Acura TSX / Honda Accord CL. Manual - part 950

Fig. 111: Measuring The Voltage Between Mainshaft Speed Sensor Connector Terminal No. 1 
& Body Ground 

13. Turn the ignition switch OFF.  

14. Disconnect PCM connector C (22P).  

15. Check for continuity between mainshaft speed sensor connector terminal No. 2 and body ground. 

 

2004 Acura TSX 

2004 AUTOMATIC TRANSMISSIONS Diagnosis - MCTA 5-Speed

  

 

Is there continuity? 

YES: Repair short to ground in the wire between PCM connector terminal C19 and 
mainshaft speed sensor, then go to step 30 .  

NO: Go to step 16.  

Fig. 112: Checking For Continuity Between Mainshaft Speed Sensor Connector Terminal No. 
2 & Body Ground 

 

2004 Acura TSX 

2004 AUTOMATIC TRANSMISSIONS Diagnosis - MCTA 5-Speed

  

 

16. Check for continuity between mainshaft speed sensor connector terminal No. 3 and body ground. 

Is there continuity? 

YES: Go to step 17.  

NO: Repair open in the wire between the mainshaft speed sensor connector and ground 
(G101), then go to step 30 .  

Fig. 113: Checking For Continuity Between Mainshaft Speed Sensor Connector Terminal No. 
3 & Body Ground 

17. Connect PCM connector C (22P).  

18. Turn the ignition switch ON (II).  

 

2004 Acura TSX 

2004 AUTOMATIC TRANSMISSIONS Diagnosis - MCTA 5-Speed

  

 

19. Measure the voltage between mainshaft speed sensor connector terminals No. 2 and No. 3. 

Is there about 5 V? 

YES: Go to step 20.  

NO: Go to step 29 .  

Fig. 114: Measuring The Voltage Between Mainshaft Speed Sensor Connector Terminals No. 
2 & No. 3 

20. Connect the mainshaft speed sensor connector.  

21. Measure the voltage between PCM connector terminals C19 and A8 or A9. 

Is the voltage 0 V or about 5 V? 

YES: Go to step 22.  

NO: Replace the mainshaft speed sensor (see MAINSHAFT SPEED SENSOR 

 

2004 Acura TSX 

2004 AUTOMATIC TRANSMISSIONS Diagnosis - MCTA 5-Speed