Acura TSX / Honda Accord CL. Manual - part 154

Fig. 41: Identifying Multiplex Integrated Control Unit Connector Terminals 

3. Inspect the connector and socket terminals to be sure they are all making good contact. 

z

If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.  

z

If the terminals look OK, go to step 4.  

4. With the connectors still disconnected from the under-hood fuse/relay box, make these input tests at the 

connector(s). See Fig. 42 . 

z

If any test indicates a problem, find and correct the cause, then recheck the system. 

 

2004 Acura TSX 

2004 ACCESSORIES & EQUIPMENT Multiplex Integrated Control System - TSX

  

 

z

If all the input tests prove okay, go to step 5.  

Fig. 42: Multiplex Integrated Control Unit Input Test Table 

5. Reconnect the connectors to the under-dash fuse/relay box, and make these input tests at the appropriate 

connectors on the under-dash fuse/relay box. See Fig. 43 . 

z

If any test indicates a problem, find and correct the cause, then recheck the system.  

z

If all the input tests prove OK, the multiplex integrated control unit must be faulty, replace the 
under-dash fuse/relay box assembly. 

 

2004 Acura TSX 

2004 ACCESSORIES & EQUIPMENT Multiplex Integrated Control System - TSX

  

 

Fig. 43: Identifying Under-Dash Fuse/Relay Box Input Tests 

GAUGE CONTROL MODULE INPUT TEST 

1. Remove the gauge control module (see GAUGE CONTROL MODULE REPLACEMENT ).  

2. Disconnect the 18P connector from the gauge control module.  

3. Inspect the connector and socket terminals to be sure they are all making good contact. 

z

If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.  

z

If the terminals look OK, go to step 4. 

 

2004 Acura TSX 

2004 ACCESSORIES & EQUIPMENT Multiplex Integrated Control System - TSX

  

 

Fig. 44: Identifying Gauge Control Module Connector Terminals 

4. With the connector still disconnected, make these input tests at the connector: 

z

If any test indicates a problem, find and correct the cause, then recheck the system.  

z

If all the input tests prove OK, replace the gauge control module.  

Fig. 45: Gauge Control Module Input Test Table

 

2004 Acura TSX 

2004 ACCESSORIES & EQUIPMENT Multiplex Integrated Control System - TSX