Reading and Clearing Diagnostic Trouble Codes
General Troubleshooting InformationHow to Check for DTCs with the HDS
1. Make sure the ignition switch is in LOCK (0) position.
2. Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.
3. Turn the ignition switch to ON (II).
4. Make sure the HDS communicates with the vehicle and the climate control unit. If it doesn't, troubleshoot the DLC circuit.
5. Select HVAC/CLIMATE CONTROL in the BODY ELECTRICAL menu.
6. Select DTCs in the HVAC/CLIMATE CONTROL menu.
7. 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. Symptom Related Diagnostic Procedures
NOTE:
- After troubleshooting, clear the DTCs with the HDS.
- For specific operations, refer to the user's manual that came with the HDS.
How to Retrieve a DTC (Without HDS)
The climate control unit has a self-diagnostic function. To run the self-diagnostic function, do the following:
NOTE: Before troubleshooting the climate control system, refer to B-CAN System Diagnosis Test Mode A Troubleshooting - B-CAN System Diagnosis Test Mode A Troubleshooting.
1. Turn the ignition switch to ON (II).
2. Press and hold the OFF button. While holding the OFF button, press the recirculation button five times within 10 seconds. Release the OFF button and the self-diagnosis begins.
NOTE: The blower motor can be run at any speed regardless of what the panel is displaying.
If there is any problem in the system, the temperature indicator will light up the segment (A through S) corresponding to the error. The temperature indicator will then alternate every second between displaying "88" (all segments lit) and the error code segment (A through S). To determine the meaning of the DTC, refer to the DTC Troubleshooting Index. DTC List - Climate Control
If there are no problems detected, the segments will not illuminate.
Canceling the Self-diagnostic Function
3. Turn the ignition switch to LOCK (0) to cancel the self-diagnostic function. After completing repair work, run the self-diagnostic function again to make sure that there are no other malfunctions.
Checking DTCs by DTC Indicator
NOTE: Before troubleshooting the climate control system, refer to B-CAN System Diagnosis Test Mode A Troubleshooting - B-CAN System Diagnosis Test Mode A Troubleshooting.
To retrieve the DTC, you must run the self-diagnostic function. In the case of multiple problems, the respective indicator segments will come on. If indicator segments A, C, E, G, I, L, O and Q come on at the same time, there may be an open in the common ground wire.
