B-CAN System Diagnosis Test Mode A

B-CAN System Diagnosis Test Mode A

NOTE:
- Perform this diagnosis first if the symptom is related to the B-CAN system.
- Always cycle the ignition switch within 3 seconds when prompted in the DTC troubleshooting procedures in this section.

1. Make sure the system is related to B-CAN.
- Gauge control module
- Exterior lights
- Turn signals
- Entry light control
- Interior lights
- Safety indicators
- Rear window defogger
- Horns (security and panic)
- Chimes (key, seatbelt and lights ON)
- Power windows
- Moonroof timer
- Wiper/washer
- Security
- Keyless entry
- Power door locks
- Climate control
- Key interlock
- Dash light brightness

Is the symptom related to the B-CAN system?

YES - Go to step 2.

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.
- MICU
- Door multiplex control unit
- Gauge control module
- Combination switch control unit
- Relay control module
- Climate control unit

NOTE:
- If the unit is communicating with the scan tool, DETECT will be displayed.
- If the unit is not communicating, "NOT AVAILABLE" will be displayed.

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.

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.
- Exterior lights
- Turn signals
- Entry light control
- Interior lights
- Rear window defogger (climate control)
- Horns (security and panic)
- Power windows
- Moonroof timer
- Wiper/washer
- Power door locks

NOTE: In the problem is related to one of the following items, go to the troubleshooting for that individual system.
- Gauge control module
- Safety indicators
- Chimes (key, seat belt and lights ON)
- Security
- Keyless entry
- Climate control
- Key interlock
- Dash light brightness
- Audio System
- Navigation

5. Record all DTCs and sort them by DTC type using the DTC troubleshooting Index. DTC List - Body Control System
6. Troubleshoot the DTC(s) in the following order:
- Battery voltage DTCs.
- Internal error DTCs.
- Loss of communicator DTCs. Begin troubleshooting with the lowest number first (Example: if DTC B1006 and B1058 are retrieved, begin by troubleshooting B1006).
- Signal error DTCs.