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12. 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. 13. Test-drive under the following conditions: z Engine coolant temperature more than 158°F (70°C) z Engine speed between 1,400 and 6,500 RPM z A/T in D position (M/T in 3rd gear) z Vehicle speed accelerated from 16 MPH (25 km/h) to 31 MPH (50 km/h) under half throttle 14. Check for Temporary DTCs or DTCs in the DTCs MENU with the HDS. Are any Temporary DTCs or DTCs indicated? YES: If DTC P1128 is indicated, check for poor connections or loose terminals at the MAP NO: Go to step 15. 15. Monitor the OBD STATUS for DTC P1128 in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES: Troubleshooting is complete. NO: If the screen indicates FAILED, check for poor connections or loose terminals at the DTC P1129: MAP SENSOR SIGNAL HIGHER THAN EXPECTED 1. Check for vacuum leaks in these parts: z PCV valve z PCV hose z EVAP canister purge valve z Throttle body z Brake booster hose Are the parts OK? YES: Go to step 2. NO: Repair or replace leaking parts, then go to step 9 . 2. 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. 3. Check the MAP SENSOR in the DATA LIST with the HDS. Is more than 36.9 kPa (277 mm Hg, 11.0 in. Hg) or 1.1 V held for more than for 5 seconds? YES: Go to step 7 . NO: Go to step 4. 4. Clear the DTC with the HDS. 5. Test-drive under the following conditions: z Engine coolant temperature more than 158°F (70°C)
2004 Acura TSX 2004 ENGINE PERFORMANCE PGM-FI System - TSX
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