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.
PORT FUEL INJECTION
| Tester Position | Units Measured | Nominal Value | |||
|---|---|---|---|---|---|
| Engine Speed | RPM | 650-850 | |||
| Coolant Temp. | °C | 85-105° (norm. temperature) | |||
| Mani Air Temp. | °C | Varies with Air Temperature | |||
| Throttle Position | Volts | .33-.46 | |||
| LV8 | 0 | 70-80 | |||
| O2 Sensor | Millivolts | 100 (lean) to 900 (rich) | |||
| Injector Pulse Width | Milliseconds | 4.0-5.0 (Varies) | |||
| Spark Advance | Degrees | 20° | |||
| Mass Air Flow | GM/SEC | 4-7 | |||
| Fuel Integ. | Counts | (1) 110-138 | |||
| Block Learn | Counts | (1) 110-138 | |||
| Knock Signal | No/Yes | No | |||
| Idle Air Control | Counts (steps) | 10-30 | |||
| P/N Switch | P/N/RDL | Park/Neutral | |||
| Vehicle Speed | MPH, KPH | 0 (Zero) | |||
| TCC | On/Off | Off (On with command) | |||
| Battery Voltage | Volts | 13.8 Volts (Varies) | |||
| Exhaust Recirc. | % | 0 (Zero) | |||
| A/C Request | On/Off | OFF | |||
| Brake Switch | No/Yes | No (Yes with brake pedal depressed) | |||
| Power Steering | High Press/Normal | Normal | |||
| QDM1 | High/Low | Low | |||
| QDM2 | High/Low | Low (High if A/C head pressure's high) | |||
| QDM3 | High/Low | Low (High w/brake pedal depressed | |||
| QDM4 | High/Low | Low | |||
| P/N | Yes/No | Yes | |||
| 2nd Gear | Yes/No | No | |||
| 3rd Gear | Yes/No | No | |||
| 4th Gear | Yes/No | No | |||
| PROM ID | Numbers | Internal ID Only | |||
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