request | On/Off | On With Request |
| Fuel Back-Up | Yes/No | Yes When Engaged |
| Fuel Trim (ST) | Counts | 110-150 ( (1) 128 Normal) |
| Fuel Trim (LT) | Counts | 110-150 ( (1) 128 Normal) |
| IAC | Counts | 0-50 |
| Ignition/Crank | On/Off | On With Ignition/Crank |
| Injector Pulse Width | Mil./Sec | .8-3.0 |
| Intake Air Temp. | °C | 10-90° |
| Knock Retard | Counts | 0-255 |
| Knock Signal | Yes/No | Yes When Knock Exists |
| MAP | Volts | 1.0 (Idle) to 4.5 (WOT) |
| "Open/Closed Loop Status" | Ol/Cl | Closed/Open During |
| O2 Sensor | Millivolts | 100 (Lean) To 999 (Rich) |
| P/N Switch | P/N/RDL | Park/Neutral |
| P/S Switch | Norm/Hi | Normal |
| PROM I.D. | PROM # | Original Factory Number |
| QDM | Hi/Lo | Lo Energized |
| RPM | RPM | Spec. +/-25 RPM Drive (A/T) |
| RPM | RPM | Spec. +/-50 RPM Neut. (M/T) |
| Spark Advance | Degrees | Varies |
| TCC | On/Off | Off (On With Command) |
| TP Sensor | Volts | 1.00 (Idle) To 5.00 (WOT) |
| Throttle Angle | 0-100% | 0 (Idle) To 100 (WOT) |
| Throttle Switch | Open/Closed | Open At Off Idle |
| Trans. Fluid Temp. | °C | 100 (Normal) |
| Trouble Codes | Code No. | No Codes |
| Upshift Light (M/T) | On/Off | Off |
| VSS Or MPH | MPH | 0-Actual |
| 1st Gear Switch | On/Off | On/1st Gear Only |
| 3rd Gear Switch | On/Off | On/3rd & 4th Gear |
| 4th Gear Switch | On/Off | On/4th Gear |
| (1) Long Term (LT) fuel trim has a tendency to follow Short Term (ST) fuel trim. Extended idle may drive ST fuel trim to read less than 100 counts. | ||
| (1) | Long Term (LT) fuel trim has a tendency to follow Short Term (ST) fuel trim. Extended idle may drive ST fuel trim to read less than 100 counts. |
SCAN DATA