How to Check for Diagnostic Trouble Codes (DTCs)

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.

When the SH-AWD control unit senses an abnormality in the input or output systems, the SH-AWD indicator in the gauge control module will usually come on, and the malfunction indicator lamp (MIL), the D indicator, and/or the ABS indicator may also come on.

NOTE: Check the vehicle battery condition and charging system before troubleshooting.

With the ignition switch in LOCK (0), connect the HDS to the DLC (A) behind the driver's dashboard lower cover.

Fig 1: Identifying Data Link Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Turn the ignition switch to ON (II). Make sure the HDS communicates with the vehicle and the SH-AWD control unit. If it does not, go to the DLC circuit troubleshooting (see DLC CIRCUIT TROUBLESHOOTING ). Follow the prompts on the HDS to display the DTC(s) on the screen. Check the DTC and the freeze data for all systems. After determining the DTC(s), refer to the DTC TROUBLESHOOTING .
NOTE: See the HDS help menu for specific instructions.
If there are fuel and emissions DTCs and other system DTCs at the same time, troubleshoot the fuel and emissions DTCs first, otherwise the SH-AWD DTC may return.
After recording the DTCs, clear all DTCs.
Test-drive the vehicle for several minutes in AWD mode, and check for DTCs. If the DTC returns, refer to the DTC TROUBLESHOOTING . If the DTC does not return, there was an intermittent problem within the circuit. Make sure all connectors and terminals in the circuit are tight.