Total FT #1
for fuel trim
system of bank
1/
Min.: -0.5 V,
Max.: 0.496 V
-0.2 to 0.2: Idling
-
Total FT #2
Total fuel trim
of bank 2
Average value
for fuel trim
system of bank
2/
Min.: -0.5 V,
Max.: 0.496 V
-0.2 to 0.2: Idling
-
Short FT #1
Short-term fuel
trim of bank 1/
Min.:-100%,
Max.: 99.2%
-20 to +20%
This item refers to the short-term fuel
compensation used to maintain the air fuel
ratio at stoichiometric air-fuel ratio
Long FT #1
Long-term fuel
trim of bank 1/
Min.:-100%,
Max.: 99.2%
-20 to +20%
This item refers to the overall fuel
compensation carried out in long-term to
compensate a continual deviation of the
short-term fuel trim from the central value
Short FT #2
Short-term fuel
trim of bank 2/
Min.: -100%,
Max.: 99.2%
-20 to +20%
This item refers to the short-term fuel
compensation used to maintain the air fuel
ratio at stoichiometric air-fuel ratio
Long FT #2
Long-term fuel
trim of bank 2/
Min.:-100%,
Max.: 99.2%
-20 to +20%
This item refers to the overall fuel
compensation carried out in long-term to
compensate a continual deviation of the
short-term fuel trim from the central value
Fuel System
Status (Bank 1)
Fuel system
status (bank 1)/
OL, CL, OL
Drive, OL Fault
or CL Fault
CL: Idling after
warming up
OL (Open Loop): Has not yet
satisfied conditions to go closed
loop
CL (Closed Loop): Using heated
oxygen sensor as feedback for fuel
control
OL Drive: Open loop due to driving
conditions (fuel enrichment)
OL Fault: Open loop due to
detected system fault
CL Fault: Closed loop but heated
oxygen sensor, which used for fuel
control malfunctioning
OL (Open Loop): Has not yet
satisfied conditions to go closed
loop
2008 Toyota Tundra
2008 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Tundra