Acura TSX / Honda Accord CL. Manual - part 56

Fig. 8: Loss Of Communication DTC Cross-Reference Chart 

B-CAN SYSTEM SWITCH DEVICE INDEX 

Fig. 9: Combination Switch Control Unit Table 

Fig. 10: Relay Control Module Table 

 

2004 Acura TSX 

2004 ACCESSORIES & EQUIPMENT Multiplex Integrated Control System - TSX

  

 

Fig. 11: Door Multiplex Control Unit Table 

Fig. 12: Multiplex Integrated Control Unit Table 

Fig. 13: Gauge Control Module Table 

 

2004 Acura TSX 

2004 ACCESSORIES & EQUIPMENT Multiplex Integrated Control System - TSX

  

 

Fig. 14: Climate Control Unit Table 

TROUBLESHOOTING 

B-CAN SYSTEM DIAGNOSIS TEST MODE A 

1. Make sure the system is related to B-CAN: 

z

Gauge control module  

z

Exterior lights  

z

Turn signals  

z

Entry light control  

z

Interior lights  

z

Safety indicators  

z

Rear window defogger  

z

Horns (security and panic)  

z

Chimes (key, seatbelt and lights ON)  

z

Power windows  

z

Moonroof timer  

z

Wiper/washer  

z

Security  

z

Keyless entry  

z

Power door locks  

z

Climate control  

z

Key interlock  

z

Dash light brightness 

Is the symptom related to the B-CAN system? 

YES: Go to step 2. 

NOTE:

z

Perform this diagnosis first if the symptom is related to the B-CAN system. 

z

Always cycle the ignition switch within 3 seconds when prompted in the 
DTC troubleshooting procedures in this section.  

 

2004 Acura TSX 

2004 ACCESSORIES & EQUIPMENT Multiplex Integrated Control System - TSX

  

 

NO: Go to the system troubleshooting for the system with the symptom.  

2. Connect the Honda Diagnostic System (HDS).  

3. From BODY ELECTRICAL MENU, select connected units UNIT INFORMATION, and then select 

CONNECTED UNIT. 

z

MICU  

z

Door multiplex control unit  

z

Gauge control module  

z

Combination switch control unit  

z

Relay control module  

z

Climate control unit  

Are all control units communicating with the HDS? 

YES: Go to step 4.  

NO: If any of them are not communicating, go to B-CAN System Diagnosis Test Mode B. If 
all units are not communicating, go to DTC B1000 troubleshooting (see DTC B1000: 
COMMUNICATION BUS LINE ERROR ).  

4. Select the system that has the problem from the BODY ELECTRICAL MENU, then select DTCs. 

Are any DTCs indicated? 

YES: Go to step 5.  

NO: If the problem is related to one the following items, go to B-CAN System Diagnosis 
Test Mode C: 

z

Exterior lights  

z

Turn signals  

z

Entry light control  

z

Interior lights  

z

Rear window defogger (climate control)  

z

Horns (security and panic)  

z

Power windows  

z

Moonroof timer  

z

Wiper/washer  

z

Power door locks 

NOTE:

z

If the unit is communicating with the scan tool, DETECT will be 
displayed.  

z

If the unit is not communicating, "NOT AVAILABLE" will be 
displayed.  

NOTE:

In the problem is related to one of the following items, go 
to the troubleshooting for that individual system:

 

2004 Acura TSX 

2004 ACCESSORIES & EQUIPMENT Multiplex Integrated Control System - TSX