P0123

Tests 153 - 157:

Tests 158 - 163:

SYMPTOM
P0123 - THROTTLE POSITION SENSOR VOLTAGE TOO HIGH

WHEN MONITORED
With the ignition ON and battery voltage above 10.4 volts.

SET CONDITION
Throttle position sensor voltage at the PCM goes above 4.5 volts for 0.7 seconds.

POSSIBLE CAUSES
- TPS voltage change not smooth
- TPS connectors/harness intermittent defect (D)
- TPS harness/connectors intermittent defect (C)
- TPS harness/connectors observable defect (E)
- Throttle position sensor ground circuit open
- TPS signal or S/C switch signal circuit shorted to voltage
- Throttle position sensor signal circuit open
- TPS signal circuit shorted to 5 volt supply circuit
- TPS defective (voltage < 1.0 volt)
- Powertrain control module defective