DTC P0121: Throttle Position Sensor Circuit Range/Performance: Diagnosis
CAUTION:
To prevent damage to scan tool, always turn the ignition switch to LOCK position before connecting or disconnecting scan tool.
NOTE:
If PCM is replaced, immobilizer code registration must be performed. See PROGRAMMING
.
For diagnostic procedure, see Fig 1 -Fig 7 .
For intermittent diagnosis, see INTERMITTENT DIAGNOSTIC TROUBLE CODES . For OBD-II drive cycle, other monitor pattern, see OTHER MONITOR under OBD-II DRIVE CYCLES. For PCM location, see Figure . For PCM connector terminal view, see Figure .
To identify circuits referenced in testing, see ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article in ELECTRICAL. For testing of systems or components, see SYSTEM & COMPONENT TESTING article. For adjustments, see ON-VEHICLE ADJUSTMENTS article. For removal and installation of components, see REMOVAL & INSTALLATION article.