Acura TSX / Honda Accord CL. Manual - part 584

Fig. 7: Connecting MAP Sensor 3P Connector Terminals No. 2 & No. 3 With A Jumper Wire 

6. Turn the ignition switch ON (II).  

7. Check the MAP SENSOR in the DATA LIST with the HDS. 

Is about 160 kPa (1,197 mm Hg, 47.1 in. Hg), 4.49 V or more indicated? 

YES: Go to step 8.  

NO: Go to step 14 .  

 

2004 Acura TSX 

2004 ENGINE PERFORMANCE PGM-FI System - TSX

  

 

8. Remove the jumper wire.  

9. Measure voltage between MAP sensor 3P connector terminals No. 1 and No. 3. 

Is there about 5 V? 

YES: Go to step 10.  

NO: Repair open in the wire between the ECM/PCM (A24) and the MAP sensor, then go to 
step 16 .  

Fig. 8: Measuring Voltage Between MAP Sensor 3P Connector Terminals No. 1 & No. 3

 

2004 Acura TSX 

2004 ENGINE PERFORMANCE PGM-FI System - TSX

  

 

10. Turn the ignition switch OFF.  

11. Connect ECM/PCM connector terminals A30 and A24 with a jumper wire. 

Fig. 9: Connecting ECM/PCM Connector Terminals A30 & A24 With A Jumper Wire 

12. Turn the ignition switch ON (II).  

13. Check the MAP SENSOR in the DATA LIST with the HDS. 

Is about 160 kPa (1,197 mm Hg, 47.1 in. Hg), 4.49 V or more indicated? 

YES: Go to step 20 .  

NO: Repair open in the wire between the ECM/PCM (A30) and the MAP sensor, then go to 
step 16 .  

14. Turn the ignition switch OFF.  

15. Replace the MAP sensor (see MAP SENSOR REPLACEMENT ).  

16. Turn the ignition switch ON (II).  

17. Reset the ECM/PCM with the HDS.  

18. Do the ECM/PCM idle learn procedure (see ECM/PCM IDLE LEARN PROCEDURE ).  

19. Check for Temporary DTCs or DTCs in the DTCs MENU with the HDS. 

Are any Temporary DTCs or DTCs indicated?

 

2004 Acura TSX 

2004 ENGINE PERFORMANCE PGM-FI System - TSX

  

 

YES: If DTC P0108 is indicated, check for poor connections or loose terminals at the MAP 
sensor and the ECM/PCM, then go to step 1 . If any other Temporary DTCs or DTCs are 
indicated, go to the indicated DTC troubleshooting.  

NO: Troubleshooting is complete.  

20. 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 ).  

21. Check for Temporary DTCs or DTCs in the DTCs MENU with the HDS. 

Are any Temporary DTCs or DTCs indicated? 

YES: If DTC P0108 is indicated, check for poor connections or loose terminals at the MAP 
sensor and the ECM/PCM, then go to step 1 . If any other Temporary DTCs or DTCs are 
indicated, go to the indicated DTC troubleshooting.  

NO: If the ECM/PCM was updated, troubleshooting is complete. If the ECM/PCM was 
substituted, replace the original ECM/PCM (see HOW TO REMOVE THE ECM/PCM 
FOR TESTING ).  

DTC P1128: MAP SENSOR SIGNAL LOWER THAN EXPECTED 

1. Turn the ignition switch ON (II).  

2. Check the MAP SENSOR in the DATA LIST with the HDS. 

Is less than 54.1 kPa (406 mm Hg, 16.0 in. Hg) or 1.61 V held for more than 5 seconds? 

YES: Go to step 7 .  

NO: Go to step 3.  

3. Clear the DTC with the HDS.  

4. 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.  

5. 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  

6. Monitor the OBD STATUS for DTC P1128 in the DTCs MENU with the HDS. 

Does the screen indicate FAILED? 

YES: Go to step 7.  

NO: If the screen indicates PASSED, intermittent failure, system is OK at this time. If the 
screen indicates NOT COMPLETED, go to step 4 and recheck.  

7. Turn the ignition switch OFF.  

8. Replace the MAP sensor (see MAP SENSOR REPLACEMENT ).  

9. Turn the ignition switch ON (II).  

10. Reset the ECM/PCM with the HDS.  

11. Do the ECM/PCM idle learn procedure (see ECM/PCM IDLE LEARN PROCEDURE ).

 

2004 Acura TSX 

2004 ENGINE PERFORMANCE PGM-FI System - TSX