Acura TSX / Honda Accord CL. Manual - part 626

 

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Acura TSX / Honda Accord CL. Manual - part 626

 

 

ECM/PCM.  

Fig. 128: Checking For Continuity Between ECM/PCM Connector Terminal A20 & Body 
Ground
 

79. Measure voltage between body ground and ECM/PCM connector terminal E5. 

Is there about 5 V? 

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.  

NO: Go to step 80.  

 

2004 Acura TSX 

2004 ENGINE PERFORMANCE PGM-FI System - TSX

  

 

Fig. 129: Measuring Voltage Between Body Ground & ECM/PCM Connector Terminal E5 

80. Turn the ignition switch OFF.  

81. Disconnect the FTP sensor 3P connector, and measure voltage between body ground and ECM/PCM 

connector terminal E5 with the ignition switch ON (II). 

Is there about 5 V? 

YES: Replace the FTP sensor (see FTP SENSOR REPLACEMENT ).  

NO: Go to step 82.  

 

2004 Acura TSX 

2004 ENGINE PERFORMANCE PGM-FI System - TSX

  

 

Fig. 130: Measuring Voltage Between Body Ground & ECM/PCM Connector Terminal E5 

82. Turn the ignition switch OFF.  

83. Jump the SCS line with the HDS.  

84. Disconnect the FTP sensor 3P connector.  

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

86. Check for continuity between ECM/PCM connector terminal E5 and body ground. 

Is there continuity? 

YES: Repair short in the wire between the ECM/PCM (E5) and FTP sensor.  

NO: 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 PGM-FI System - TSX

  

 

Fig. 131: Checking For Continuity Between ECM/PCM Connector Terminal E5 & Body 
Ground
 

DLC CIRCUIT TROUBLESHOOTING 

1. Measure voltage between DLC terminal No. 16 and body ground. 

Is there battery voltage? 

YES: Go to step 2.  

NO: Repair open in the wire between DLC terminal No. 16 and the No. 8 FI ECU (15A) fuse 
in the underhood fuse/relay box. 

NOTE:

z

If the ECM/PCM does not communicate with the HDS, do this 
troubleshooting procedure.  

z

Check that the MIL circuit is normal, then do this troubleshooting.  

 

2004 Acura TSX 

2004 ENGINE PERFORMANCE PGM-FI System - TSX

  

 

 

 

 

 

 

 

 

Content   ..  624  625  626  627   ..