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Scan Tester - Test Data Parameters

NOTE: Information in the following tables is typical 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 virtually instantaneous. Not all devices & systems are used on all models.
THROTTLE BODY INJECTION

Tester Position Units Measured Nominal Data Value
A/C Clutch On/Off Off (On with A/C).
A/C Request Yes/No No/Yes (with request).
AIR Divert Solenoid On/Off On (air to switching sol.).
AIR Divert Solenoid On/Off Off (air to atmosphere).
AIR Switching Solenoid On/Off On (to exhaust manifold).
AIR Switching Solenoid On/Off Off (to catalytic converter).
BARO Volts 3-4.5.
Battery Voltage Volts 13.5-14.5.
Block Learn Counts 118-138 (128 normal).
Brake Switch On/Off On when engaged.
Canister Purge Sol. On/Off On/engine cold (idle some).
Clear Flood On/Off ***See tester manual**.
Coolant Fan On/Off Off below 216°F (102° C).
Coolant Temp. °C 85-105° (norm.temperature).
Crank RPM RPM 100-900
Cross Counts Counts 0-255.
Cruise Control Switch On/Off when engaged.
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 Backup Yes/No Yes when engaged.
IAC Counts 0-50.
Ignition/Crank On/Off On with ignition/crank.
Injector Pulse Width Mil./Sec .8-3.0.
INT (Integrator) Counts 110-145 (128 normal)
Knock Retard (ESC) Counts 0-255.
Knock Signal Yes/No Yes when knock exists.
MAT Temperature °C 10-90°.
MAP Volts 1 (idle) to 4.5(WOT).
Open/Closed Loop Status Ol/Cl Closed/Open during extended idle.
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.
RPM RPM Spec. +/- 25 RPM Drive (Auto.).
RPM RPM Spec. +/- 50 RPM Neut. (man.).
Spark Advance # of Deg. Varies.
TCC On/Off Off (On with command).
TPS Volts 1.25 (idle) to 5.0 (WOT).
Throttle Angle 0-100% 0 (idle) to 110 (WOT).
Trouble Codes Code # No Codes.
Turbo Boost On/Off On when activated.
Upshift Light (Man. Trans.) On/Off Off
VSS MPH 0-actual.
3rd Gear Switch On/Off On/3rd & 4th gear.
4th Gear Switch On/Off On/4thgear.