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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 this 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 4. If resistance is not 3500-6500 ohms, replace TPS. If resistance is as specified, go to next step
  2. Check resistance between specified TPS terminals. See TPS TERMINAL ID  table. 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.
    TPS TERMINAL IDENTIFICATION

    Application Terminals No.
    All Models 2 & 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 Eclipse, go to step 7. On Galant, disconnect TPS connector. Using DVOM, check continuity between chassis ground and specified TPS connector terminal. See TPS CONNECTOR GROUND CIRCUIT ID  table. If continuity does not exist, repair wiring harness as necessary. If continuity exists, go to next step.
    TPS CONNECTOR GROUND CIRCUIT ID

    Application Terminal No.
    All Models 4
  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 ID  table. If continuity does not exist, repair wiring harness as necessary. If continuity exists, go to next step.
    TPS TO ECM WIRING HARNESS TERMINAL ID

    Application TPS Terminal No. ECM Terminal No.
    Galant 1 64
    2 61
  6. Check voltage between chassis ground and specified TPS connector terminal. See TPS VOLTAGE CIRCUIT ID  table. If voltage is not 4.8-5.2 volts, replace ECM. If voltage is as specified, condition required to set fault is not present at this time. Test is complete. Intermittent problem may exist. TESTS W/O CODES article in this section.
    TPS VOLTAGE CIRCUIT ID

    Application TPS Terminal No.
    Galant 1
  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 ID  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 ID

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

    Application Terminal No.
    All Models 4
  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 ID  table. If continuity does not exist, repair wiring harness as necessary. If continuity exists, condition required to set fault is not present at this time. Test is complete. Intermittent problem may exist. See TESTS W/O CODES article in this section.
    ECM TO TPS HARNESS ID

    Application ECM Terminal No. TPS Terminal No.
    All Models 9 2
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