Acura TSX / Honda Accord CL. Manual - part 943

symptom/indication goes away with a known-good PCM, replace the original PCM. 

NO: Repair open in the wire between PCM connector terminals A8, A9 and ground (G101), 
or repair poor ground (G101), then go to step 49 .  

Fig. 89: Checking For Continuity Between PCM Connector Terminals A8 & Body Ground & 
Between A9 & Body Ground 

14. Shift to all positions other than R .  

15. Measure the voltage between PCM connector terminals D5 and A8 or A9. 

Is there about 5 V? 

YES: Go to step 20 .  

NO: Go to step 16.  

 

2004 Acura TSX 

2004 AUTOMATIC TRANSMISSIONS Diagnosis - MCTA 5-Speed

  

 

Fig. 90: Measuring The Voltage Between PCM Connector Terminals D5 & A8 Or A9 

16. Turn the ignition switch OFF.  

17. Jump the SCS line with the HDS.  

18. Disconnect PCM connector D (17P).  

19. Check for continuity between PCM connector terminal D5 and body ground. 

Is there continuity? 

YES: Repair short in the wire between PCM connector terminal D5 and the transmission 
range switch, then go to step 49 .  

NO: Update the PCM if it does not have the latest software, or substitute a known-good 
PCM (see PCM UPDATING & SUBSTITUTION FOR TESTING ), then recheck. If the 
symptom/indication goes away with a known-good PCM, replace the original PCM. 

 

2004 Acura TSX 

2004 AUTOMATIC TRANSMISSIONS Diagnosis - MCTA 5-Speed

  

 

Fig. 91: Checking For Continuity Between PCM Connector Terminal D5 & Body Ground 

20. Measure the voltage between PCM connector terminals C12 and A8 or A9. 

Is there about 5 V? 

YES: Go to step 25 .  

NO: Go to step 21.  

 

2004 Acura TSX 

2004 AUTOMATIC TRANSMISSIONS Diagnosis - MCTA 5-Speed

  

 

Fig. 92: Measuring The Voltage Between PCM Connector Terminals C12 & A8 Or A9 

21. Turn the ignition switch OFF.  

22. Jump the SCS line with the HDS.  

23. Disconnect PCM connector C (22P)  

24. Check for continuity between PCM connector terminal C12 and body ground. 

Is there continuity? 

YES: Repair short in the wire between PCM connector terminal C12 and the transmission 
range switch, then go to step 49 .  

NO: Update the PCM if it does not have the latest software, or substitute a known-good 
PCM (see PCM UPDATING & SUBSTITUTION FOR TESTING ), then recheck. If the 
symptom/indication goes away with a known-good PCM, replace the original PCM. 

 

2004 Acura TSX 

2004 AUTOMATIC TRANSMISSIONS Diagnosis - MCTA 5-Speed