P0120

Test 241-247:

Test 248-251:

Test 252-253:

SYMPTOM:
P0120-THROTTLE POSITION SIGNAL
When Monitored and Set Condition:
P0120-THROTTLE POSITION SIGNAL
When Monitored: Whenever the engine is running. The following conditions must be met for a successful OBDII trip: Engine must run > 2 mins, Turbine speed > 600 RPM, if trans is below normal operating temp, all fwd gears must be applied for 3.5 secs each and trans must
Set Condition: be in park or neutral for 3.5 secs. If trans is hot, all fwd gears must be applied for 1.5 secs each and trans must be in park or neutral. No MIL lamp trouble codes have occurred or recurred.

POSSIBLE CAUSES
- CHECKING SYMPTOMS AND POSSIBLE CAUSES
- LOW BATTERY VOLTAGE CAUSING SYMPTOM
- THROTTLE POSITION SENSOR CHECK ENGINE LAMP ON
- 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 P012