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NOT COMPLETED, go to step 26 and recheck. 29. Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM (see HOW TO SUBSTITUTE THE ECM/PCM ). 30. Check for Temporary DTCs or DTCs in the DTCs MENU with the HDS. Are any Temporary DTCs or DTCs indicated? YES: If DTC P0141 is indicated, check for poor connections or loose terminals at the NO: If the ECM/PCM was updated, troubleshooting is complete. If the ECM/PCM was DTC P0171: FUEL SYSTEM TOO LEAN; DTC P0172: FUEL SYSTEM TOO RICH 1. Check the fuel pressure (see FUEL PRESSURE TEST ). Is the fuel pressure OK? YES: Check the engine valve clearances and adjust if necessary. If the valve clearances are NO: Check the fuel pressure (see FUEL PRESSURE TEST ). z If the pressure is too high, replace the fuel pressure regulator (see FUEL PRESSURE z If the pressure is too low, check the fuel pump and the fuel feed line, then go to step 2. 2. Turn the ignition switch ON (II). 3. Reset the ECM/PCM with the HDS. 4. Do the ECM/PCM idle learn procedure (see ECM/PCM IDLE LEARN PROCEDURE ). 5. 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. 6. Test-drive under the following conditions: NOTE: If some of the DTCs listed below are stored at the same time as DTC P0171 P0107, P0108, P1128, P1129: Manifold absolute pressure (MAP) sensor P0133, P1157, P2195, P2238, P2252, P2A00: Air fuel ratio (A/F) sensor P0134, P0135: Air fuel ratio (A/F) sensor (Sensor 1) heater P0137, P0138, P0139: Secondary HO2S (Sensor 2) P0141: Secondary HO2S (Sensor 2) heater P2646, P2647, P2648, P2649: VTEC system P2279: Intake air leakage
2004 Acura TSX 2004 ENGINE PERFORMANCE PGM-FI System - TSX
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