P0123

Tests 1 - 2:

Tests 3 - 7:

Tests 8 - 12:

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 3.2 seconds.

POSSIBLE CAUSES
- TRANS control module
- TPS voltage change not smooth
- TPS connectors/harness intermittent (D)
- TPS harness/connectors intermittent (C)
- TPS harness/connectors observable (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 (voltage < 1.0 volt)
- Powertrain control module