Troubleshooting - B-CAN System Diagnosis Test Mode A

Multiplex Integrated Control System Troubleshooting - B-CAN System Diagnosis Test Mode A

Check the PCM for DTCs and troubleshooting PCM Initial Inspection and Diagnostic Overview or F-CAN loss of communication errors first, then do this diagnosis if the symptom is related to the B-CAN system.

1. Compare the symptom with this list of B-CAN related systems:

- Gauge control module
- Exterior lights
- Turn signals
- Entry light control
- Interior lights
- Safety indicators
- Rear window defogger
- HandsFreeLink
- Horns (security and panic)
- Beepers (key-in, seat belt, lights-on, low battery voltage, and parking brake)
- Power windows
- Power window/moonroof timer
- Wiper/washer
- Security
- Keyless entry
- Power door locks
- Climate control
- Key interlock
- Dashlights brightness
- Driving position memory system
- Power tailgate
- XM radio
- AcuraLink
- Immobilizer
- BSI system

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 HDS to the data link connector (A), then turn the ignition switch to ON (II).






3. From the BODY ELECTRICAL SYSTEM SELECT menu, select UNIT INFORMATION, and then select CONNECTED UNITS listed to see if the following control units are communicating with the HDS.

- MICU
- Gauge control module
- Combination switch control unit
- Relay control module
- Power seat control unit (HDS name: Memory seat control unit)
- HandsFreeLink control unit
- Driver's MPCS unit
- Rear MICU
- AcuraLink control unit (XM receiver) (HDS name: HIP (Honda Information Platform) Unit)
- Power tailgate control unit
- Climate control unit
- Immobilizer-keyless control unit
- BSI control unit

NOTE:

- If a unit is communicating with the HDS, DETECT will be displayed.
- If a unit is not communicating or the vehicle is not equipped, "Not Available" will be displayed.
- The HDS only checks the connected units status one time when BODY ELECTRICAL is selected. To recheck the status after repair, reboot the HDS and repeat step 3.

Are all control units communicating with the HDS?

YES -

Go to step 4.

NO -

If any of the control unit are not communicating, go to B-CAN System Diagnosis Test Mode B Troubleshooting - B-CAN System Diagnosis Test Mode B. If all units are not communicating or only the MICU is communicating, go to the DTC B1000 troubleshooting B1000.�

4. Select the system that has the problem from BODY ELECTRICAL SYSTEM SELECT menu, then select DTCs.

Are any DTCs indicated?

YES -

Go to step 5.

NO -

If the problem is related to one of the following items and the system that is malfunctioning does not stop or turn off, go to B-CAN System Diagnosis Test Mode C Troubleshooting - B-CAN System Diagnosis Test Mode C, if the problem is related to one of the following items and the system that is malfunctioning does not work or turn on, go to B-CAN System Diagnosis Test Mode D Troubleshooting - B-CAN System Diagnosis Test Mode D.

- Exterior lights
- Turn signals
- Entry light control
- Interior lights
- Horns (security and panic)
- Power windows
- Wiper/washer
- Power door locks

If the problem is related to one of the following items, go to the troubleshooting for that individual system.�

- Gauge control module
- Safety indicators
- Beepers (key-in, seat belt, lights-on, low battery voltage, and parking brake)
- Rear window defogger (climate control)
- Security
- Keyless entry
- Climate control
- Key interlock
- Dashlights brightness
- Audio system
- Navigation
- Driving position memory system
- HandsFreeLink
- Power tailgate
- Immobilizer
- BSI system

5. Record all DTCs, and troubleshoot them in this order:

- Battery voltage DTCs.
- Internal error DTCs.
- Loss of communication DTCs.
- Signal error DTCs.