Troubleshooting - B-CAN System Diagnosis Test Mode B
Do this diagnosis if any of the control units are not communicating (Not Available is displayed in the HDS) as found by the B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).
- Using the HDS, select the system that has the symptom from the BODY ELECTRICAL menu.
- Select DTCs, and then check for loss of communication DTCs.
Are any loss of communication DTCs indicated?
YES -Go to step 3.
NO -Replace the MICU: replace the under-dash fuse/relay box (see REMOVAL AND INSTALLATION ).■
- Do the power, ground, and communication part of the input test for the unit(s) not communicating with the HDS.
COMMUNICATING UNIT REFERENCE CHART
| Unit not communicating |
|---|
| MICU (see MICU INPUT TEST ) |
| Door multiplex control unit (see DOOR MULTIPLEX CONTROL UNIT INPUT TEST ) |
| Gauge control module (see GAUGE CONTROL MODULE INPUT TEST ) |
| Relay control module (see RELAY CONTROL MODULE INPUT TEST ) |
| Combination switch control unit (see COMBINATION SWITCH CONTROL UNIT INPUT TEST ) |
| HVAC control unit (see HVAC CONTROL UNIT INPUTS AND OUTPUTS ) |
| Climate control unit (see CLIMATE CONTROL UNIT INPUTS AND OUTPUTS ) |
| HandsFreeLink control unit (see CONTROL UNIT INPUT TEST/REPLACEMENT ) |