Scan Data - Typical Data Values
The "Scan Data" listed in the table may be used for comparison, after completing the Diagnostic Circuit Check and finding the on-board diagnostics functioning properly and no trouble codes displayed. The "Typical Values" are an average of display values recorded from normally operating vehicles and are intended to represent what a normally functioning system would typically display.
NOTE:
All readings at idle, with upper radiator hose hot, closed throttle, PARK or Neutral, Closed Loop, and all accessories OFF.
SCAN DATA - TYPICAL DATA VALUES (1)
| "Scan" Position | Units Displayed | Typical Data Values | ||
|---|---|---|---|---|
| Engine RPM | RPM | --> ± 50 RPM from desired RPM in DRIVE (A/T) --> ± 100 RPM from desired RPM in Neutral (M/T) | ||
| Desired RPM | RPM | ECM idle command (Varies with temperature) | ||
| Coolant Temperature | °F/°C | 185-221°F (85-105°C) | ||
| IAT/MAT | °F/°C | 50-194°F (10-90°C) Depends on underhood temperature | ||
| MAP | kPa/Volts | 29-48 kPa 1-2 Volts (Depends on manifold vacuum and barometer pressure) | ||
| Open/Closed Loop | Open/Closed | Closed Loop (May go open with extended idle) | ||
| Throttle Position | Volts | 0.35-1.33 | ||
| Throttle Angle | 0-100% | 0 | ||
| O2 | Millivolts | 100-999 (varies continuously) | ||
| Injector Pulse Width | Milliseconds | 0.8-3.0 | ||
| Spark Advance | Degrees | Varies | ||
| Fuel Integrator | Counts | 100-160 | ||
| Block Learn | Counts | 116-140 | ||
| Idle Air Control | Counts (Steps) | 1-50 | ||
| Park/Neutral | P-N and P-DL | Park/Neutral (P/N) | ||
| MPH/KPH | 0-255 | 0 | ||
| TCC | ON/OFF | OFF (ON, with TCC commanded on) | ||
| Ign/Batt Voltage | Volts | 13.5-14.5 | ||
| Cooling Fan Relay | ON/OFF | OFF (Coolant temperature below 212°F (100°C) | ||
| A/C Request | YES/NO | NO (YES, with A/C requested) | ||
| A/C Clutch | ON/OFF | OFF (ON, with A/C commanded on) | ||
| Power Steering | Normal/High Pressure | Normal | ||
| Shift Light (M/T) | ON/OFF | OFF | ||
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