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 | ||
|---|---|---|---|---|
| Desired RPM | RPM | ECM idle command (Varies with temperature) | ||
| RPM | RPM | --> ± 50 RPM from desired RPM in DRIVE (A/T) --> ± 100 RPM from desired RPM in Neutral (M/T) | ||
| Coolant Temp. | C° | 85° - 105° | ||
| MAT Temp. | C° | 10° - 90° (Depends on under- hood temperature) | ||
| MAP | Volts | 1 - 2 (Depends on Vac. & Baro. pressure) | ||
| Base Pulse Width (BPW) | M/Sec | .8 - 3.0 | ||
| O2 | Volts | .1 - 1 and varies | ||
| TPS | Volts | .4 - 1.25 | ||
| Throttle Angle | 0 - 100% | 0 | ||
| IAC | Counts (steps) | 1 - 50 | ||
| P/N Switch | P/N and RDL | Park/Neutral (P/N) | ||
| INT (Integrator) | Counts | 110 - 145 | ||
| BLM (Block Learn) | Counts | 118 - 138 | ||
| Open/Closed Loop | Open/Closed | Closed Loop (May go open with extended idle) | ||
| VSS | MPH | 0 | ||
| TCC | ON/OFF | OFF (ON, with TCC commanded on) | ||
| Spark Advance | # of Degrees | Varies | ||
| Battery | Volts | 13.5 - 14.5 | ||
| Cooling Fan | ON/OFF | OFF (Coolant temperature below 102°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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