P0123

Tests 129 - 133:

Tests 134 - 138:

SYMPTOM
P-0123 THROTTLE POSITION SENSOR VOLTAGE HIGH

WHEN MONITORED
With the ignition on.

SET CONDITION
TP sensor voltage at PCM cavity 35 goes above 4.5 volts for 0.704 seconds.

POSSIBLE CAUSES
- TPS ground circuit open
- TPS wiring harness intermittent defect
- TPS wiring harness observable defect
- TPS signal circuit shorted to voltage
- PCM defective (TPS)
- TPS voltage below 1.0 volt
- TPS voltage change not smooth
- TPS signal circuit open
- TPS signal ckt shorted to 5-volt supply circuit