Throttle Position (TP) Sensor
DESCRIPTIONIs a potentiometer mounted on the throttle body. The throttle position sensor detects the position of the throttle plate and sends this information to the powertrain control module as a varying voltage signal. If a malfunction occurs in the TP sensor circuit, the powertrain control module will recognize that the TP sensor signal is out of specification. The powertrain control module will then operate the AX4S transaxle in a high capacity mode to prevent transaxle damage. The powertrain control module also uses this signal for shift scheduling, EPC pressure control, torque converter clutch control.
SYMPTOMS
Harsh engagements, firm shift feel, abnormal shift schedule, torque converter clutch does not engage, torque converter clutch cycling.
DTCs
P0122, P0123, P1120