Appendix, Scan parameters – Associated Equipment GM L36 User Manual
Page 26
Page 26
Appendix
Scan Parameters
Please note that not every vehicle will support every parameter. For example, most V6-equipped
vehicles do not have a passenger-side O2 sensor; therefore, codes such as LFT2 & O2R will return
“T.O.” (timeout). The engine type selected on the Config screen will also determine which parameters
are available on the screen when you’re configuring the scanner.
Standard OBD2 Parameters: (supported by all compatible vehicles except as stated above)
Parameter Description Typical
Value
B
Boost (L67 only)
0 to 10 PSI at wide-open throttle
CLSD Closed-loop
status 0 (open loop) when cold
1 (closed loop) after engine
warms up
ECT
Engine coolant temperature
185-220 deg F
IAT
Intake air temperature
Depends on the weather; rises
above ambient as engine warms
up
IGN
Ignition advance
Varies: 15-20 degrees at idle, 20-
30 at full throttle
LD
Engine load (calculated by
the vehicle’s computer)
0-100%, depending on conditions.
2 or 3% or so at idle.
LFT1
LFT2
Long-term fuel trim, driver’s
side & passenger side
-10 to +10%
Zero after battery change or
vehicle computer reset
MAF
Mass air flow
From 0.5-1 lb/min at idle to 30-
35 at full throttle
MAP
Manifold air pressure
9-10”Hg at idle to near 30 at full
throttle
O2L
O2R
Oxygen sensor, driver’s side
Oxygen sensor, passenger
side
Should move around a lot after
engine warms up; 850mV to
950mV at full throttle
RPM
Engine speed
600-700 at warm idle, up to 6000
or more before shifts at full
throttle
SPD
Vehicle speed
Should match speedometer
SFT1
SFT2
Short-term fuel trim, driver’s
side & passenger side
-10 to +10%
Zero after battery change or
vehicle computer reset