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10. Release the throttle valve. Does the throttle valve return? YES - Clean the throttle body (see THROTTLE BODY CLEANING ), then go to step 13. NO - Go to step 11. 11. Turn the ignition switch OFF. 12. Replace the throttle body (see THROTTLE BODY REMOVAL/INSTALLATION ). 13. Turn the ignition switch ON (II). 14. Reset the ECM/PCM with the HDS. 15. Do the ECM/PCM idle learn procedure (see ECM/PCM IDLE LEARN PROCEDURE ). 16. Turn the ignition switch OFF, and wait 10 seconds. 17. Turn the ignition switch ON (II). 18. Check for Temporary DTCs or DTCs in the DTCs MENU with the HDS. Are any Temporary DTCs or DTCs indicated? YES - If DTC P1683 is indicated, check for poor connections or loose terminals at the throttle body and NO - Troubleshooting is complete. DTC P1684: THROTTLE VALVE RETURN SPRING PERFORMANCE PROBLEM 1. Turn the ignition switch ON (II). 2. Clear the DTC with the HDS. 3. Start the engine. Hold the engine speed at 3,000 rpm with no load (in Park or neutral) until the radiator fan comes on, then let it idle. 4. Turn the ignition switch OFF, and wait 10 seconds. 5. Turn the ignition switch ON (II). 6. Check for Temporary DTCs or DTCs in the DTCs MENU with the HDS. Is DTC P1684 indicated? YES - Go to step 7. CAUTION: Do not insert your fingers into installed throttle body when you turn the ignition switch ON (II) or while the ignition switch is ON (II). Otherwise, you
2004 Acura TSX 2004 ENGINE PERFORMANCE Electronic Throttle Control System - TSX
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