P0123

Tests 1 - 2:

Tests 3 - 7:

Tests 8 - 10:

SYMPTOM
P0123 THROTTLE POSITION SENSOR VOLTAGE HIGH

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

SET CONDITION
TPS voltage at PCM goes above 4.9 volts for 3.2 seconds.

POSSIBLE CAUSES
- Throttle position sensor ground circuit open
- TPS wiring harness intermittent defect
- TPS wiring harness observable defect
- TPS signal circuit shorted to 5-volt supply circuit
- Powertrain control module (TC-27A)
- Throttle position sensor (voltage change)
- TPS (voltage < 1.0 volt)
- Throttle position sensor signal circuit open
- TPS signal circuit shorted to voltage