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Code 14: Throttle Position Sensor

NOTE: For component terminal identification, see TERMINAL IDENTIFICATION  . For wiring diagrams, see WIRING DIAGRAMS article in the ENGINE PERFORMANCE Section.
  1. If using scan tester, go to step 3). Disconnect Throttle Position Sensor (TPS) connector. Using DVOM, check resistance between TPS terminals No. 1 and No. 4. If resistance is not 3500-6500 ohms, replace TPS. If resistance is as specified, go to next step.
  2. Check resistance between TPS terminals No. 1 & 3 (3.0L) or terminals NO. 2 & 4 (All Other Models). While monitoring DVOM, slowly open throttle from idle to fully open position. If resistance does not change smoothly, replace TPS. If resistance changes smoothly, go to step 4).
  3. Turn ignition switch to ON position. Using scan tester, read Throttle Position Sensor (TPS) voltage. With throttle at idle, voltage should read .3-1.0 volt. Voltage should increase while slowly opening throttle. At wide open throttle, voltage should read 4.5-5.5 volts. If voltage is not as specified, replace TPS. If voltage is as specified, go to next step.
  4. On 2.4L - 4WD and 3.0L models, go to step 7). On all other models, disconnect TPS connector. Using DVOM, check continuity between chassis ground and TPS connector terminal No. 4. If continuity does not exist, repair wiring harness as necessary. If continuity exists, go to next step.
  5. Disconnect TPS connector and ECM connector. Check for continuity between specified TPS connector terminal and ECM connector terminal. See TPS-TO-ECM WIRING HARNESS TERMINAL IDENTIFICATION  table. If continuity does not exist, repair wiring harness as necessary. If continuity exists, go to next step.
    TPS-TO-ECM WIRING HARNESS TERMINAL IDENTIFICATION

    Application TPS Terminal No. ECM Terminal No.
    2.4L - RWD 1 64
    2 61
  6. Check voltage between chassis ground and TPS connector terminal No. 1 (2.4L-RWD). If voltage is not 4.8-5.2 volts, replace ECM. If voltage is as specified, condition required to set trouble code is not present at this time. Test is complete. Intermittent problem may exist. See TESTS W/O CODES article in the ENGINE PERFORMANCE Section.
  7. Disconnect TPS connector. Turn ignition switch to ON position. Using DVOM, check voltage between chassis ground and specified TPS connector terminal. See TPS VOLTAGE SUPPLY IDENTIFICATION  table. If voltage is not 4.8-5.2 volts, repair wiring harness as necessary. If voltage is as specified, go to next step.
    TPS VOLTAGE SUPPLY IDENTIFICATION

    Application TPS Terminal No.
    2.4L - 4WD 4
    3.0L 1
  8. Check continuity between chassis ground and specified TPS connector terminal. See TPS CONNECTOR GROUND CIRCUIT IDENTIFICATION  table. If continuity does not exist, repair wiring harness as necessary. If continuity exists, go to next step.
    TPS CONNECTOR GROUND CIRCUIT IDENTIFICATION

    Application TPS Terminal No.
    2.4L - 4WD 4
    3.0L 1
  9. With TPS connector and ECM connector disconnected, check for continuity between specified TPS connector terminal and ECM connector terminal. See ECM-TO-TPS HARNESS IDENTIFICATION  table. If continuity does not exist, repair wiring harness as necessary. If continuity exists, condition required to set trouble code is not present at this time. Test is complete. Intermittent problem may exist. See TESTS W/O CODES article in the ENGINE PERFORMANCE Section.
ECM-TO-TPS HARNESS IDENTIFICATION

Application ECM Terminal No. TPS Terminal No.
2.4L - 4WD 9 2
3.0L 19 3
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