Acura TSX / Honda Accord CL. Manual — part 574

Fig. 8: Connecting PSP Switch 2P Connector Terminals No. 1 And No. 2 With A Jumper Wire

15. Check the PSPSW in the DATA LIST with the HDS.

Does it change to OFF?

YES -Replace the PSP switch.

NO -Go to step 16.

16. Turn the ignition switch OFF.

17. Remove the jumper wire from the PSP switch 2P connector.

18. Jump the SCS line with the HDS.

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

2004 Acura TSX

2004 ENGINE PERFORMANCE Idle Control System - TSX

20. Connect PSP switch 2P connector terminal No. 1 to body ground with a jumper wire.

Fig. 9: Connecting PSP Switch 2P Connector Terminal No. 1 To Body Ground With A Jumper
Wire

21. Check for continuity between body ground and ECM/PCM connector terminal E16.

2004 Acura TSX

2004 ENGINE PERFORMANCE Idle Control System - TSX

Fig. 10: Checking For Continuity Between Body Ground And ECM/PCM Connector Terminal E16

Is there continuity?

YES -Go to step 22.

NO -Repair open in the wire between the PSP switch and ECM/PCM (E16).

22. Check for continuity between PSP switch 2P connector terminal No. 2 and body ground.

2004 Acura TSX

2004 ENGINE PERFORMANCE Idle Control System - TSX

Fig. 11: Checking For Continuity Between PSP Switch 2P Connector Terminal No. 2 And Body
Ground

Is there continuity?

YES -Update the ECM/PCM if it does not have the latest software, or substitute a known-good
ECM/PCM, then recheck (see HOW TO SUBSTITUTE THE ECM/PCM ). If the symptom/indication
goes away with a known-good ECM/PCM, replace the original ECM/PCM.

2004 Acura TSX

2004 ENGINE PERFORMANCE Idle Control System - TSX