Using the HDS (Preferred method)

WARNING: This page is about a different car, the 2013 Acura MDX, 2012 Acura MDX, 2011 Acura MDX, and 2010 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.

Connect the HDS to the Data Link Connector (DLC).

NOTE: There are two ways to read B-CAN code with the HDS.

First method; On the HDS, first select BODY ELECTRICAL, then select the subsystem that relates to the problem (for example: door locks, keyless, security, etc.), and then last, select the DTCs.

Second method: Ground the SCS circuit with the HDS, then read the DTCs displayed in the multi-information display (MID) in the gauge control module, then go to B-CAN System Diagnosis Test Mode A

Using the B-CAN System Diagnosis Test Mode 1 (Use only if the HDS is unavailable)

Check for communication circuit problems using B-CAN System Diagnostic Test Mode 1 .
Check for DTCs.
If there are DTCs stored, sort them, and then troubleshoot the DTCs in this order.
1. Battery voltage DTCs
2. Internal error DTCs
3. Loss of communication DTCs
  NOTE: If DTC B1000 is stored, troubleshoot DTC B1000 first
4. Signal error DTCs
If no DTCs are retrieved, use B-CAN System Diagnostic Test Mode 2 to check all inputs related to the failure