P0123

Test 1:

Tests 2 - 5:

Tests 6 - 9:

Tests 10 - 11:

SYMPTOM
P0123 - THROTTLE POSITION SENSOR VOLTAGE TOO HIGH

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

SET CONDITION
TP sensor voltage at PCM goes above 4.5 volts for 3.2 seconds.

POSSIBLE CAUSES
- Throttle position sensor ground circuit open
- Throttle position sensor signal circuit open
- TPS wiring harness intermittent defect (RPM)
- Powertrain Control Module
- Throttle position sensor (A)
- Throttle position sensor (b)
- Signal circuit shorted to voltage or S/C switch signal circuit
- TPS signal circuit shorted to 5 volt supply circuit
- TPS wiring harness intermittent defect (voltage)
- TPS wiring harness observable defect