( TL19E00K73700000000BBAT10 )

How to Troubleshoot the Heating

How to Check for DTCs with the HDS

1. Make sure the ignition switch to LOCK (0).

1. Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.

1. Turn the ignition switch to ON (II).

1. Make sure the HDS communicates with the vehicle and the climate control unit. If it doesn't, troubleshoot the DLC circuit, R20A3 engine model, or K24Z3 engine model.

1. Select HVAC/CLIMATE CONTROL in the BODY ELECTRICAL menu.

1. Select DTCs in the HVAC/CLIMATE CONTROL menu.

1. Check for DTCs. If any DTCs are indicated, write down the DTCs, then go to the indicated DTC troubleshooting. If no DTCs are indicated, refer to symptom troubleshooting.
   NOTE:
   - After troubleshooting, clear the DTCs with the HDS.
   - For specific operations, refer to the user's manual that came with the HDS.