Acura TSX / Honda Accord CL. Manual - part 627

Fig. 132: Measuring Voltage Between DLC Terminal No. 16 & Body Ground 

2. Measure voltage between DLC terminals No. 4 and No. 16. 

Is there battery voltage? 

YES: Go to step 3.  

NO: Repair open in the wire between DLC terminal No. 4 and body ground (G451). 

 

2004 Acura TSX 

2004 ENGINE PERFORMANCE PGM-FI System - TSX

  

 

Fig. 133: Measuring Voltage Between DLC Terminals No. 4 & No. 16 

3. Measure voltage between DLC terminals No. 5 and No. 16. 

Is there battery voltage? 

YES: Go to step 4.  

NO: Repair open in the wire between the ECM/PCM (E3) and DLC terminal No. 5. 

 

2004 Acura TSX 

2004 ENGINE PERFORMANCE PGM-FI System - TSX

  

 

Fig. 134: Measuring Voltage Between DLC Terminals No. 5 & No. 16 

4. Turn the ignition switch ON (II).  

5. Measure voltage between DLC terminals No. 5 and No. 7. 

Is there 8.5 V or more? 

YES: Go to step 11 .  

NO: Go to step 6.  

 

2004 Acura TSX 

2004 ENGINE PERFORMANCE PGM-FI System - TSX

  

 

Fig. 135: Measuring Voltage Between DLC Terminals No. 5 & No. 7 

6. Turn the ignition switch OFF.  

7. Jump the SCS line with the HDS.  

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

9. Check for continuity between DLC terminal No. 7 and body ground. 

Is there continuity? 

YES: Repair short to ground in the wire between DLC terminal No. 7 and the ECM/PCM 
(E23). After repairing the wire, check for a DTC with the HDS, then go to the indicated DTC 

 

2004 Acura TSX 

2004 ENGINE PERFORMANCE PGM-FI System - TSX