Initial Inspection and Diagnostic Overview
General Troubleshooting InformationHow to Check for DTCs with the HDS
1. Make sure the ignition switch is OFF.
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 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 Use the Self-diagnostic Function with the HDS
1. Make sure the ignition switch is OFF.
2. Connect the HDS to the data link connector (DLC).
3. Turn the ignition switch 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 INSPECTION in the HVAC/CLIMATE CONTROL menu.
7. Select CLIMATE CONTROL SELF TEST in the INSPECTION menu.
8. 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.
How to Use the Self-diagnostic Function 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. Troubleshooting - B-CAN System Diagnosis Test Mode A
1. Turn the ignition switch OFF and then ON (II).
2. Press and hold the OFF button, then press the rear window defogger button five times within 10 seconds. Release the buttons. All the LEDs blink for 2 seconds, then the self-diagnostic function begins.
NOTE: The blower motor will run at various speeds when in the self-diagnostic mode.
Set the Navigation System Diagnostic Mode
3. Turn the ignition switch ON (II). Use the navigation display hard buttons as described below:
- Make sure the battery is connected, then press and hold the three buttons (Menu, Map/Guide, and Cancel), and keep them pressed for approximately 5 seconds. The display screen will go directly to the "Select Diagnosis Items" menu shown below.
- Touch the Unit Check button, then touch the Aircon button.
- If there is any problem in the system, the display panel will indicate it. To determine the meaning of the indication, refer to the table that follows.
- If there are no problems detected, the display panel will be blank.
Canceling the Self-diagnostic Function
4. Turn the ignition switch OFF 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 for DTCs
NOTE: In the case of multiple problems, the display panel will indicate them all. If the navigation display indicates TR sensor open, TMA sensor open, TS sensor open, TE sensor open, DrVENT sensor open, PaVENT sensor open, and PRE sensor open at the same time, there may be an open in the common ground wire.