How to Use the Self-Diagnostic Function With the HDS

Make sure the ignition switch is in LOCK (0).
Connect the HDS to the data link connector (DLC).
Turn the ignition switch to ON (II).
Make sure the HDS communicates with the vehicle and the climate control unit. If it does not, troubleshoot the DLC circuit (see DLC CIRCUIT TROUBLESHOOTING ).
Select HVAC/CLIMATE CONTROL in the BODY ELECTRICAL menu.
Select INSPECTION in the HVAC/CLIMATE CONTROL menu.
Select CLIMATE CONTROL SELF TEST in the INSPECTION menu.
Check for DTCs. If any DTCs are indicated, write down the DTCs, then go to the INDICATED DTC TROUBLESHOOTING .
NOTE:
- After troubleshooting, clear the DTCs with the HDS.
- For specific operations, refer to the user's manual that came with the HDS.