Scan Data
NOTE:
Information contained in the following tables 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 every 1 1/4 seconds. On systems using P-4 computers, parameter updates are more often. Not all devices & systems are used on all models.
FULL FUNCTION CARBURETED
| Tester Position | Units Measured | Nominal Data Value |
|---|---|---|
| A/C Request | Yes/No | No/Yes (with request) |
| AIR Divert Sol. | On/Off | On (air to switching sol.) |
| " | " | Off (air to atmosphere) |
| AIR Switch. Sol. | On/Off | On (to exhaust manifold) |
| " | " | Off (to catalytic converter) |
| BARO | Volts | 3-4.5 |
| Battery Voltage | Volts | 13.5-14.5 |
| Can. Purge Sol. | On/Off | On engine cold (sometimes at idle) |
| Coolant Temp. | °C | 85-105° (normal temp.) |
| Cross Counts | Counts | 0-255 |
| EGR Solenoid | On/Off | On when energized |
| EGR Duty Cycle | 0-100% | 0/closed-100/fully open |
| ILC Solenoid | On/Off | On extended/Off retracted |
| Knock (ESC) | Counts | 0-255 |
| M/C Dwell | Degrees | 10-50° varying |
| O2 Sensor | Millivolts | 100 (lean) to 999 (rich) |
| Open/Closed Loop Status | OL/CL | Closed/Open during extended idle |
| Pressure Sensor | Volts | 3.0-4.5 (idle), 0-1 (WOT) |
| P/N Switch | P/N/RDL | Park/Neutral |
| PROM I.D. | PROM # | Original factory number |
| RPM | RPM | Spec. +/-25 RPM Drive (A/T) |
| " | " | Spec. +/-50 RPM Neut. (M/T) |
| TCC | On/Off | Off (On with command) |
| TPS | Volts | .5 (closed) to 5.0 (WOT) |
| Trouble Codes | Code # | No codes |
| VSS or MPH | MPH | 0-actual |