Acura TSX / Honda Accord CL. Manual - part 592

Fig. 23: Connecting A/F Sensor (Sensor 1) 4P Connector Terminal No. 4 To Body Ground With A 
Jumper Wire 

16. Remove the A/F sensor relay (A). 

 

2004 Acura TSX 

2004 ENGINE PERFORMANCE PGM-FI System - TSX

  

 

Fig. 24: Removing The A/F Sensor Relay 

17. Check for continuity between A/F sensor relay terminal No. 2 and body ground. 

Is there continuity? 

YES: Go to step 18.  

NO: Repair open in the wire between the A/F sensor (Sensor 1) and the A/F sensor relay, 
then go to step 23 .  

 

2004 Acura TSX 

2004 ENGINE PERFORMANCE PGM-FI System - TSX

  

 

Fig. 25: Checking For Continuity Between A/F Sensor Relay Terminal No. 2 & Body Ground 

18. Disconnect ECM/PCM connector E (31P).  

19. Check for continuity between ECM/PCM connector terminal E8 and the A/F sensor relay terminal No. 4. 

Is there continuity? 

YES: Go to step 20.  

NO: Repair open in the wire between the ECM/PCM (E8) and the A/F sensor relay, then go 
to step 22 .  

 

2004 Acura TSX 

2004 ENGINE PERFORMANCE PGM-FI System - TSX

  

 

Fig. 26: Checking For Continuity Between ECM/PCM Connector Terminal E8 & The A/F 
Sensor Relay Terminal No. 4 

20. Check the A/F sensor relay (see RELAYS ). 

Is the A/F sensor relay OK? 

YES: Go to step 27 .  

NO: Replace the A/F sensor relay, then go to step 22 .  

21. Replace the A/F sensor (Sensor 1) (see A/F SENSOR REPLACEMENT ).  

22. Turn the ignition switch ON (II).  

23. Reset the ECM/PCM with the HDS.  

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

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

Are any Temporary DTCs or DTCs indicated? 

YES: If DTC P0135 is indicated, check for poor connections or loose terminals at the A/F 
sensor (Sensor 1) 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: Go to step 26.  

26. Monitor the OBD STATUS for DTC P0135 in the DTCs MENU with the HDS. 

Does the screen indicate PASSED?

 

2004 Acura TSX 

2004 ENGINE PERFORMANCE PGM-FI System - TSX