Late Production (NGC)

Test 1 - 2:

Test 3 - 6:

Test 7 - 8:

SYMPTOM
P0123-THROTTLE POSITION SENSOR #1 HIGH

WHEN MONITORED
With the ignition on. Battery voltage greater than 10 volts.

SET CONDITION
Throttle Position Sensor voltage at the PCM is greater than 4.47 volts. One Trip Fault.

POSSIBLE CAUSES
- Throttle position sensor sweep
- Intermittent condition
- (K22) TP signal circuit shorted to (K6) 5 volt supply circuit
- (K22) TP signal circuit shorted to battery voltage
- TP sensor internal failure
- (K22) TP signal circuit open
- (K4) sensor ground circuit open
- PCM