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