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SCAN-DIY CR-PRO User’s Manual
Fuel System Status
Information describing the operation of the fuel control.
Open loop
Operating condition during engine warm up/idle in which the
fuel mixture isn’t being corrected to compensate for a rich/lean condition.
Closed Loop
Operating condition in which the fuel mixture is being
corrected for a rich/lean condition.
OL Drive
Vehicle in Open Loop due to driving conditions (power
enrichment, deceleration).
OL Fault
Vehicle in Open Loop due to a detected system fault.
CL O2 Fault
Vehicle in Closed Loop, but a fault with at least one oxygen
sensor may be using simple oxygen sensor for fuel control.
Ignition Timing Advance Range: 64 to 63.5
The relationship between ignition timing and top dead center, displayed in
crankshaft degrees.
3.1.3.2OBDII
G
ENERIC
O
PERATIONAL
D
ATA
I
TEMS
(C
ONT
.)
Intake Air Temperature Range: 40 C to 215 C
Temperature of the air drawn through a cleaner and distributed to each
cylinder for use in combustion.
Intake Manifold Pressure Range: 10 to 105 kPa, or 0 to 5 Volts
The manifold absolute pressure displayed in kilopascals or volts. A low
reading will indicate that the pressure is low (vacuum is high) and a high
reading will indicate that the pressure is high (vacuum is low).
Long Term Fuel Trim (Bank 1 / Bank 2)
Long Term adjustments to the Bank 1 fuel calibration schedule which
compensate for vehicle differences and gradual changes that occur over
time. Range: 100.00% to 99.92% (100% indicating a maximum lean
condition, 99.92% indicating a maximum rich condition, and 0% indicating
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