Troubleshooting - B-CAN System Diagnosis Test Mode B

Do this diagnosis if any of the control units are not communicating (NOT AVAILABLE is displayed on the HDS) as found by the B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A  ).

1. Using the HDS, select the system that has the symptom from the BODY ELECTRICAL SYSTEM SELECT menu.
2. Select the DTCs, and then check for loss of communication DTCs.

   Are any loss of communication DTCs indicated? 

   YES  - Go to step 3.

   NO  - Faulty driver's MICU; replace the driver's under-dash fuse/relay box (see DRIVER'S UNDER-DASH FUSE/RELAY BOX (MICU) REMOVAL AND INSTALLATION ).

3. Do the power, ground, and communication part of the input test for the unit(s) not communicating with the HDS.

   Unit not communicating
   Driver's MICU (see MICU INPUT TEST  )
   Gauge control module (see GAUGE CONTROL MODULE INPUT TEST )
   Power control unit (see RF UNIT REPLACEMENT )
   Keyless access control unit (see CONTROL UNIT INPUT TEST )
   Remote slot control unit (see RF UNIT REPLACEMENT )
   Immobilizer-keyless control unit (see IMMOBILIZER-KEYLESS CONTROL UNIT INPUT TEST )
   Passenger's MICU (see DTC U1283: DRIVER'S MICU LOST COMMUNICATION WITH PASSENGER'S MICU  )
   Door multiplex control unit (see POWER WINDOW MASTER SWITCH INPUT TEST )
   Climate control unit (see CLIMATE CONTROL POWER AND GROUND CIRCUIT TROUBLESHOOTING )
   Audio-navigation unit (see NAVIGATION UNIT CONNECTOR FOR INPUTS AND OUTPUTS )
   Power seat control unit (see POWER SEAT CONTROL UNIT INPUT TEST/REPLACEMENT )
   AcuraLink control unit (see ACURALINK CONTROL UNIT (XM RECEIVER) CONNECTOR FOR INPUTS AND OUTPUTS )
   HandsFreeLink control unit (see CONTROL UNIT INPUT TEST )
   BSI control unit (see BLIND SPOT INFORMATION SYSTEM (BSI) CONTROL UNIT INPUTS AND OUTPUTS )