Celica GT Liftback L4-2164cc 2.2L DOHC (5S-FE) MFI (1999)
DETECTING CONDITIONS
HINT:
-
When the DTC P0171 is recorded, the actual air-fuel ratio is on the LEAN side. When DTC P0172 is recorded, the actual air-fuel ratio is on the
RICH side.
-
If the vehicle runs out of fuel, the air-fuel ratio is LEAN and DTC P0171 is recorded. The MIL then comes on.
-
If the total of the short-term fuel trim value and long-term fuel trim value is within +/- 38 %, the system is functioning normally.
-
The oxygen sensor output voltage and the short-term fuel trim value can be read using the OBD II scan tool or TOYOTA hand-held tester.
Step 1
Step 2
Step 3