Acura TSX / Honda Accord CL. Manual - part 591

Fig. 19: Checking For Continuity Between A/F Sensor (Sensor 1) 4P Connector Terminal No. 
1 & A/F Sensor (Sensor 1) 4P Connector Terminals No. 3 & No. 4 

10. Jump the SCS line with the HDS.  

11. Disconnect ECM/PCM connector A (31P).  

12. Check for continuity between ECM/PCM connector terminals A10 and body ground. 

Is there continuity? 

YES: Repair short in the wire between the ECM/PCM (A10) and the A/F sensor (Sensor 1), 
then go to step 23 .  

NO: Go to step 13.  

 

2004 Acura TSX 

2004 ENGINE PERFORMANCE PGM-FI System - TSX

  

 

Fig. 20: Checking For Continuity Between ECM/PCM Connector Terminals A10 & Body 
Ground 

13. Connect the A/F sensor (Sensor 1) 4P connector terminal No. 3 to body ground with a jumper wire. 

 

2004 Acura TSX 

2004 ENGINE PERFORMANCE PGM-FI System - TSX

  

 

Fig. 21: Connecting The A/F Sensor (Sensor 1) 4P Connector Terminal No. 3 To Body Ground 
With A Jumper Wire 

14. Check for continuity between ECM/PCM connector terminal A10 and body ground. 

Is there continuity? 

YES: Go to step 15.  

NO: Repair open in the wire between the ECM/PCM (A10) and the A/F sensor (Sensor 1), 
then go to step 23 .  

 

2004 Acura TSX 

2004 ENGINE PERFORMANCE PGM-FI System - TSX

  

 

Fig. 22: Checking For Continuity Between ECM/PCM Connector Terminal A10 & Body 
Ground 

15. Connect A/F sensor (Sensor 1) 4P connector terminal No. 4 to body ground with a jumper wire. 

 

2004 Acura TSX 

2004 ENGINE PERFORMANCE PGM-FI System - TSX