How to Troubleshoot the Heating
How to Use the Self-diagnostic Function with the HDS
  1. Make sure the ignition switch is OFF.
  1. Connect the HDS to the data link connector (DLC).
  1. Turn the ignition switch ON (II).
  1. Make sure the HDS communicates with the vehicle and the heater control unit. If it doesn't, troubleshoot the DLC circuit.
  1. Select HVAC/CLIMATE CONTROL in the BODY ELECTRICAL menu.
  1. Select INSPECTION in the HVAC/CLIMATE CONTROL menu.
  1. Select CLIMATE CONTROL SELF TEST in the INSPECTION menu.
  1. 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.