Note. For circuit reference, see DTC P0105 schematic.
Circuit Description
The TP sensor is self-adjusting. When ignition is turned off, PCM executes a TP sensor learn routine. If the same correction factor occurs on 2 consecutive key off cycles, TP sensor is corrected to zero degrees, using the correction factor learned.
This test checks to see if initial TP sensor learn values have been stored in the PCM. If these values have not been stored, DTC will set. Performing the TP sensor learn procedure in this test will cause DTC to become history code.