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DTC P0510 - CLOSED THROTTLE POSITION (IDLE) SWITCH MALFUNCTION Hyundai Sonata III рестайлинг

Testing & Diagnostics ~444 words
  1. Idle switch is part of TP sensor. Install scan tool. Turn ignition on and check for DTCs. If DTC P0510 is present, go to next step. If DTC P0510 is not present, problem is intermittent. See INTERMITTENTS in «TESTS W/O CODES»(ref-16659) article.
  2. Turn ignition off. Disconnect Throttle Position (TP) sensor harness connector. Turn ignition on. Using a DVOM, check voltage at TP sensor harness connector terminal No. 4 and ground. DVOM should read 4.8-5.2 volts. If voltage is as specified, go to next step. If voltage is not as specified, check circuit between TP sensor harness connector terminal No. 4 and ECM. See appropriate wiring diagram in «WIRING DIAGRAMS»(ref-16646) article.
  3. Turn ignition off. Using a DVOM, check continuity between TP sensor harness connector terminal No. 1 and ground. If continuity is present, go to next step. If continuity is not present, check circuit between TP sensor harness connector terminal No. 1 and ECM.
  4. Unplug ECM harness connector. Using a jumper wire, jumper ECM harness connector terminal No. 20 to ground. Connect DVOM to TP sensor harness connector terminal No. 3 and ground. If continuity is present, go to next step.If continuity is not present, check circuit between TP sensor harness terminal No. 3 and ECM harness connector terminal No. 20. Test same wire for short to ground or to another wire. Repair as necessary.
  5. Reconnect ECM harness connector. Turn ignition on. Using DVOM, check voltage between TP sensor harness connector terminal No. 2 and ground. DVOM should read 4 volts or greater. If voltage is as specified, go to next step. If voltage is not as specified, repair circuit between TP sensor harness connector terminal No. 2 and ECM.
  6. Check resistance between TP sensor terminals No. 1 and 4. If resistance is not 3500-6500 ohms, replace TP sensor. If resistance is 3500-6500 ohms, connect ohmmeter between sensor terminals No. 1 and 3. Observe ohmmeter while opening throttle. Ohmmeter indication should change smoothly according to throttle position. If ohmmeter indication does not change smoothly according to throttle position, replace TP sensor. If ohmmeter indication changes smoothly according to throttle position, go to next step.
  7. Connect DVOM to TP sensor connector terminals No. 1 and 2. With throttle depressed, no continuity should be present. With throttle released, continuity should be present. If continuity is not as specified, replace TP sensor. If continuity is as specified, go to next step.
  8. Temporarily substitute with a known-good TP sensor, then retest system. If TP sensor is okay, temporarily substitute with a known-good ECM. Clear DTC. See CLEARING CODES under Self Diagnostic System section. Retest system. If DTC resets, replace ECM.

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