Troubleshooting - B-CAN System Diagnosis Test Mode B
WARNING: This page is about a different car, the 2011 Acura TL, 2010 Acura TL, and 2009 Acura TL. However, it is still accessible from the selected car via links, so may be relevant.
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
- Do the power, ground, and communication part of the input test for the unit(s) not communicating with the HDS
Are any loss of communication DTCs indicated?
YES -Go to step 3
NO -Replace the driver's MICU
COMMUNICATION CHART
| Unit not communicating |
|---|
| Driver's MICU (see MICU INPUT TEST ) |
| Gauge control module (see GAUGE CONTROL MODULE INPUT TEST ) |
| Power control unit (see POWER CONTROL UNIT ) |
| Keyless access control unit (see CONTROL UNIT INPUT TEST ) |
| Remote slot control unit (see REMOTE SLOT CONTROL UNIT ) |
| Immobilizer-keyless control unit (see IMMOBILIZER-KEYLESS CONTROL UNIT INPUT TEST ) |
| Passenger's MICU (see 7 under 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 INPUTS AND OUTPUTS ) |
| Audio unit (see AUDIO 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 ) |