P0120

Tests 175 Through 181:

Test 182 Through 185:

Test 186 And 187:

SYMPTOM:
P0120-THROTTLE POSITION SIGNAL

WHEN MONITORED:
Whenever the engine is running.

SET CONDITION:
This code is set if the throttle angle goes out of range or if throttle angle changes abruptly (i.e., faster than the throttle body motion could occur)

POSSIBLE CAUSES
THROTTLE POSITION SENSOR CHECK ENGINE LAMP ON
CHECKING SYMPTOMS AND POSSIBLE CAUSES
LOW BATTERY VOLTAGE CAUSING SYMPTOM
TCM GROUND CIRCUIT OPEN
WIRES BETWEEN TPS AND TCM INTERMITTENT
TCM THROTTLE POSITION SENSOR INPUT SHORTED
TPS SENSOR GROUND CIRCUIT OPEN
TPS SIGNAL CIRCUIT OPEN
TPS VOLTAGE CHANGE NOT SMOOTH
INTERMITTENT CODE P0120